Sleep apnea, beta blocker & wenkebach block

F23 I have a wenkebach block 2nd degree. Before I started the beta blocker or knew I had sleep apnea it would just be a few dropped beats. I’ve had issues with daytime tachycardia for multiple years now and we could never find a cause. I was put on 12.5 mg metoprolol as I wanted to stay low on that. I just had a sleep study and it says I have sleep apnea but I’m most concerned with the fact that it said my heart rate went to 34 bpm at night. Can sleep apnea cause this? The heart block? I just got the sleep study results back.

Im not fit at all. I’m obese. I’m actually worried about the low heart rate while I sleep. Can anyone give some insight? Is there a chance I can die in my sleep?