State the most serious form of lung over-expansion injury in diving, how it occurs, and what factors can contribute to its occurrence.
The most serious form of lung over-expansion injury in diving is an air embolism because air bubbles enter the arterial circulation. There are three other forms (remember them from your PADI Divemaster course?) of lung over-expansion injuries which are serious too, but if air bubbles block the blood flow to the organs – brain – they might not get enough blood and encounter serious damage. The diver will become unconscious within seconds and might drown underwater.
Some factors which contribute to lung over-expansion injury:
- Diving after severe chest cold
- Cold water diving
- Exercise after a dive
- Exertion underwater
In order to prevent air embolism (any lung over-expansion injury) from happening you always have to dive according to dive tables and common procedures. NEVER STOP BREATHING UNDERWATER AND BE A S.A.F.E. DIVER – SLOWLY ASCENT FROM EVERY DIVE. Never dive alone and do not drink alcohol when diving. Obviously do not smoke and avoid medications that impair your judgement.
That was our Dive Theory Physiology Series so far. I hope you enjoyed reading about human physiology and diving and that you will find it useful as you go through your PADI Divemaster and Instructor Development courses with Blue Season Bali.
Let me know if you have any questions or you would like to add something by email or comment below.
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