My father, 74 years old, has been using BiPAP, for 1 year because he was diagnosed to have both obstructive but mostly central sleep apnea
(after having the sleep
study, polysomnography twice) . He is consulted by a cardiologist and evaluated as normal. He does not smoke, at normal weight and quite healthy, not having any other serious illnesses. He sleeps better after the use of BiPAP but his fatigue continues, especially after having mild physical effort.