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I finally found an answer to my question at Rodale's at http://www.scubadiving.com/training/instruction/buoycalc/qna.shtml: "Most divers know that neoprene compresses with depth, losing buoyancy the deeper you go. But you might be surprised by how much it compresses. Most lose half their...

Is there a way to calculate the buoyancy loss of a wetsuit for depth? Is it half as buoyant at 33 ft. as at the surface? Or, has anyone determined how much buoyancy their wetsuit loses at particular depths relative to being at the surface? Thank you.

I talked to a surgeon who dives and an anesthesiologist today. Both confirmed that rescue breathing is of no benefit to a person with no heartbeat. They also noted that there is a substantial possibility of missing an existing pulse on a diver/victim in the water. According to both of them...

The "should not excessively delay removal from the water" was the point behind my question. Rescue breathing will substantially delay removal of the victim from the water. But, as I have thought about it, maybe this doesn't make any difference. Assuming that 4 minutes without oxygen pretty...

In my CPR refresher course, the instructor insisted that rescue breathing can be effective in delivering oxygen to the brain even if there is no pulse. The NAUI and PADI Rescue Diver courses teach one to do in-water rescue breathing on a non-breathing diver whether or not there is a pulse...