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Chapter 5 Death from Burns, Cold and Electrical Injuries

Chapter 5 Death from Burns, Cold and Electrical Injuries. Section 1 Death from Burns 1. Definition: Burns is injury produced by the application of flame, or heated solid substances to the surface of the body. Death from burn.

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Chapter 5 Death from Burns, Cold and Electrical Injuries

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  1. Chapter 5Death from Burns, Cold and Electrical Injuries

  2. Section 1 Death from Burns 1. Definition: Burns is injury produced by the application of flame, or heated solid substances to the surface of the body. Death from burn. Scalding is injury produced by the application hot liquids or gases to the surface of the body. Death from scalding.

  3. 2. Appearances of death from burns (1) External appearances: Burns: 4 grade Grade I:erythema Grade II:vesicle Grade III: necrosis Grade IV: carbide pungilistic attitude，Cilia sign

  4. pungilistic attitude

  5. pungilistic attitude

  6. (2). Internalappearances 1. Thermal respiratory tract syndrome: soot, edema and bronchitis ,etc. 2. Epicardial or endocardialpetechial hemorrhage, blood in color of cherry red, Hb-CO 50%-70%. 3. Soot in stomach. 4. Extradural heat hematoma 5. Degeneration of viscera.

  7. Extradural heat hematoma

  8. Soot in the airway

  9. erythema and vesicle

  10. 3. Mechanism of death from burn (1) shock: traumatic shock (2) Poising of CO and other gases (3) self-poising. (4) Complications and secondary infections (5) Injury accompanied. 4. Forensic expertise (1)Differenciation between death from burn and remains of cremated body

  11. (2) Identification of suicide, homicide or accident. (3) Personal identification.

  12. (2) Identification of suicide, homicide or accident. (3) Personal identification.

  13. Section 2 Death from Cold 1. Definition: Frostbite is a kind of injury in skin caused in low temperature. Death from cold. 2. Appearances of death from cold (1) paradoxical undressing, risus sardonicus, sardonic feature. (2) Visniffski’s spot.

  14. Frostbite

  15. Frostbite

  16. paradoxical undressing

  17. risus sardonicus, sardonic feature

  18. Section 3. Electrical injury 1. Definition Electrical injury is a kind of injury of skin or other tissue and organ cause by electrical current. Death from electricity. 2. The factor of electrical injury (1) Kind of electrical current: DC, AC. (2) Voltage. (3) Intensity of current

  19. (4) electric resistance (5) affecting time (6) route of current pass through the body (7) contact (8) status of body 3. Mechanism of death (1) ventricular fibrillation (2) Respiratory paralysis (3) Electrical burn, secondary shock, fat embolism. (4) Fall from height.

  20. 4. Appearances of electrical injury or death from electricity (1) electric mark (current mark): Electric edema, streaming of nuclei, cooking effect. (2) electric metalization of skin (3) electric burn (4) exit of current (5) osseous pearls

  21. Histology of current mark

  22. Histology of current mark

  23. Scene of death from suicidal electrocution

  24. Cooking effect Current mark

  25. Lightening mark

  26. Lightening mark

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