Ayisha
Contributor
Not necessarily. Even without holding one's breath, significant congestion or an asthma attack can also prevent effective exhalation that can lead to a lung overexpansion injury.
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Not necessarily. Even without holding one's breath, significant congestion or an asthma attack can also prevent effective exhalation that can lead to a lung overexpansion injury.
Are you certain about that? If you are breathing compressed air and surface too quickly you can have issues even without a deco obligation. 30 feet in 30 seconds would not be your best option. I could be wrong though.
Both conditions would mean that the diver should not be diving, and has nothing to do with ascent rate safety on a no-deco dive.
But unless you had a deco obligation (unlikely), that isn't a problem unless you hold your breath...
It is possible to have a Lung Over-Expansion Injury without holding your breath.
Unless you're their doctor, it's not up to you to decide if any diver should be diving or not. Many divers with asthma do have medical clearance from a doctor to dive.
Not terribly likely though. Seen a lot of fast ascents, had one myself, generally not an issue so long as you keep breathing or at least keep the airway open. Sure, you can look at the long odds too if you like.It is possible to have a Lung Over-Expansion Injury without holding your breath.
Many divers with asthma do have medical clearance from a doctor to dive.