1 / 18

7- Drowning (Immersion):

7- Drowning (Immersion):. It is a form of violent asphyxia in which death results from submersion of mouth and nostrils of a living person under water. Classification (types) of drowning : 1- Typical (wet) drowning: 2- Dry drowning. 3- Secondary drowning (Near-drowning).

mcdowellc
Download Presentation

7- Drowning (Immersion):

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 7- Drowning (Immersion):

  2. It is a form of violent asphyxia in which death results from submersion of mouth and nostrils of a living person under water • Classification (types) of drowning: 1- Typical (wet) drowning: 2- Dry drowning. 3- Secondary drowning (Near-drowning).

  3. Physiopathological changes: • In fresh water  hypervolemia  hypoxia and potassium excess. • In salt water pulmonary edema  hypovolemia and circulatory shock.

  4. Dry drowning: Water in the larynx  laryngeal spasm  asphyxia Near-drowning (2nd drowning syndrome):

  5. glistening pleural surface of a lung

  6. PM picture of drowning: • These are signs of asphyxia unless death occurred from 1- shock, 2- syncope, 3- concussion.

  7. External appearances • Signs of immersion: These are found in any body found dead in water (whatever the cause of death). • Coolness of the body. • Goose-skin the skin is wrinkled. • Washerwoman-skin: the skin is sodden. • Peeling of the epidermis in the form of gloves and stockings. • Hypostasis

  8. 2- Sure external signs: A-Froth: (Fine – White – Odorless _ increase) B-Cadaveric spasm of the hands on weeds, mud, sand, etc.

  9. Internal appearances • Voluminous lungs with indentation marks of ribs on their lateral surfaces. • Respiratory passages contain froth (having the same characters of that found externally at the mouth and nostrils), • foreign material ( weeds, mud, sand,.).

  10. A normal pink aerated appearance with minimal anthracotic pigmentation,

  11. Diffuse alveolar damage in which the lung is diffusely firm and rubbery

  12. Diatoms: • These are microscopic, unicellular algae, found in fresh as well as salt water. • When a live person is drowned in water, they penetrate his alveolar membrane and pass with the circulation to distant organs. • But when a dead body is thrown into water, the absence of beating heart prevents circulation of diatoms to distant organs.

  13. some of the plant material in the water was aspirated into a bronchus.

  14. The medico-legal (ML) importance of diatoms: • 1- Sure signs of drowning, • 2- Could still be identified in putrefied bodies, • 3- Could give an evidence of the site of drowning (fresh or salt water species).

  15. How to know that death was due to drowning: 1-Froth at mouth and nostrils: fine, white, abundant. 2.Cadaveric spasm on weeds, mud or sand. 3.Lungs: voluminous, edematous with indentation marks of the ribs. 4.Froth in the air passages. 5. Diatoms in the tissues.

  16. In putrefied bodies: • Only diatoms could be identified

More Related