I have been using a BiPAP since Sept 2011. From the beginning I did not have a problem falling asleep. And up to recent times when I woke up during the night (sometimes 2-3 times) to go to the bathroom, I had no problem falling back to sleep. I have an enlarged prostate which is why I wake up so muc...

When I was tested apneas and hyponeas occurred at a rate of 18.3 events per hour.

When I was tested, I was told I have both obstructive and central apnea. As a result, I am using a RESMED S9/Hi5. When I first started using it, I did have non zero AHI's but they seemed to disappear after a few days of using the machine. Then for over a month, my AHI was consistently zero. Is this ...