TropicalDiver wrote: ↑Sat Nov 16, 2019 11:53 am
Setting aside treatment and occupational choices for the moment, the OP feels he doesn't have apnea because: a) he doesn't feel tired during the day; b) the bed was uncomfortable; and c)he is a light sleeper the first few nights in a new place.
Daytime drowsiness is one indicator of possible apnea -- but it is possible to have apnea and feel like you are not drowsy during the day. And daytime drowsiness is not the only negative consequence of untreated apnea. There is an increased risk of heart attack and stroke. The DOT physical also screens for hypertension -- because of those same risks.
Now, the light sleeping thing. The test doesn't simply measure how many times you woke up. It measures instances where you paused breathing longer than normal (and where typical respiratory effort provided less tidal volume).
I just wanted to add a couple things. I thought I slept pretty well., Sure, I woke up a few times a night, and I was tired. But I thought that was due to not enough hours of sleep. I thought my quality of sleep was fine, and I wasn't sleepy, just tired.
It was only after my split night study with 6 hours on the cpap that I realized just how bad my sleep was before. It had gotten worse over time, so I didn't realize how bad it was. I only got tested because I saw a news story that said that sleep apnea causes high blood pressure which leads to heart attacks and strokes. My doctor had been warning me for 2 years that I was at a higher risk for stroke because my blood pressure was high. I was on 3 medications, and it was still high. i think she assumed I wasn't taking the meds. I knew I had sleep apnea since I snored, but I didn't understand what it really meant.
I can totally understand why somebody would believe they don't have a serious medical problem when they really do.
Also, light sleeping is often a SIGN of sleep apnea. One way the brain tries to prevent damage from sleep apnea is to keep the events from getting too long and causing low oxygen. So, instead, it remains vigilant and causes the person to stay in light sleep and rouse a little each time to prevent the events from getting bad. My oxygen went below 90% for 13% of the diagnostic phase. The lowest was 84%. But I had a high number of short events. And I never reach deep sleep or REM without cpap. My sleep was too light. It's a defense mechanism to avoid deep sleep.
Who would have thought it would be this challenging to sleep and breathe at the same time?