I’ve had a bipap for around 9 years. I never snored but actually started falling out of bed and ended up with a sleep study finding out that I had severe sleep apnea probably due to small inside mouth and narrow airway. For a number of years the bipap seemed to keep the apnea’s very controlled, usually under 5. Over the last couple years, they are highly variable typically at least 10 per hour up to 30 some per hour with the machine. I have many more central apnea’s now. The doctor doesn’t seem concerned but I am a bit worried about it. The mask seals 100 percent and the rate has been changed to variable.