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Violent Asphyxia

Presented By Dr / Said Said Elshama. Violent Asphyxia. Definition • Signs of asphyxia Types of violent asphyxia Smothering Throttling strangulation Hanging Drowning Choking Traumatic asphyxia •• •. Learning objectives.

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Violent Asphyxia

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  1. Presented By Dr / Said Said Elshama Violent Asphyxia

  2. Definition • Signs of asphyxia Types of violent asphyxia Smothering Throttling strangulation Hanging Drowning Choking Traumatic asphyxia •• • Learning objectives

  3. Lack of tissue oxygenation due to failure of respiratory process . Types of asphyxia due to :- Disease – Poisoning - Violence Violent asphyxia Mechanical interference with respiration leading to fatal oxygen lack Definition

  4. Dark blue hypostasis Internal External Signs of asphyxia Congestion of mucous membranes of air passages Deep cyanosis Congestion of viscera Bulging eyes Sub-conjunctivalHge. Dark fluid blood Protruded tongue Sub-pleural petechialhge and silvery spots Bloody froth

  5. Sub-conjunctival hemorrhage

  6. Petecheal hemorrhage

  7. Smothering Throttling Strangulation Violent Asphyxia Traumatic Chocking Drowning Hanging

  8. Postmortem picture Smothering General external and signs of asphyxia Nail abrasions around mouth and nose • Bruises and contused wounds on inner aspect of lips, cheek and gum with broken teeth • Overlaying : accidental smothering

  9. Throttling General external and internal signs of asphyxia Semi lunar nail abrasions and bruises on the neck Bruises of larynx , trachea, supra and infra-hyoid muscles Fracture of hyoid bone and laryngeal cartilages Inward fracture of cornu of hyoid bone

  10. Bruises of throttling (manual strangulation)

  11. General external and internal signs of asphyxia • Signs of resistance • Ligature mark (transverse, complete, below larynx) • Bruises and congestion with laceration of deep neck tissues • Fracture of hyoid bone and laryngeal cartilages Strangulation

  12. Rope mark of strangulation

  13. Rope mark of strangulation

  14. Hanging Cause of death Cerebral anemia Air passages obstruction Reflex cardiac inhibition Fracture and dislocation of cervical vertebrae

  15. Rope mark of Hanging

  16. Post mortem picture of hanging • General external and internal signs of asphyxia • Ligature mark (oblique incomplete constriction abrasion above the larynx) • Hyoid bone fracture (outward) • Transverse intimal rupture of carotid arteries • Dribbling of saliva from mouth • Hypostasis of lower limbs

  17. Drowning Diagnosis Internal signs External signs • Probable signs • Coolness of body • Goose skin • Washerwoman skin • Peeling of epidermis • Hypostasis Air passages lungs Heart • Sure signs • Fine white foam • Cadaveric spasm Stomach

  18. AIR PASSAGES Fine white odorless foam Congestion of mucosa foreign bodies Aquatic organism Pale and balloning lung sub-pleural petechae and foam

  19. Chocking Pathological • Accidental • Inhalation of Irritant fumes • Inhalation of Sand and dust • Impaction of foreign bodies Homocidal

  20. Mechanical compression of Chest Abdomen Preventing respiratory movements Violet discoloration of Face Neck Upper part of the body Traumatic asphyxia

  21. Thank you Thank you Thank you Thank you

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