The last of my personal health issue shows covers two related issues, Sleep Apnea and Atrial Fibrillation. They are related because Sleep Apnea is a cause of Atrial Fibrillation. Fortunately both can be controlled if you follow medical directions.

https://www.mayoclinic.org/diseases-conditions/sleep-apnea/symptoms-causes/syc-20377631

http://www.heart.org/en/health-topics/atrial-fibrillation/what-is-atrial-fibrillation-afib-or-af

https://www.mayoclinic.org/diseases-conditions/sleep-apnea/symptoms-causes/syc-20377631

https://www.palain.com/?page_id=352