miketsp:
I should add a rider to my first post above.
For the purposes of this poll, I assume we are talking about divers that have been medically cleared to dive.
As far as I know, oxygen has only been found to worsen certain medical conditions such as strokes and other cardiac related problems. These people shouldn't be diving.
OK....I'm a respiratory therapist- meaning that giving oxygen and being an expert on it is what I do for a living. Let's get a few things straight about O2:
1. The only situation where oxygen is going to be IMMEDIATELY detrimental to a patient's condition is the case of a person with very severe emphysema (COPD) where it CAN (not always) depress the drive to breath. These people can barely walk without collapsing from lack of breathing- so I don't think you will find them on dive boats too often.
2. Any stroke (such as what is caused by an air embolism to the cerebral circulation) or cardiac event is an indication to GIVE oxygen not withhold it. Same goes for DCS, asthma, massive blood loss, or any other condition that is producing signs of shock, etc. It is better, when it comes to O2, to commit an error of commission than an error of omission (basically it's not going to hurt 99.9999%, and if it does anything at all it'll be helping).
3. In the vast majority of states, the good samaritan acts will cover you if you do something in "good faith"; basically if you do something that an average person (usually termed a "prudent layperson") with the believe and intention of helping the victim.
4. The only "common" (meaning happening with any frequency at all) complications from O2 are from HIGH CONCENTRATIONS FOR LONG PERIODS OF TIME (oxygen toxicity) and we are talking days.
As a medical professional, I would not hesitate to give oxygen to anyone who has "taken a hit". When in doubt, give O2. I would want nothing less for myself.
Stephen Richey, CRT, EMT-I/D
Certified Respiratory Therapist; Intermediate Emergency Medical Technician