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Complications of burns. Consequences of thermal, chemical burns and frostbite

The consequences of burns vary significantly depending on the nature and extent of the injury. A person can receive chemical, thermal, radiation, and electrical injuries of various levels.

Most frequent complications burns are phenomena such as hypovolemia and infectious infections. They occur with a large affected area, which is more than 35% of the total body surface.

The first symptom leads to decreased blood supply, sometimes to the appearance of a state of shock and the formation of spasms. This is a consequence of vascular damage, dehydration, and bleeding.

The infectious consequences of burns are very dangerous, because they can cause sepsis. In the first few days, gram-negative bacteria, streptococci, staphylococci most often develop; each type is a favorable environment for the growth of pathogenic microflora.

Consequences of injury depending on severity

Any injury has its own characteristics of manifestation, symptoms and possible complications of burns.

I degree

Such a wound is often caused by prolonged exposure to the scorching sun or careless handling of boiling water or steam.

This type is characterized by minor injuries, damage to the surface layer occurs, a burning sensation and dryness are felt.

In this case, after the burn, pronounced hyperemia occurs, accompanied by swelling of the skin, pain, and redness. With such a wound, complications are practically excluded, superficial damage goes away quite quickly, with proper and timely treatment.

II degree

This type is not considered very serious, but nevertheless affects the upper two layers of the epidermis. Level II burns may cause blisters to form on the skin filled with clear liquid. The injury is accompanied by swelling, red pigmentation, and hyperemia.

In this case, the victim feels a sharp pain and burning sensation. When more than 50% of the body is affected, the effects of burns are potentially life-threatening. If it affects the face, hands, groin area, or blisters appear, you should consult a doctor.

III degree

These thermal injuries are classified into two main types:

  • “3A” - necrosis of soft tissues develops up to the papillary layer of the epidermis.
  • “3B” - complete necrosis over the entire thickness of the skin.

These are deep injuries in which nerves and muscles die, fatty layers are affected and bone tissue is affected.

Violations of the integrity of the skin have such consequences of burns as sharp pain, the injured area becomes whitish, darkens, and chars.

The surface of the epidermis is dry, with exfoliated areas, the line of limitation of dead tissue is clearly visible already on the 8-9th day.

In this case, a large amount of fluid is released, therefore, the victim experiences dehydration. After a burn, complications can be prevented with competent drug therapy formulated by the attending physician, and you also need to drink plenty of fluids to prevent negative consequences.

Regardless of the quality of therapy, after healing of burn wounds, scars and scars remain on the affected area.

IV degree

Most severe injury deep layers, which is invariably accompanied by necrosis of the skin and underlying soft tissues. The lesion is characterized by complete death of the burned areas, charring, and leads to the formation of a dry scab. To prevent complications of burns and sepsis, the wound is cleaned and dead tissue is removed.

If the injury covers more than 70-80% of the skin, complications from burns can be fatal.

In case of incorrect or untimely therapy, in severe cases The following consequences may occur:

  • Severe dehydration.
  • Rapid breathing.
  • Dizziness, fainting.
  • Infection of deep lesions.
  • Injuries internal organs.
  • Amputation.
  • Death.

Visually it is very difficult to determine burn lesions and their degree, especially in the first hours. To warn serious consequences burns, such injuries require urgent consultation with a doctor who will prescribe effective method treatment.

At initial examination In burn patients, serious complications of burns, for example, inhalation injuries, may not be clearly visible. Therefore, if there is a history of indications of the possibility (according to the mechanism of injury) of a burn to the respiratory tract, one should be extremely careful when examining the patient. In the first 48 hours after a burn, hyponatremia often occurs, due in part to increased secretion of antidiuretic hormone (ADH) and hypotonic fluid. With extensive deep burns, especially circular ones, one should remember about the possibility of developing compartment syndrome. Doppler pulsometry is of relative value in this case, since pronounced compartment syndrome can exist quite long time before it starts to fade arterial pulse. Almost all circular burns require eschar incisions. However, indications for fasciotomy are rare, other than electrical burns. Circumferential chest burns may also require incision of the eschar to improve respiratory mechanics, especially in young children. Of great importance for the prevention of complications is the early start of tube feeding, which helps maintain normal pH in the stomach and prevent bleeding from the stomach. upper sections Gastrointestinal tract.

In more late dates, 7-10 days after the burn, the most serious complication of the burn can be sepsis, the source of which is, as a rule, the burn wound. Severe inhalation injury and sepsis are a particularly unfavorable combination, usually leading to multiorgan failure and death. One often overlooked source of sepsis may be septic thrombophlebitis. developing in 4-5% of patients with extensive burns. Without treatment, the mortality rate for this complication approaches 100%. If septic thrombophlebitis is suspected, it is necessary to carefully examine all places where venous catheters were previously located. Aspiration of contents from these areas, unfortunately, does not help in making a diagnosis. If there is the slightest discharge in the area where the catheter is located, the vein should be opened, preferably with the use of anesthesia. If pus is obtained, the entire vein should be removed and the wound left open. In septic burn patients, it is also necessary to remember the possibility of developing sepsis associated with the constant presence of catheterization lines in the veins. Renal failure may complicate a burn as a consequence of resuscitation, inadequate measures, sepsis or toxic effects of myoglobin or medicines. Hypertension is a problem encountered in burns almost exclusively in childhood. It can occur immediately after a burn or after a significant period of time (up to 3 months) after complete closure of the wounds. The cause of this complication appears to be increased secretion of renin. Treatment is with furosemide (Lasix) and hydralazine (Apressin). Hypertension can be quite severe and sometimes, if untreated, leads to neurological disorders.

Once the wounds are closed, a problem can arise that is quite serious, namely, patients often scratch themselves so furiously that they tear apart donor sites and areas where grafts have been transplanted that have already healed. Unfortunately, there are no reliable effective means against itching from burns. Diphenhydramine and hydroxyzine (atarax) in combination with moisturizing creams and the use of pressure clothing may help to some extent. Children are prone to developing severe hypertrophic scars. The use of special pressure clothing and strict implementation of the rehabilitation program can to some extent prevent this complication.

An equally serious complication of burns is heterotopic calcification, which can be associated with overdoing it, which sometimes leads to hemorrhages in soft fabrics followed by calcification of hematomas. There are even reports in the literature about the development of malignancy of burn scars very late after injury. This complication of burns, as a rule, occurs in cases where the wounds, having closed during the healing process, reopen repeatedly or heal very poorly, slowly and for a long time.

The article was prepared and edited by: surgeon

CONSEQUENCES OF THERMAL, CHEMICAL BURNS AND FROSTBITE.

Burns. like frostbite, they are dangerous due to the development of shock, damage to the skin, central nervous, cardiovascular systems, respiratory organs, if acid or alkali is ingested - damage to the digestive tract (oral mucosa, esophagus, stomach), changes in kidney function, impaired water-salt metabolism, development of coma. With IV degree burns or frostbite, necrosis (death of tissue) occurs down to the bones. The percentage of deaths is high with IV degree burns and frostbite. With burns, the development of burn disease is possible. During its course, 4 periods are distinguished: burn shock, acute burn toxemia, septicotoxemia, convalescence.

Burn shock develops 1-2 hours after the burn and lasts 2 days: blood pressure decreases, anuria develops, and the general condition is severe. Shock occurs with first degree burns of more than 30% of the body surface and with II-IV degree burns - more than 10%.

Acute burn toxemia develops after shock and is characterized by high fever, loss of appetite, weak rapid pulse, and slow healing of burn wounds. Lasts 4-12 days. Fever can last for months (40° and above). Complications develop: pneumonia, arthritis, sepsis, anemia, intestinal atony, bedsores.

Septicopyemia develops with suppuration of burn wounds, which leads to burn exhaustion. A remitting fever is noted. Appetite disappears, anemia increases, disturbances in water-salt, electrolyte balance, and metabolism intensify. Bacteremia and dysproteinemia develop. Antibodies accumulate in the blood of a burned person, phagocytosis increases, and granulations form. Patients continue to lose weight. Wounds do not heal for a long time; a large amount of Pseudomonas aeruginosa, putrefactive integument, and Proteus are observed in the wound. Large loss of protein, prolonged intoxication, burn exhaustion, bedsores lead to muscle atrophy and stiffness in the joints. Death occurs as a result of the development of sepsis against the background of anemia, severe disorders of all types of metabolism, especially protein.
The period of convalescence begins gradually in the case of healing of burn wounds and lasts for many years. Often accompanied by amyloidosis of internal organs, chronic course nephritis, which requires systematic ongoing treatment.

Chemical burns can occur when taking alkalis and acids. Deep damage to the tissues of the digestive tract and respiratory tract develops. Burns of the oral cavity always occur, manifested by drooling. In 30-40% of people who take alkali, burns of the esophagus occur, followed by the development of esophageal stricture, stomach damage, complicated by perforation (if liquid alkaline bleaches get inside). When the upper respiratory tract is affected, obstruction and stridor develop, requiring emergency assistance.

In acid poisoning, tissue damage is not as deep as in alkali poisoning. Characterized by more frequent damage to the stomach than the esophagus, since the epithelium of the esophagus is resistant to acids.

Consequences of thermal and chemical frostbite.

With frostbite of the third degree, death of the skin, subcutaneous tissues and muscles occurs, with the fourth degree - tendons and bones.

With severe hypothermia, coma develops. Disappears at 18 °C and below electrical activity on the electroencephalogram. If such patients survive, then central pectin myelinolysis sometimes develops. In case of defeat of cardio-vascular system Bradycardia and decreased blood pressure progress if the temperature drops below 29 °C or lower. At 22 °C, ventricular fibrillation develops, and at 18 °C and below, asystole occurs. Damage to the respiratory organs with a decrease in body temperature is characterized by a progressive decrease in tidal volume and respiratory rate. Changes in kidney function occur: cold diuresis and impaired concentration function of the tubules develop.

In the long term, consequences such as severe cicatricial deformities of the trunk and limbs, joint contractures, defective stumps, trophic ulcers, and terminal osteomyelitis, requiring surgical and orthopedic treatment, may develop.

CONSEQUENCES OF THERMAL AND CHEMICAL BURNS OF THE HEAD AND NECK.

With deep burns of the calvarium with bone damage, there is a risk of developing epi- and subdural abscesses, since they are often asymptomatic. Also, with such burns, meningitis may develop. As a result of deep burns of the skin and underlying tissues, there is often incomplete restoration of the lost skin, which leads to the development of burn deformities.

Burns ears III degrees are often complicated by the development of chondrites. It is possible to develop a burn to the oral cavity, esophagus, and stomach. Deep burns to the head and neck can result in rapid death.
With frostbite of the head and neck, infectious complications are often observed (in the II degree), and the development of a wound infection is possible (in the III and IV degrees).

From the festering lymph nodes abscesses and adenophlegmons are formed. Local suppurative processes occur with purulent-resorptive fever, which, with a long process, leads to wound exhaustion. At the site of scars, the development of squamous cell carcinoma and fungal skin lesions is possible.

Changes in the nerves, blood vessels and lymphatic vessels(for example, neuritis facial nerve, lymphangitis, thrombophlebitis, etc.).

CONSEQUENCES OF THERMAL AND CHEMICAL BURNS AND FROSTBOST OF THE UPPER LIMB

With burns of the upper limb, contractures often develop (this is a burn deformity as a result of deep burns of the skin and underlying tissues). The development of ankylosis, dislocations, subluxations, as well as long-term trophic ulcers. In case of burns with acids, tissue death occurs according to the type of dry necrosis, in case of burns with alkalis - wet necrosis. Local complications include purulent arthritis, furunculosis, and in case of circular burns - gangrene of the limb.

With frostbite of the upper limb, ischemia of the limbs may develop as a result of damage to nerves, blood and lymphatic vessels. With the development of cold neurovasculitis, the pulsation of blood vessels in the limbs sharply weakens, the hands swell, sweating increases, and the hands become wet. Tactile sensitivity changes in the area of ​​the hands; patients cannot confidently grasp objects or perform precise movements.

In connection with neurovascular disorders, trophic changes in the tissues of the limb develop with the formation of skin ulcers, “sucked fingers,” and clubbed fingers. Squamous cell carcinoma may develop in place of scars after frostbite.

When the demarcation line passes through the bone, inflammation can develop in the form of progressive osteomyelitis, and when passing through the joint - progressive purulent osteoarthritis.

In degrees III and IV frostbite may develop wound infection(purulent, putrefactive, anaerobic), which can be accompanied by lymphangitis, lymphadenitis, thrombophlebitis, purulent phlebitis.

CONSEQUENCES OF THERMAL AND CHEMICAL BURNS OF THE LOWER LIMB.

Most often, contractures (burn deformities) occur after a burn due to deep damage to the skin and underlying tissues. Subluxations, dislocations and ankylosis, as well as long-term trophic ulcers, are less common.

Locally in the burn area, purulent arthritis, phlegmon, furunculosis develop, and with circular burns - gangrene of the limb.
Frostbite of the legs, complicated by cold neurovasculitis, is often the cause of obliterating endarteritis. With the development of cold neurovasculitis, the pulsation of blood vessels in the extremities sharply weakens, the legs swell, sweating increases and the extremities become wet. Patients experience a feeling of expansion, compression, and burning in the extremities.

In the area of ​​the feet, tactile sensitivity changes, patients cannot perform precise movements, lose the feeling of the foot when walking, and if increased tactile sensitivity develops after frostbite, then touching, squeezing, and wearing shoes are accompanied by pain.

Due to changes in blood vessels and nerves, dermatoses and trophic changes in the tissues of the extremities develop with the formation of clubbed fingers, “sucked fingers,” and skin ulcers. Sometimes squamous cell carcinoma develops in place of scars after frostbite.

With III and IV degrees of frostbite, any wound infection can develop: putrefactive, purulent, anaerobic, accompanied by purulent phlebitis, thrombophlebitis, lymphadenitis, lymphangitis, adenophlegmons and abscesses are formed from suppurating lymph nodes. If the demarcation line passes through the bone, then inflammation develops in the form of progressive osteomyelitis, while passing through the joint - purulent progressive osteoarthritis.

CONSEQUENCES OF THERMAL AND CHEMICAL BURNS OF THE TORSO. For extensive burns, the main complication is burn disease.

Thus, during periods of toxemia and septicotoxemia, lobar, focal or lobar pneumonia due to damage to the respiratory system by combustion products. Occasionally, myocardial infarction develops, and in the period of septicotoxemia - pericarditis.

Often develop acute ulcers gastrointestinal tract(peptic ulcer), accompanied by bleeding or perforation. Sometimes gangrenous or acalculous cholecystitis develops. Other complications may also develop, such as acute pancreatitis, acute intestinal obstruction, and thrombosis of abdominal vessels.

With severe burn intoxication, bilirubinemia, increased bleeding of granulations, and sometimes acholia of feces can be observed, which indicates the development of liver failure, serum or toxic hepatitis with a predominance of anicteric forms.

The most severe complication burn disease - sepsis.

In the later stages after a burn, pyelonephritis, pyelitis, and nephritis can develop.

With burn exhaustion (a complication of the period of burn septicotoxemia), the development of mono- and polyneuritis and urinary stones is possible.

In the area of ​​thermal damage, the development of furunculosis, phlegmon, and anaerobic infection is possible.

Burns caused by acids and alkalis cause damage to the oral mucosa, esophagus, and intestines. In case of burns with acids, the state of cell colloids changes, dehydration and coagulation of tissues are observed, and their death occurs as a type of dry necrosis. Alkalies, interacting with proteins, form alkaline albuminates, saponify fats, and wet necrosis develops.

With frostbite, widespread local suppurative processes occur with purulent-resorptive fever, and therefore, with prolonged suppuration, wound exhaustion can develop.

In severe forms of frostbite, changes in internal organs are also observed: inflammatory diseases respiratory tract, gums (stomatitis, etc.), stomach, duodenum, colon; fungal infections of the skin and nails and arthrosis may develop.

Burns- this is damage to body tissues that occurs as a result of local exposure to high temperature, as well as various chemicals, electric current or ionizing radiation.

What is a burn and their classification:

There is still no unified international classification of burns. The most important prognostic indicator of burns is the depth of tissue damage. At different times, different classifications of burns were proposed depending on the depth of damage: Boyer (1814) developed a three-stage classification; Kreibich (1927) proposed to distinguish five degrees of burns.

IN Russian Federation Since 1960, a four-stage classification has been adopted, according to which, depending on the depth of tissue damage, first-degree burns are distinguished, characterized by redness and swelling of the skin; second degree burns, in which blisters filled with a clear, yellowish liquid form on the affected areas of the skin; III degree burns, which are divided into two groups (IIIa degree burns (dermal) are characterized by damage to the skin itself, in which there is partial necrosis of the skin with preservation of elements of the dermis, i.e.
e. the skin is not affected to its full depth; in case of IIIb degree burns, skin necrosis extends to its entire thickness, and the subcutaneous fat layer is also partially or completely affected with the formation of a necrotic scab); IV degree burns, characterized by necrosis not only of the skin, but also of underlying tissues - muscles, bones, tendons, joints.

Based on the characteristics of treatment, burns are divided into two groups: burns of I, II and II-Ia degrees are classified as superficial, and burns of IIIb and IV degrees are deep. In case of superficial burns, only the upper layers of the skin die, and restoration of the skin in these cases occurs independently, due to the preserved elements of the skin; Treatment of superficial burns is conservative. Deep burns (IIIb and IV degrees) usually require surgical treatment.
IN clinical practice As a rule, victims have a combination of burns of various degrees.

Causes of burns:

Depending on the causes, thermal, chemical, electrical and radiation burns are distinguished. Depending on the circumstances in which the thermal injury occurred, burns are divided into industrial, household and wartime burns. According to the severity of the lesion, they distinguish between lungs, moderate severity, severe and extremely severe burns.

A thermal burn occurs as a result of flame, hot steam, hot metals, burning gases or liquids, radiant energy, or direct contact with a heated object or hot liquid. At thermal burns Most often, the superficial tissues of the body are affected, but damage to the respiratory tract is often noted.

In case of fires, in addition to burns, poisoning may occur from products of incomplete combustion (usually carbon monoxide) or other toxic substances (for example, when burning synthetic materials).

Signs of a burn depending on the degree:

In the initial period of a burn, local changes are clinically manifested by serous or serous-hemorrhagic inflammation (burn dermatitis), the outcome of which depends on the area and depth of the lesion and the nature of the damaging factor.
The course of a burn wound depends primarily on the depth of the lesion.

Burns of the 1st and 2nd degrees proceed as serous inflammation, suppuration is usually not observed, after the end of the inflammation, complete regeneration (recovery) and healing of the burn wound are observed quite quickly. For third and fourth degree burns, following processes: tissue necrosis at the time of burn, traumatic swelling, inflammation purulent in nature, gradual cleansing of the burn wound from dead tissue, the formation of granulations, epithelization and scarring.

Moreover, if the epithelial cover in case of IIIa degree burns is restored due to the preserved skin elements, then in case of deep (IIIb and IV degrees) burns, incomplete regeneration is noted due to the death of skin appendages, and healing of the burn wound in these cases occurs due to marginal epithelization and scarring.

In addition to local changes, burns cause a complex of systemic disturbances in the functioning of the body. Burns can occur primarily as a local lesion or in the form of a burn disease. With superficial injuries in adults, occupying up to 10-12% of the body surface, or with deep injuries of 5-6% of the body surface, the course of burns is usually limited to local symptoms.

With more common burns, multiple disturbances in the functioning of organs and systems are observed, the totality of which is commonly called burn disease. In children, elderly and senile people, burn disease can also develop with less severe lesions. Severe burn disease in adults develops with superficial thermal lesions occupying more than 25-30% of the body surface and more than 10% with deep burns. The severity of the burn disease, its outcome, as well as the frequency of complications are determined, first of all, by the area of ​​deep damage.

The course of burn disease is divided into four periods: burn shock, acute burn toxemia, burn septicotoxemia, and recovery period.

Burn shock develops primarily as a result of pain impulses from the wound and thermal damage to the skin and underlying tissues. Acute burn toxemia develops as a result of intoxication of the body with protein breakdown products absorbed from burned tissues. During the period of septicotoxemia, the leading pathogenetic factor determining clinical symptoms is the resorption of tissue decay products and the vital activity of microorganisms.

The depth of burns largely depends on the nature of the thermal agent. When clothing catches fire, deep burns most often develop. At the same time, the instantaneous effect of even very high temperatures can be limited to superficial damage, which is observed during the outbreak of fuel vapors (gasoline, gas). Hot water and steam in adults more often cause superficial burns.

It is difficult to predict the depth of the burn when injured by hot viscous liquids - plastics or bitumen. Clothing generally protects against burns, however, for example, woolen fabric soaked in hot liquid prolongs the time of thermal exposure and increases the depth of damage; artificial fabrics (such as nylon or nylon) melt when burned and cause deep burns. Thus, the depth of the burn injury depends not only on the duration of thermal exposure, but also on the type of clothing.

In addition to the depth of the lesion, for the development of burn disease great importance has a affected area. There are many ways to determine the area of ​​the burn surface. Since the palm of an adult is approximately equal to 1% of the surface of his body, the “rule of the palm” can be used to roughly estimate the area of ​​​​the lesion. The number of palms placed on the surface of the burn corresponds to the percentage of the affected area.

The “rule of nines” is also widely used in clinical practice. This rule is based on the fact that the area of ​​individual parts of the adult human body is equal to or a multiple of 9% of the total body surface. According to the "rule of nine", the surface of the head and neck is about 9%, one upper limb - 9%, one lower limb- 18%, anterior surface of the body - 18%, posterior surface of the body - 18%, perineum - 1% of the total surface of the body. In addition to the “palm” and “nines” rules, special tables have been developed for calculating the affected body surface, which are usually used in the corresponding hospitals.

Symptoms of thermal burns:

1st (first) degree:

For first degree burns characteristic symptoms are diffuse redness and moderate swelling of the skin, appearing a few seconds after a burn with flame, boiling water, steam or several hours after exposure sun rays. Severe burning pain is noted in the affected area. In typical cases, after a few hours, and more often within 3-5 days, these phenomena disappear, the damaged epidermis sloughs off and the skin acquires its normal structure; Sometimes a slight pigmentation remains at the burn site.

2 (second) degree:

The clinical picture of second degree burns is quite typical. Their distinctive feature is the formation of bubbles. Bubbles form immediately or some time after exposure to a thermal agent. If the integrity of the exfoliated epidermis is not violated, then the size of the blisters gradually increases during the first two days. In addition, during these two days, bubbles may form in places where they were not present during the initial examination. The contents of the bubbles are first clear liquid, which then becomes cloudy.

In typical cases, after 2-3 days the contents of the bubbles thicken and become jelly-like. After 7-10 days, the burns heal without scarring, but redness and pigmentation may persist for several weeks. Sometimes suppuration is possible in the blisters: in these cases, the liquid filling the blisters becomes yellow-green. In addition, an increase in swelling of the tissue surrounding the burn and an increase in redness are simultaneously noted. To a greater extent than with first-degree burns, with second-degree burns, redness, swelling and pain are expressed.

3 (third) degree:

Third degree burns are generally characterized by the formation of a scab. With IIIa degree burns, blisters may also form. With IIIa degree burns, two types of scab are formed: superficial dry light brown or soft and whitish-gray. With dry necrosis, the skin is dry, dense, brown or black, insensitive to touch, with curls of sliding and burnt epidermis. With wet necrosis, which most often occurs under the influence of boiling water or steam, the skin is yellowish-gray, swollen, and sometimes covered with blisters. The loose tissue in the burn area and along its periphery is sharply swollen.

Subsequently, demarcation (separation) of dead tissue occurs, accompanied, as a rule, by infection and suppuration. Rejection of the scab usually begins after 7-14 days, its melting continues for 2-3 weeks. In typical cases, IIIa degree burns, regardless of the area of ​​damage, epithelialize by the end of the 1st to the middle of the 2nd month due to independent island and marginal processes.

IIIb degree burns (deep) can clinically manifest themselves in the form of dry (coagulation) necrosis, wet (colliquation) necrosis and so-called skin fixation. Under the influence of a flame or upon contact with hot objects, coagulation (dry) necrosis develops: the affected skin appears dry, dense, brown, dark red or black. In the area of ​​large joints, the skin forms rough folds and wrinkles. A characteristic sign of dry necrosis is slight swelling and a rather narrow zone of redness around the lesion.

A dry scab does not change externally for quite a long time - right up to the onset of purulent inflammation. The process of recovery under the scab begins already on the 5-6th day, however, the formation of a demarcation shaft (demarcation) and the separation of necrosis zones ends only by the end of the 1st - mid-2nd month, when complete rejection of the scab is observed. Unlike superficial burns, epithelization in deep thermal lesions occurs only due to the marginal process and proceeds slowly, and independent epithelization of deep burns is possible only with very small lesions (no more than 2 cm in diameter).

When scalded (less often when clothes smolder on the body), wet necrosis develops. Dead skin with wet necrosis is pasty, swollen, and the swelling extends beyond the burn surface. Skin color varies from white-pink, mottled to dark red, ashy or yellowish. The epidermis usually hangs down in patches, but occasionally blisters may form. Unlike dry necrosis, with wet necrosis the demarcation line is not so clearly expressed, inflammation spreads beyond the burn wound; The development of granulations in the area of ​​wet necrosis is characteristic.

Cleansing of a burn wound with wet necrosis occurs on average 10-12 days earlier than with dry necrosis. With distant (from the Latin distantia - distance) burns that develop from intense infrared radiation, a kind of thermal damage occurs, the so-called “fixation” of the skin. First, with this exposure, the clothing above the burn may not catch fire. Secondly, the burned skin in the first 2-3 days is paler and colder than the surrounding undamaged areas. A narrow zone of redness and swelling forms around the circumference of the lesion. The formation of a dry scab with this type of lesion is observed after 3-4 days.

As the scab is rejected, regardless of the type of necrosis, granulation tissue becomes visible. With positive dynamics of the burn process and adequate therapy, the granulations are bright pink, protrude above the skin level, coarse-grained, the purulent discharge is scanty, and the process of epithelization is noticeable along the edges of the burn wound. The following signs indicate a negative course of the burn process: gray granulations, flabby, flat, rather dry; the surface of the wound is covered with purulent-fibrinous plaque; marginal epithelization slows down or stops.

4 (fourth) degree:

The most severe burns - fourth degree burns - develop most often in anatomical areas that do not have a pronounced subcutaneous fat layer under the influence of a sufficiently long-term thermal effect. In this case, muscles and tendons are successively involved in the pathological process, and then bones, joints, nervous and cartilage tissue.

Visually, IV degree burns can appear:
the formation of a dense scab of dark brown or black color;
charring and subsequent cracking of a dense and thick scab, through the breaks of which the affected muscles or even tendons and bones are visible;
the formation of a whitish scab of relatively soft consistency, formed as a result of prolonged exposure to low-intensity - up to 50 ° C - thermal radiation.

It is typical for IV degree burns that it is almost impossible to accurately determine the future boundaries of muscle necrosis in the first days after injury, which is due to the unevenness of their damage. The development of foci of secondary necrosis of externally unchanged muscles located at a considerable distance from the point of application of heat is possible several days after thermal injury. IV degree burns are also characterized by a slow progression of the burn process (cleansing of the wound from dead tissue, formation of granulations), frequent development of local (primarily purulent complications) - abscesses, phlegmon, arthritis.

Injuries to the respiratory system are observed, as a rule, with deep flame burns of the face, neck and chest. The thermal agent directly affects the mucous membranes of the pharynx, pharynx and larynx, and damage to the trachea, bronchi and alveoli is caused by the action of combustion products. The burned person experiences difficulty breathing, hoarseness of voice, and mechanical asphyxia rarely develops. Upon examination, cyanosis of the lips, singed nasal hair, swelling, hyperemia (redness) and white spots of necrosis on the mucous membranes of the lips, tongue, hard and soft palate, back wall throats. Subsequently, pneumonia often develops. Damage to the respiratory system due to thermal injuries is equated to an increase in the area of ​​a deep burn by 10-15% of the body surface.

Burn disease:

The course of burn disease is divided into four periods: burn shock, acute burn toxemia, burn septicotoxemia, and recovery period.

Burn shock:

Burn shock lasts from 1 to 3 days, it is replaced by a period of acute toxemia, lasting on average 10-15 days and gradually turning into septicopyemia. The beginning of the period of septicopyemia coincides with the beginning of the rejection of dead tissue; its duration varies and depends on the duration of healing of the burn wound. The recovery period begins after the skin has healed. In young and middle-aged people, burn shock develops, as a rule, with II-IV degree burns on an area of ​​more than 15-16% of the body surface. As with other types of shock, during burn shock erectile and torpid phases are distinguished.

In the first minutes, less often hours after burn injury(erectile phase) general excitement and motor restlessness are noted. The victim's consciousness is usually preserved. Chills and muscle tremors are expressed; those who are burned groan and complain of pain in the burned areas. There is an increase in blood pressure, increased respiration and heart rate. Body temperature usually does not increase, and in severe shock it decreases. This phase is not always sufficiently pronounced.

After 2-6 hours, the erectile shock phase is replaced by a torpid phase - inhibition phenomena come to the fore. In the first 1-2 days, thirst is expressed. Nausea is often observed, repeated vomiting is possible, including “coffee grounds”, which indicates stomach bleeding. On the part of the respiratory system, shortness of breath is observed; dry, and later wet rales are heard in the lungs against the background of hard breathing. Impaired renal function is characteristic of burn shock, which is clinically manifested by oliguria or anuria, and the urine is rich yellow or dark brown.

Timely therapy is of utmost importance, as it can significantly alleviate the course or even prevent the development of the torpid phase of shock. At the same time, additional traumatization of burned people and delayed medical care contribute to the development and more severe course of the torpid phase. Heaviness clinical manifestations burn shock is determined by the depth and area of ​​thermal damage, age and general condition the health of the victim, timely and adequate anti-shock treatment. Depending on the severity, they are divided into mild burn shock, severe and extremely severe shock.

Mild burn shock develops when the total affected area is no more than 20% of the body surface, including deep ones - no more than 10%. Consciousness remains clear, sometimes short-term excitement is noted. The skin of those affected is pale, thirst, muscle tremors are noted, " goose pimples", sometimes there is chills. Nausea and vomiting are rare. Patients are often calm, sometimes excited, euphoric. Breathing, as a rule, does not increase, pulse reaches 100-110 beats per minute, blood pressure remains within normal limits. Urination is not impaired.

Severe shock occurs with deep burns covering more than 20% of the body surface. Sometimes, in young healthy people, severe shock can develop with an affected area of ​​up to 40% of the body surface. Severe shock is characterized by a serious condition of the patient. In this case, consciousness is often preserved. Short-term psychomotor agitation is often observed, followed by retardation. The skin of unburned areas and visible mucous membranes are pale, dry, and cold to the touch. Body temperature is usually reduced by 1.5-2°C. Those affected experience chills, pain in the burn area, increased thirst, and many patients experience nausea and vomiting. Acrocyanosis (blue discoloration of the ends of the body) is often expressed. Breathing is rapid, pulse is 120-130 beats per minute, blood pressure is characterized by instability, but more often it decreases. Kidney damage is pronounced: a decrease in daily diuresis (urine output) reaches 600 (oliguria), blood is detected in the urine.

Extremely severe shock develops with deep lesions occupying 40% or more percent of the body area. There may be short-term excitement, which is soon replaced by lethargy and apathy. In extremely severe shock, consciousness is confused, but often remains preserved. The condition of the patients is extremely serious. The skin is pale, bluish, often with an earthy tint, cold to the touch, with a marbled tint.

Excruciating thirst is typical - the victim drinks up to 4-5 liters of liquid per day, after which uncontrollable vomiting often develops. Body temperature is significantly reduced. Breathing is frequent, shortness of breath and cyanosis of the mucous membranes are pronounced. The pulse decreases to thread-like and may not be detected. Arterial pressure decreases significantly (maximum - up to 100 mm Hg). Anuria develops, oliguria is less common. Extremely severe burn shock is characterized by sharp hemoconcentration (blood thickening) and a decrease in circulating blood volume by 20-40%.

Burn shock lasts from 2 to 48 hours, in rare cases it lasts up to 72 hours. With a favorable outcome and timely treatment, peripheral blood circulation first begins to be restored, then urination normalizes.

Burn toxemia:

During the period of burn toxemia, symptoms of intoxication begin to appear. The condition of those affected depends on the area and depth of the lesion, as well as the location of the burn. The state of health of patients with superficial burns often remains satisfactory. With deep lesions, fever is noted, body temperature rises to 38-39°C, agitation, delirium, insomnia or drowsiness are observed, and sometimes muscle twitching and cramps. In some cases, the development of a coma is possible. Are developing arterial hypotension, myocarditis. The most important symptoms toxemia are pallor, fever, tachycardia, arrhythmias. From the gastrointestinal tract, thirst, dry tongue are noted, and sometimes yellowness of the sclera and skin is observed. Characterized by decreased appetite, nausea, repeated vomiting, intestinal paresis or toxic diarrhea. Burn toxemia lasts an average of 10-15 days and gradually turns into septicotoxemia.

Burn septicotoxemia:

Burn septicotoxemia develops most often with deep burns exceeding 5-7% of the body surface, or in patients with widespread superficial thermal lesions. The onset of septicotoxemia is directly related to suppuration, which usually develops on the 12-15th day after a burn injury. On average, 2 or even 3 weeks pass from the start of scab rejection to cleansing of the burn wound. The wound is then filled with granulations. This period lasts until the skin heals or undergoes surgical (surgical) restoration.

The condition of those affected during the period of septicotoxemia remains severe - the high temperature remains, and intoxication is pronounced. Clinically, the period of septicotoxemia is manifested by purulent-resorptive fever, which can be constant, remitting (with ups and downs), less often the fever is hectic (debilitating) in nature. Characterized by insomnia, lethargy, and delirium may occur. Increased heart rate is evident, toxic myocarditis and microcirculation disorders persist. Nutritional disorders associated with decreased appetite (up to anorexia - its complete absence) and disruption of all functions of the gastrointestinal tract, including dysfunction of the liver and pancreas, are worsening. Due to toxic inhibition of erythropoiesis and blood loss during dressings and operations, secondary anemia persists, and bacteremia may develop, turning into sepsis.

With the improvement of the condition of the burned, as necrotic tissues are rejected and granulations develop, the course of the burn disease becomes subacute with a noticeable improvement clinical condition sick.

With a less favorable course of the pathological process, burn exhaustion may develop. It is usually observed in deep burns with long-term existence of burn wounds occupying at least 15-20% of the body surface, but in cases of inadequate and untimely treatment can also develop with smaller (within 10%) deep burns. With burn exhaustion, the body weight of those affected can decrease by 10-20%, and with especially severe defeat- even by 25-30%. With burn exhaustion, weight gain is observed clinical symptoms- granulations become pale and flabby, and bleed easily. General lethargy and immobility are expressed, bedsores form, anemia and a decrease in protein content are detected in the blood.

The recovery period begins after the elimination of acute manifestations of the burn disease and complications, but does not mean final recovery. First of all, there is an improvement in the condition of the patients - the body temperature decreases, the psyche of the victims normalizes, and their activity increases. However, even with slight physical activity the number of heartbeats increases sharply. The examination reveals dysfunction of the kidneys and liver, which indicates the incompleteness of the pathological process. Metabolic disorders (dysproteinemia, anemia), changes in the cardiovascular system (tachycardia, hypotension), disorders of the respiratory system (shortness of breath during exercise), gastrointestinal tract (including increased or decreased appetite), and kidneys may be recorded for a long time. During the recovery period, scar formation begins.

All of these disorders are expressed to varying degrees and in different combinations, their duration and outcome depend on the severity of the pathological process and the quality of therapy.

During the recovery period, complete or almost complete healing of the burn wound occurs, and the patient’s ability to move and basic self-care is restored. The course of a burn disease may be accompanied by mental disorders, which are characterized by: acute onset and the correspondence between disorders of the psycho-emotional sphere and severity somatic symptoms. Mental disorders in burn disease refer to somatogenic, symptomatic disorders caused mainly by stress, intoxication, infectious and other complications of internal organs.

Mental disorders in burn disease are characterized by motor agitation and asthenic syndrome, which usually develops during the recovery period and persists for a long time. Mental disorders in burn disease are characterized by sleep disturbances and nightmares, the content of which often reflects immediate events associated with the burn injury. Asthenic syndrome can persist for a long time (for 1-1.5 years). A specific manifestation of mental disorders in the long-term period may be obsessive fear fire. A typical manifestation of this disorder is the fear of lighting a fire, in other cases - the fear of looking at the fire.

In elderly and senile people, features of the course of burn disease are noted, associated both with the frequent presence of various diseases (diabetes, ischemic disease heart disease, hypertension, etc.), and with a natural physiological decrease in the protective and adaptive abilities of the body. Under these conditions, even limited superficial thermal damage can be accompanied by the development of quite serious disorders. In the elderly, it is possible to develop burn shock with relatively smaller lesions (shock in the elderly can occur with burns of II-IV degrees on an area of ​​8-12% of the body surface). In elderly and senile people, toxemia and septicotoxemia are more severe, and a higher number of serious complications with less severe burn injuries.

Complications from burns:

One of the most difficult and dangerous complications burn disease is sepsis, which threatens victims with deep lesions of more than 20% of the body surface. One of the mechanisms for the development of burn sepsis is the suppression of the immune system of patients with burn disease.

When the affected area is more than 15-20% of the body surface, many victims develop a specific complication of burn disease - burn exhaustion. The development of this complication is associated with the burn wound itself, which contributes to prolonged intoxication of the body, resorption of tissue decay products, microorganisms and their waste products. Protein deficiency and dysfunction of the digestive organs, including the liver, are also important.

Symptoms of burn exhaustion are recorded from the beginning of the period of septicopyemia; subsequently, a smooth progression of signs of burn exhaustion is observed: weakness increases, sleep disturbance, irritability, severe lethargy and asthenia are noted. Despite appropriate therapy and adequate nutrition, there is a decrease in the patient’s weight, reaching in some cases 30% of body weight. In general, the symptoms of burn exhaustion are characterized by a process of general atrophy.

Body temperature often remains normal or increases slightly even with the addition of infectious complications, characterized by progressive adynamia, tachycardia, a tendency to hypotension, bedsores, muscle atrophy, neuritis, edema, anemia. At various stages of a burn disease, usually during periods of toxemia and (or) septicotoxemia, pneumonia can develop. In the first days after a burn, pneumonia is usually caused by damage to the respiratory system by combustion products. For timely diagnosis of pneumonia, X-ray examination is of paramount importance, since in case of a burn in the area chest It is difficult to hear wheezing using a phonendoscope.

Various complications from the digestive system are possible. Burned people often develop acute ulcers of the gastrointestinal tract, which may be accompanied by bleeding or perforation. Cholecystitis is less common; it is also possible to develop thrombosis of abdominal vessels, acute pancreatitis, acute appendicitis. It should be noted that in case of burn disease, the diagnosis of acute surgical diseases abdominal cavity is objectively difficult.

With severe burn intoxication, the development of toxic hepatitis and liver failure is possible. Late after burns, the kidneys may be affected with the development of pyelitis and pyelonephritis. With burn exhaustion, urinary stones can form and polyneuritis can develop.

Local complications of thermal injuries include furunculosis, phlegmon, purulent arthritis, as well as gangrene of the extremities with circular burns. Incomplete restoration of the skin and underlying tissues lost as a result of a deep burn leads to the development late complications- burn deformities, contractures, subluxations and dislocations, ankylosis, as well as long-term trophic ulcers.

Chemical burns:

Chemical burns are caused by strong inorganic acids (nitric, sulfuric, hydrochloric, hydrofluoric, etc.), alkalis (caustic potassium, caustic sodium, quicklime, caustic soda), as well as salts of some heavy metals(silver nitrate, zinc chloride, etc.). Acids and similar active ingredients cause coagulation necrosis, i.e. dehydration and coagulation of tissues, resulting in their death as dry necrosis. Alkalis and similar active substances cause saponification of fats and the development of wet necrosis. There are also thermochemical burns caused by the combined effects of an aggressive substance and a high temperature factor.

Chemical burns most often affect open areas body, however, if acids and (or) alkalis are accidentally ingested, burns of the mucous membrane of the mouth and esophagus are possible. Peculiarity chemical burns consists in the fact that liquid aggressive substances that come into contact with the skin spread over its surface. Chemical burns are usually limited in area, with clear boundaries of the lesion, have an irregular shape and are characterized by the formation of smudges along the periphery - traces of the spreading of the chemical substance. The areas of skin that were initially affected by the aggressive substance are more deeply affected.
Chemical burns (as well as thermal burns) are divided into four degrees according to the depth of tissue damage.

1st (first) degree:

First degree burns are characterized by redness, moderate swelling and the formation of thin crusts and spots. Swelling with burns caused by alkalis is more pronounced than with burns caused by acids. The course of first degree burns is favorable; infectious complications and suppuration, as a rule, do not occur. Swelling goes away on the 3-4th day, dry crusts fall off from the burned surface at the end of the 1st - beginning of the 2nd week, leaving pigmentation that lasts for several weeks.

2 (second) degree:

With chemical burns of the second degree, blisters do not form, which makes them distinctive feature. Rejection of the scab after a second-degree burn with acids occurs in the 3-4th week. In case of burns with alkalis, the scab most often festers and after 3-4 days a suppurating, covered necrotic tissue wound.

3-4 degrees:

In case of burns with acids of the III-IV degree, the scab begins to be rejected from the 20-25th day, this process lasts 1-4 weeks; for deep burns with alkalis, the wound is cleared of necrotic tissue at the end of the 3rd - beginning of the 4th week. The course of chemical burns is slower compared to thermal burns - the rejection of dead tissue, the formation of granulations and the healing of the burn wound occurs more slowly. Burn disease in chemical burns develops relatively rarely, however, the phenomenon of general intoxication due to the absorption into the blood of compounds of aggressive substances formed in the burn wound (formerly total - acids) Maybe.

Burns in children:

Burns in children are quite common and life-threatening injuries, the consequences of which can cause disability.

The main causes of burns in children are contact with hot liquids on the skin (69% of cases) and touching hot objects (18%). Such burns are typical for children aged 1 to 3 years. Flame is ranked third as a cause of childhood burns. The main patterns of development of skin damage and burn disease in children and adults do not differ, but due to the anatomical and functional characteristics of the child’s body, these changes manifest themselves more intensely than in adults.

This is explained by immaturity children's immunity and anatomy: compared to adults, the skin of children is thinner and more delicate, has a more developed network of blood and lymphatic vessels, and therefore has higher thermal conductivity. This feature of the skin leads to the fact that deep burns occur in children as a result of the action of a thermal agent, which in an adult will cause only superficial damage.

The development of burn disease in children, especially younger age groups, is possible when only 5% of the body surface is affected.

In this case, the more severe the burn disease is, the younger the child’s age. The area of ​​deep thermal damage in a child is already 10% critical. The immaturity of regulatory and compensatory mechanisms in young children can lead to the development of a clinical situation when a sudden, uncontrollable medicinal correction The child’s condition may deteriorate within a few minutes after the burn injury.

In children under 3 years of age, shock can develop with burns that occupy 3-5% of the body surface, in older children - with damage to 5-10% of the body surface. Features of burn shock in children include a more severe course of the disease than in adults and a higher intensity of clinical manifestations. Children develop faster metabolic and circulatory disorders, and dysfunction of the most important organs and systems. Children have pronounced symptoms such as agitation, sometimes with convulsive seizures, followed by lethargy, chills with twitching of facial muscles, severe pallor of the skin, cyanosis of the nasolabial triangle, thirst, nausea, and repeated vomiting. In children of younger age groups, one of the features of burn shock is a pronounced increase in body temperature. Shock is most severe in newborns.

Acute burn toxemia develops, as a rule, after a short-term satisfactory state of health of the child. Features of clinical manifestations of toxemia in children: high temperature up to 40°C, often accompanied by delirium, confusion, convulsions, development of complications (pneumonia, acute erosive-ulcerative gastritis, toxic hepatitis, myocarditis. The duration of acute burn toxemia in children most often ranges from 2 up to 10 days.

The period of septicotoxemia in children, which develops after suppuration of a burn wound, is characterized by severe sleep disturbance, depression, irritability, lack of appetite, as well as a remitting type of fever with a range of up to 2°C.

Recovery in children proceeds with bright positive dynamics, when mood clearly changes, sleep improves, appetite appears, and temperature decreases.

Complications of burn disease in children are more often observed during the period of septicotoxemia. Typical complications in children include otitis media, ulcerative stomatitis, recurrent pneumonia, lymphadenitis, abscesses, phlegmon, nephritis, hepatitis.

The most severe complication of the period of septicotoxemia is burn exhaustion, in the development of which inadequate treatment plays a significant role. Burn exhaustion in children is often complicated by sepsis with the formation of multiple purulent foci in the internal organs.

Among the complications remote period It should be noted the possibility of changes in the activity of the endocrine glands, which may result in the child’s growth arrest and delayed puberty.

Treatment:

Thermal burns:

First aid for burns at the scene is aimed at quickly stopping the action of the thermal agent. It is fundamentally important to have clear and quick action both the victim himself and those providing first aid to the victim. Flammable clothing or substances burning on the body must be extinguished as quickly as possible. Clothing that is on fire or soaked in hot (chemical) liquid must be quickly discarded. The victim should be removed from the affected area as soon as possible.

In cases where it is not possible to remove clothing, it is necessary to stop the access of air to the burning area: cover it with thick cloth or a blanket; extinguish with a stream of water; sprinkle with earth or sand; As a form of self-help, you need to lie on the ground so as to press the burning surface to it. You can knock down the flames by rolling on the ground; if there is a pond or container with water, you need to jump into it or immerse the burned organ in water. You cannot knock out the flames with unprotected hands, or run in burning clothes, as this will intensify the burning. To reduce the duration of thermal effects on tissue and to reduce the depth of damage, the affected area should be quickly cooled available means(immersion in cold water, snow, etc.).

After the thermal agent ceases to act, a dry aseptic bandage is applied to the burned part of the body. In case of extensive burns, the victim is wrapped in a sterile sheet, clean cloth, linen, protected from cooling and transported to the hospital as carefully as possible. Apart from applying an aseptic dressing, you should not perform any manipulations on the burn wound. If the hands are affected, it is necessary to urgently remove existing rings and (or) rings. It is important to know that damaged clothing is not removed from burned areas of the body in order to prevent additional trauma; you need to cut it or rip it apart along the seam and remove it as carefully as possible. It is not always necessary to remove all clothing from the victim, especially in cold weather.

In case of damage to the respiratory system and in case of poisoning by toxic substances formed during combustion (primarily synthetic materials), the most important priority measures are to ensure the victim's airway is open, supply clean air and monitor airway patency.

If possible, before the arrival of an ambulance or when independently transporting the injured person to a hospital, it is necessary to administer painkillers and sedatives to the injured person before hospitalization.

In the ambulance along the route, to prevent burn shock, painkillers (including narcotic analgesics), antihistamines and cardiovascular drugs are administered; infusion therapy- blood substitutes of hemodynamic action - polyglucin, reopolyglucin, etc. - are administered intravenously by drip or stream. Seduxen injections are used to eliminate agitation.

In case of cardiac and respiratory arrest on the spot, before the arrival of specialists (ambulance, rescue service), the entire range of resuscitation measures is carried out - artificial respiration, indirect massage hearts.

The final treatment of burns is carried out in specialized hospitals - burn centers and burn clinics, which have experienced, trained medical and nursing personnel and the necessary equipment. According to indications, transfusion detoxification therapy is carried out, modern sorption methods of therapy are used, and infectious complications are combated. Surgical treatment burns involves the most complete restoration of the skin, including the use of modern methods of dermatoplasty.

Chemical burns:

The severity of chemical burns largely depends on the timing of first aid, the main task of which is to quickly remove (neutralize) the aggressive substance that has entered the skin or digestive tract. To do this, wash the affected area (gastric lavage) with a large amount of cold running water.

If washing is performed immediately after an injury, it should last at least 10-15 minutes, if assistance is delayed - at least 40-60 minutes, and in case of damage with hydrofluoric acid - for 2-3 hours. The criterion for the sufficiency of washing the affected area is the disappearance the smell of an aggressive substance. Do not wash burns caused by organic aluminum compounds with water, since these substances ignite when interacting with water; they are removed from the skin with organic solvents - kerosene, gasoline, alcohol, etc.

Having completed washing the affected area, chemical neutralization of aggressive chemical substances is used: for burns with acids, use a 2-3% solution of sodium bicarbonate; when damaged by alkalis, weak acids are used; for lime burns, use a 20% sugar solution in the form of lotions; for burns with carbolic acid, bandages with glycerin and milk of lime are applied; for burns with chromic acid, use a 5% solution of sodium thiosulfate; For burns caused by salts of heavy metals, apply bandages with a 5% solution of copper sulfate.

The burn surface when exposed to chemicals is treated according to general rules. Toilet of a burn wound with phosphorus damage should be carried out in a dark room, since the phosphorus residues in the wound are not visible in the light.

Treatment of burns in children:

First aid at the scene of an incident is aimed at stopping the effect of the thermal agent on the skin: in case of flame burns, it is necessary to extinguish burning clothing by wrapping the child in thick fabric; in case of burns with hot liquids, quickly wash the burned areas with cold water.

Then you should carefully remove the burned child’s clothes and wrap him in a clean sheet; if age allows, give an anesthetic (Panadol, analgin, etc.) orally and immediately call an ambulance. Indications for infusion therapy during hospitalization occur more often in children than in adults. Treatment of children in a hospital is carried out according to the same principles as the treatment of adult patients - toileting of burn wounds, application of aseptic dressings, administration of anti-tetanus serum and toxoid, etc.

Peculiarities antishock therapy in children with burns:
All children with burns on an area of ​​more than 10%, and children under 3 years old - more than 3-5% of the body surface, need anti-shock therapy;
in the first 8 hours after a burn injury, children need to be administered 2 times more infusion solutions than in the remaining 16 hours, since the most intense loss and redistribution of fluid in the body of children is observed in the first 12-18 hours, especially in the first 8 hours. To calculate the amount of infusion solutions administered per day, use the following formula: 3 ml should be multiplied by body weight (kg) and by the area of ​​the burn (%). Half of this dose is administered in the first 8 hours after burn injury.

Abstract on the topic:

"Complications of thermal And chemically x burns »


In case of deep burns, accompanied by full-thickness necrosis of the skin, after the rejection of necrotic tissues, defects arise, to close which it is often necessary to resort to in various ways skin plastic surgery. Skin grafting for burns speeds up the wound healing process and provides better functional and cosmetic results. In case of extensive deep burns, skin grafting is the most important element in the complex treatment of victims. It improves the course of burn disease and often (in combination with other measures) saves the life of the burned person.

IN last years Many surgeons, immediately after the boundaries of necrosis are clearly identified, excise dead tissue under anesthesia and immediately close the wound with skin grafts. For small but deep burns (for example, from drops of molten cast iron among foundry workers), it is often possible to excise the entire burned area of ​​skin within healthy tissue and close the surgical wound with interrupted sutures. For more extensive burns, suturing the defect after excision of dead tissue, even with the addition of releasing incisions, is only occasionally possible. Excision of necrotic tissue - necrectomy - can be performed soon after the burn or at a later date, when sequestration has already begun.

Early necrectomy, usually performed 5-7 days after the burn, has significant advantages. It can be considered as an abortifacient treatment. With this method, it is possible to avoid suppuration of the wound, achieve a relatively quick recovery of the victim and obtain the best functional results. However, complete simultaneous excision of necrotic tissue in extensive burns is a very traumatic intervention, and therefore it should be used mainly in non-weakened patients in whom the dead areas to be removed do not exceed 10-15% of the body surface (Arts and Reise, A.A. Vishnevsky, M.I. Schreiber and M.I. Dolgina). Some surgeons decide to perform early necrectomy even with more extensive lesions (T. Ya. Ariev, N. E. Povstyanoy, etc.).

If early necrectomy is not possible, skin grafting must be postponed until the wound is cleared of necrotic tissue and a granulation cover appears. In these cases, during the next dressings, painless staged necrectomies are performed, accelerating the sequestration process. For the same purpose, attempts are being made to use locally proteolytic enzymes (trypsin, etc.), but the effectiveness of the latter method has not yet been sufficiently tested in the clinic.

During dressings, it is advisable to expose the burned surface to ultraviolet irradiation. When the rejection of necrotic tissue begins, irradiation is used in a small dose and gradually increased. To improve the growth and sanitization of diseased granulations, large doses of radiation (3-5 biodoses) are used. Ultraviolet irradiation is contraindicated in the presence of severe intoxication.

After cleansing the granulating surface, skin autografts are transplanted directly onto the granulations or the latter are first removed. If granulations have healthy looking. then it is better not to touch them, especially with extensive burns, since this is associated with significant trauma. It has been established that with the excision of 100 si 2 of the granulation cover, the patient loses 64 ml blood, when excision of 100 cm 2 of necrotic scab is lost 76 ml blood, and when taking 100 cm 2 skin for transplantation - 40 ml blood (B.S. Vikhrev, M.Ya. Matusevich, F.I. Filatov). The nature of the microflora of a burn wound does not have a significant impact on the outcome of skin grafting (B.A. Petrov, G.D. Vilyavin, M.I. Dolgina, etc.).

For the success of skin autoplasty exclusively important has a good general training the patient and, first of all, the fight against anemia, hypoproteinemia and hypovitaminosis C. It is believed that if the hemoglobin content in the blood is below 50%, skin autoplasty is doomed to failure (B. N. Postnikov). It is also very important to prepare the wound well for transplantation, i.e. to achieve not only complete release of necrotic tissue, but also good condition granulations.

Excision of a skin flap for transplantation is carried out using dermatomes of various designs. Manual dermatomes are used (from the Krasnogvardeets plant, M.V. Kolokoltsev, etc.), electric and pneumodermatomes. Using dermatomes, you can take a uniform thickness (0.3-0.7 mm) large skin flaps. With this method, large donor areas are completely epithelialized under bandages within 10-12 days and, if necessary, can be reused for skin harvesting. To cover limited areas with autografts, some surgeons still use old methods of skin grafting.

Using skin autografts it is often possible to completely close the entire skin defect in one go. With very large defects, sometimes it is necessary to close them in several stages (staged plastic surgery). Some surgeons, with limited resources of skin suitable for autoplasty, in seriously ill patients, in order to save money, cut the excised skin autograft into pieces the size of an ordinary postage stamp (approximately 4 cm 2) and transplant these pieces at some distance from each other [the so-called stamp plastic method] ; the grafts, growing, subsequently form a continuous skin covering. With the branded plastic method of small sizes, the grafts adhere well to the granulations, and in this case there is no need for additional fixation with sutures. Large grafts have to be sewn to the edges of the skin, and sometimes stitched together. After the operation, a tiled bandage is applied, which can be easily removed without damaging the grafts, and a light plaster splint is applied to the limbs. In an uncomplicated postoperative course, the first dressing is performed on the 10-12th day after transplantation, when the flaps usually have already taken root.

For extensive burns, along with autoplasty, homoplastic skin grafting is also used. Skin is transplanted from the corpses of people who died from accidental causes, or taken from living donors, including “waste” skin obtained during surgical operations. When transplanting skin obtained from another person, it is necessary, as when taking blood for transfusion, to have reliable data that the donor did not suffer infectious diseases(syphilis, tuberculosis, malaria, etc.), as well as malignant tumors. In particular, in all cases the Wasserman reaction is required. When using cadaveric skin, these sections must be taken into account.

Skin homografts, due to immunological incompatibility, take root only temporarily (including grafts taken from the victim’s closest relatives). They usually reject or resolve within the next few days or weeks after the transplant. However, temporary engraftment of grafts often allows you to gain time to eliminate dangerous hypoproteinemia and better prepare the patient for subsequent autoplasty.

Skin homografts can be prepared for future use; for this purpose, they are preserved in various liquid media or by lyophilization. In the latter case, pieces of leather are subjected (in special devices) to freezing to -70° and simultaneous drying in a vacuum. Transplants treated in this way are then stored in special ampoules under vacuum conditions for an unlimited time. Before use, they are immersed for 2 hours to soak in a ¼% novocaine solution.

In some cases, patients with extensive burn surfaces are successfully treated with combined auto- and homoplasty. With this method, small-sized auto- and homografts are placed on the surface of granulations in a checkerboard pattern. With combined plastic surgery, homografts contribute to the revitalization of repair processes and, in particular, faster engraftment and growth of autografts. The latter, growing, can imperceptibly replace homografts before they are rejected. Homoplasty, combined plastic surgery, as well as the branded autoplasty method, are used primarily for burns of the torso and large segments of the limbs (except for the joint area).

To prevent the development of disfiguring scars, stiffness and contracture of the joints, along with the use of skin grafting, they become of great importance, especially in the convalescence phase. various methods physiotherapy and balneotherapy (paraffin, ozokerite applications, mud, hydrogen sulfide and other baths, galvanization, iontophoresis, massage, mechanotherapy, etc.) and therapeutic exercises.

Complications. With extensive thermal burns, various complications are often observed. Burn disease itself is the most common complication of extensive lesions. In addition, there are complications from internal organs and local complications. Changes in internal organs that occur during the first two weeks after a burn are very often reversible (I.A. Krivorotoe, A.E. Stepanov).

Changes in the kidneys during a burn are expressed in the first hours and days after injury in oliguria, and sometimes anuria. Transient false albuminuria often occurs. In subsequent periods, pyelitis, nephritis and kephrosonephritis may be observed.

Bronchitis, pneumonia, and pulmonary edema often occur with extensive burns. If the burn was accompanied by inhalation of hot vapors and fumes, then the victims experience hyperemia and pulmonary edema, small infarctions and atelectasis, as well as emphysema of individual segments. In seriously ill patients, especially with chest burns, pneumonia is often not recognized due to the inability to apply physical examination methods. Pulmonary edema occurs mainly during periods of shock and toxemia. Bronchitis and pneumonia can occur throughout the entire period of burn illness. Complications from the digestive system often accompany burn disease. Especially often observed transient disturbances secretory and motor functions of the stomach and intestines. Sometimes acute gastric ulcers of the duodenum occur, which are a source of gastroduodenal bleeding or cause perforation (A.D. Fedorov). Rarely occur acute pancreatitis. Liver functions are often impaired (N.S. Molchanov, V.I. Semenova, etc.); with extensive burns, necrosis of the liver tissue is possible. Complications from the cardiovascular system (toxic myocarditis, cardiovascular failure) and nervous system. Sometimes thromboembolism is observed (A.V. Zubarev), caused by changes in the dispersion of blood proteins and their composition, blood chemistry, changes vascular wall, the presence of infection, etc. The function of the endocrine glands is disrupted.