Scuba Diver

Hypoxia in Breath-Hold Diving

Despite the attraction of breath-hold diving, there are potential hazards associated with this activity that should be reviewed. Understanding the basic components of the human respiratory drive can help reduce the potential for life-threatening or life-ending complications.

Human respiration is primarily an autonomic function, requiring no conscious effort. We can exercise control over our breathing, but only for short periods. Most of us, at some time in our lives, have

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