@bigj I have severe obstructive SA as well, and it unfortunately was left undiagnosed until my cardiologist ordered a polysomnography over night at a sleep lab. It was the last of a series of tests, including a nuclear stress test on a treadmill. None showed any ischemia, or lack of oxygen to the heart and organs. But, after one night in the local sleep lab, the diagnosis was a shocker to me, 'Severe OSA, 31 events/hr.' The reason I went through all those tests was because I had developed atrial fibrillation near the end of a 10 km maintenance run in June of 2017. The severe OSA made my heart irritable, cranky, and it began to fibrillate in distress.

If your heart is still good, you have a great one with all those events you cite.