Hypovolemia dehydration and hemoconcentration

Dehydration was reported as a factor that increases the risk of DI during studies on aviators during World War II, and it is still considered a significant risk factor by the international diving and diving medical communities. The mechanism is however again unclear and reliable scientific evidence is missing. Changes in the surface tension in serum favoring bubble formation has been postulated as a possible mechanism. Alcohol ingestion prior to diving, also seems to be a risk factor - possibly due to dehydration.

2.2.1. Dysbaric Illness

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