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Drowning is a type of suffocation induced by the submersion of the mouth and nose in a liquid. Submersion injury refers to both drowning and near-miss incident. Most instances of fatal drowning occur alone or in situations where others present are either unaware of the victim's situation or unable to offer assistance.
The first stage of cold water immersion syndrome, the cold shock response, includes a group of reflexes lasting under 5 min in laboratory volunteers and initiated by thermoreceptors sensing rapid skin cooling. Water has a thermal conductivity 25 times and a volume-specific heat capacity over 3000 times that of air; subsequently, surface cooling ...
Cold shock response is the physiological response of organisms to sudden cold, especially cold water, and is a common cause of death from immersion in very cold water, [5] such as by falling through thin ice. The immediate shock of the cold causes involuntary inhalation, which if underwater can result in drowning.
Dry drowning has similar causes, but in this case, the water never reaches the lungs. It affects the vocal chords and causes spasms, shutting off the airways from oxygen. Victims of dry drowning ...
In 2017, a study led by Li found that children with autism were "160 times as likely to die from drowning as the general pediatric population." ... such as rushing rivers or ice-cold water, Quinn ...
I used to read stories about near drownings every summer and think, "I'm so glad that didn't happen to me." Then it did.
Cold water in the outer ear passage, chilling the inner ear, particularly severe if the eardrum is ruptured. Use of a hood to keep the head covered. Water leaking into the hood will warm up before entering the external auditory opening and will be reasonably warm before reaching the eardrum, and will soon reach body temperature if flushing is ...
Children who have near-drowning accidents in water near 0 °C (32 °F) can occasionally be revived, even over an hour after losing consciousness. [74] [75] The cold water lowers the metabolism, allowing the brain to withstand a much longer period of hypoxia.