Drowning (cont.)

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What happens during drowning?

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Drowning occurs when water comes into contact with the larynx (voice box).

  • After an initial gasp, there is an initial voluntary breath holding.

  • This is followed by spasm of the larynx and the development of hypoxemia (hypo=low + ox=oxygen + emia=blood), or decreased levels of oxygen in the bloodstream.

  • Lack of oxygen causes aerobic metabolism to stop, and the body becomes acidotic. If not corrected quickly, the lack of oxygen in combination with too much acid may lead to problems with the electrical conduction system of the heart (cardiac arrest) and lack of blood supply to the brain.

  • As body function declines, the larynx may relax and allow water to enter the lungs. However, up to 20% of drowning victims have persistent spasm of the larynx, and no water is aspirated (this was formerly known as "dry" drowning).

What are the complications of drowning?

  • Hypoxemia causing brain damage is the major complication in drowning victims who do not die.

  • Direct lung tissue damage because of water aspirated into the lung can also occur and lead to pneumonia and acute respiratory distress syndrome (ARDS).

  • If the drowning occurs in colder water risks include hypothermia or a drop in body temperature. (If the body temperature drops below 95F (35C) get medical attention immediately.)

  • Cervical spine fractures may occur in diving injuries associated with drowning.

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Drowning - Treatment Question: If you know someone who drowned or nearly drowned, what type of emergency treatment was used?
Drowning - Prevention Question: Do you and your family know how to swim? Are you trained in CPR? Please share your experience.
Drowning - What Happens Question: If you had a near drowning experience, please describe what happened and how it felt.
Drowning - Risk Factors Question: Do you know someone who drowned or nearly drowned? What were her/his risk factors (age, medical condition, etc.)?
Drowning - Water Safety Question: Do you have a pool? Please share suggestions for water safety amd how you try to prevent drownings.

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