emphysema

I was diagnosed with focal emphysema. I don't want to risk getting an embolism or worse by diving again. But how much of a risk would it be to "dive" with scuba gear in water of 13 feet (4 meters) or less. I understand that Wakatobi's House Reef is 90% 6 feet of depth. I would rather use...

Hey, I took a scuba refresher course this morning in preparation for an upcoming trip and practiced a controlled emergency swimming ascent. For the CESA, at the bottom of the pool, 15 feet down, the instructor shut off my air. I got about 1/2 or 3/4 of a lung-full of air before tank went...