Go The effect of low temperatures | Forensic Medicine

Action of low temperatures

Under the action of low temperature on the body, a number of general and local reactions occur. The occurrence and severity of general and local reactions during cooling depend on the ambient temperature, air velocity, humidity, the state of thermal protection of the body (the nature of clothing), the degree of moisture of the skin, individual characteristics and state of the body. Sick, emaciated people, old people, children are most sensitive to the effects of cold. Anemia, trauma, fatigue, emotional shocks contribute to rapid cooling of the body. Of particular importance in the development of cooling is the effect of ethyl alcohol, since during intoxication the peripheral blood vessels expand and therefore the heat transfer is enhanced.

In addition, the state of intoxication, reducing and distorting the subjective assessment of what is happening, makes it impossible for a person to perceive the danger of hypothermia. Overcooling of the body in 33% of all observations occurs when exposed to temperatures from 0 to + 5 ° C. Low positive ambient temperatures of 5 to 8 ° C are especially poorly tolerated by newborns due to the underdevelopment of heat-regulating reactions and a significant prevalence in the ratio of body surface values ​​over weight.

  • General cooling
  • Local action of cold (frostbite)
  • Control questions
    1. Describe the options for non-lethal effects of low temperature on the human body.
    2. Describe the pathogenesis of death due to hypothermia.
    3. How can one explain that in cases of death from hypothermia, deformities can be pink or purple?
    4. List the signs that are diagnosed on the corpse in cases of death from hypothermia:
    a) during external examination;
    b) with internal research.