@fmerkel
Totally understand no one here can clear him. Again if it's a definite no go then he doesn't want to waste time and money on Drs visits at this time.
He says he was treated for sleep apnea for 3 months prior to the PFTs and was/is 100% compliant. AHI was under 2 during that time but he thinks the hypoxia wasn't taken care of until after the PFT's. I guess he bought his own pulse oximeter and saw oxygen levels still dropping at night and then had a oximetry test done at home while using APAP and AHI that night was around 1 but oxygen was under 88% for 93 minutes.
@Duke Dive Medicine
Thanks, I'll let him know that and that he should make an appointment and that it's not a definite no go.
What I am kinda curious about is how low his residual volume is, if at depth would that further decrease it and if so could that cause any issues ?
Residual volume shouldn't change significantly while breathing compressed gas under water. That only comes into play with free divers.
Best regards,
DDM