Licensed books on medicine
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By electrical injury is understood damage resulting from the action of technical or atmospheric electricity. A feature of electric shock is that damage occurs both at the point of contact and on the path of the passage of current and its output. Sometimes health problems and death occur without visible damage. However, sometimes they arise from a distance. Electric energy easily and quickly passes into another: mechanical, thermal, chemical, which determines the changes that are used in diagnostics.
Another feature of the action of electric current is its various consequences: from minor damage to death. This occurs in connection with various factors and the conditions of its impact and relates to the physical properties of the current. Its type: variable (more dangerous) and permanent; voltage: high (more than 250 V) and low (more common); current strength, which is already 0.1 A fatal, but it matters in combination with voltage and other current properties. Of great importance is the resistance of the skin and other tissues. Dry, especially corpus callosum skin has good resistance to electric current, moist by half reduces it. Different resistance to the passage of current is provided by clothes, depending on the material. The duration of the contact, the expectation of the current, the density of the contact, and finally the current loop, that is, the path of its passage through the body (most dangerous through the heart or brain) are directly proportional. The electric current has a more negative effect on children, the elderly, pregnant women, patients (especially cardiovascular diseases), and people intoxicated.
The most characteristic specific sign of current is electric. Usually on the skin they look in the form of roller-shaped compacted elevations with a certain depression in the center. The skin around them is unchanged. More often they are found on the palmar surfaces of the brush. But even these lesions must be proved objectively with the help of histological examination.
The origin of electrical injury is the result of an accident due to a violation of safety precautions, negligence, and inattention.
However, there are cases of suicide using electricity. For example, Mr. K. bared the ends, put the electric wires, put them on the temples, covered them with wet wipes, bandaged them, and plugged the opposite ends connected in the form of a plug into a power outlet. Death occurred immediately at the scene.
Cases of killing by applying electrodes to the body of a sleeping person or using force have also been described.
The effect of atmospheric electricity - lightning, although it cannot be used for criminal purposes, is of investigative interest, since the corpse is detected with an unknown cause of death, which can not always be suspected. A lightning discharge is an electric current with a voltage of millions of volts and a current of hundreds of thousands of amperes. In addition to electric current, light and sound energies can be a damaging factor.
Damage in the form of burns, hair scorching, wounds with burned edges, even bone fractures and detachments of limbs occur on the corpse (in rare cases of damage to a person remains alive). Sometimes it is possible to identify "lightning figures" - tree-like brownish spots along the expansion of blood vessels. They are found only in the first hours when examining the corpse at the place of detection, then gradually, after 2 hours, they disappear. In diagnostics, laboratory methods are used: histological, biochemical, contact diffusion (for determining metallization). This is always a quick death (exceptions are extremely rare), so attention is drawn to the relevant signs.
Of great importance, sometimes more specific than damage to the body, are changes in clothes: the melting of metal objects, tears and perforation of clothing, shoes, and the fusion of nails on it. No less important is the inspection of the scene with the identification of traces of lightning near the corpse (damage to a tree, branches, leaves). Sometimes lightning acts through some kind of objects: radio, telephone.
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- Electrical injury
Failure to comply with industrial safety rules, inept or careless handling of electricity in everyday life leads to accidents - electrical injuries. A type of electrical injury is also a lightning strike - the discharge of atmospheric electricity. The effects of electric shock are minor (local changes in the skin, local pain, lethargy,
- Electrical injury to the nervous system
Clinic. The impact on a person of technical or atmospheric (lightning) electricity, the strength of which reaches 0.025-0.05 A, may be accompanied by the onset of symptoms of electrical trauma to the nervous system. Their severity depends not only on the strength of the current, but also on the state of the organism at the time of its impact. Electric trauma is harder for people with thin wet skin, tired, with disorders
- Electrical injury
Electrical injury occurs when an electric current is applied to the human body, as well as atmospheric electricity - lightning. Under the influence of electric current, local and general changes occur in the body. Local tissue changes during electrical injury - “current signs” - have a tree-like shape. They are thermal burns of varying severity - from minor to
- Electrical injury. Drowning. Asphyxia
1. Patient A., 56 years old, was delivered to the clinic with a diagnosis of electrical injury received in a domestic environment. At the scene, he lost consciousness, others carried out resuscitation (mouth-to-mouth ventilation, indirect heart massage). Joint venture employees intubated the trachea and resuscitation was continued. Necessary: to appoint an additional examination,
- Electrical safety Risk of electrical injury
The use of medical electrical equipment entails the risk of electrical injury for both the patient and medical personnel. Therefore, the anesthesiologist must have a basic understanding of electrical safety. Contact of the human body with two conductive objects (conductors), between which there is a potential difference, leads to the closure of the electrical circuit (circuit)
- Ear injury
By electrical injury is understood the defeat of the whole organism or its individual parts as a result of the passage of an electric current. The degree of damage is directly proportional to the time the current passes through the body. The skin has a very large electrical resistance, being like an insulator. All other tissues are an aqueous solution of various salts that transmit current well. As a result
- Lecture. Burns, frostbite, electrical injuries, 2012
Burn disease Epidemiology. Pathophysiology of local lesions. Classification of burns. Pathogenesis of burn shock. Clinic of burn shock. First aid for burns. Pathogenesis and clinic of burn toxemia and septicotoxemia. Treatment of burn disease. Electric trauma. Pathogenesis. Clinic First aid for electrical injury Frostbite Periods and degrees of frostbite First aid and treatment Complications
- ELECTRIC INJURY. PATHOGENESIS, CLINIC
An electrical injury is a lesion that occurs under the influence of an electric current and is the sum of the direct consequences of the passage of an electric current through the tissues of the body and a burn with a flame of a volt arc. Sources of electric current that affects a person can be domestic and industrial electrical installations, atmospheric electricity. Damage occurs as with
- Electrical injury
Electrical injury — damage caused by exposure to high voltage electric current. The most common causes are electrical injuries, contact of a child with exposed electrical wires, and the introduction of metal objects into sockets. The following sources of electrical energy can cause damage: - sources of direct and alternating current (high-voltage lines
- Electrical injury
Electrotrauma - electric shock, accompanied by damage to surface tissues and a possible violation of the activity of organs and systems up to the state of clinical death. The cause of electric shock is as a deliberate unconscious, especially in young children, touching current-carrying elements (wires, contacts, power sockets, etc.),
- ELECTRIC INJURY IN DOGS AND CATS
Electrical injury in dogs and cats occurs when they bite the wire of an electrical device connected to the network. From a sudden electric shock, the animal screams, bounces. A tissue defect and traces of tissue burn are formed on the gums and lips - an electrometric device, which at the first moment has a white-brown color. A feature of electric burns is a deep tissue lesion. The size of the damage depends on
- FIRST AID IN ELECTRIC INJURY
First aid in case of electric shock should be provided immediately at the scene. First of all, it is necessary to free the victim from the action of electric current, because due to loss of consciousness or convulsive muscle contraction, he often can not tear himself away from the wire. It is important to remember about the danger of electric shock to the lifeguard itself. Necessary if it
- First aid for electrical injuries
Damage caused by electric current or lightning (discharge of atmospheric electricity) is called electrical injury. Electrical injury causes local and general disorders in the body. Local changes are manifested by tissue burns at the points of entry and exit of electric current, often very deep, 3-4th degree of severity. Common phenomena - convulsive muscle contractions, loss of consciousness, depression
- Electrical injury
- a person is affected by electric shock / ET /, causing changes in the central nervous system, respiratory and cardiovascular systems, as well as local damage. The most dangerous current with a frequency of 50 Hz and a voltage of 220 and 380 watts. Symptoms of ET damage Pain throughout the body, cramps, blanching of the skin with cyanosis, loss of consciousness, respiratory and cardiac disturbances. Comes almost instantly
- Electrical injury
Electric shock. Scope of examination 1. Electric shock can occur: in direct contact with an electric current conductor, through an electric arc, from "step voltage" that occurs when parts of the body come into contact with the ground near an electric wire lying on the ground. 2. The amazing effect of electric current depends on its physical characteristics (strength and voltage,
- Electrical injury
Electric current has a general and local effect, depending on the strength, voltage, exposure and previous condition of the victim. Meteorological factors, such as air humidity, are relevant. Locally, in the area of the current, a peculiar burn appears without hyperemia, inflammatory reaction and pain - “marks” or “signs” of the current. Frequency range household
- LOCAL INJURIES IN ELECTRIC INJURY. ELECTRIC BURNS
There are the following types of local lesions with electrical injury: Clinic of electric burns has significant differences from thermal. The main feature is extensive damage to deep tissue with a relatively limited superficial lesion. Vessels, as the main conductors of current, are primarily affected by current. Spasm and subsequent thrombosis leads to progressive necrosis.
- Exposure to electric current (electrical injury)
ICD-10 code T75.4 Diagnosis Diagnosis Mandatory Level of consciousness, respiratory rate and effectiveness, pulse, heart rate, blood pressure, medical history (current loop, voltage, loss of consciousness, cardiac arrest), a thorough physical examination, ECG, neurological examination Laboratory studies: hemoglobin, electrolytes, white blood cells, general an. Urine Extra
- Electrical injury. The mechanism of action of electric current. Signs
Mechanism of action: • 380 W –el. crater in the form of a burn, sudden cardiac arrest; • up to 1000 W - cardiac arrest, g / m edema, cramps, respiratory cramps. Muscle • up to 10,000 W — damage to tissues and organs (carbonization), rupture of hollow organs, fracture of bones, strong sound phenomenon; Lower current loop: • h / s. lower limbs (bypassing the heart muscle); • h / s. upper limbs; • h / s.