My dive buddy is experiencing the following problem:
During the dive and the descent everything is perfectly ok. As soon as he reaches the depth of around 70 ft, however, he begins having breathing problems. After ascending above 70 ft again, everything goes back to normal.
Some points to consider:
1. He is an experienced diver. He has over 100 dives logged, diving 4 times per year.
2. The problem developed suddenly. He has previously dived at depths of 120-130 ft without experiencing any problems.
3. He is 43 years old and appears to be in good health. After having some heart tests done (stress, nuclear), the results came back normal. His cholesterol and blood pressure are slightly high, but still not too bad.
4. We eliminated the regulator (apex-200) as a reason. The 2 of us switched regulators between dives, only for him to continue experiencing this problem. I was fine.
Does anyone have and ideas as to what it could possibly be? Thanks.
Rom
During the dive and the descent everything is perfectly ok. As soon as he reaches the depth of around 70 ft, however, he begins having breathing problems. After ascending above 70 ft again, everything goes back to normal.
Some points to consider:
1. He is an experienced diver. He has over 100 dives logged, diving 4 times per year.
2. The problem developed suddenly. He has previously dived at depths of 120-130 ft without experiencing any problems.
3. He is 43 years old and appears to be in good health. After having some heart tests done (stress, nuclear), the results came back normal. His cholesterol and blood pressure are slightly high, but still not too bad.
4. We eliminated the regulator (apex-200) as a reason. The 2 of us switched regulators between dives, only for him to continue experiencing this problem. I was fine.
Does anyone have and ideas as to what it could possibly be? Thanks.
Rom