[Pathophysiologic aspects of fatal accidents in apneic diving]

The hyperventilation prior of apneic diving represents the important and dangerous pathophysiological phenomena, capable to evoke the fatal diving accident. The fall of arterial partial pressure of CO2 results after the hyperventilation, and thus the stimulation of the respiratory centre is lowered as well. The underwater black-out results, which leads to the diver's suffocation due to submersion. The work analyses in detail some pathophysiological aspects of the mentioned phenomena.