Why does sleep apnea occur in chronic kidney disease ?

Sleep apnea: 70% of sleep apnea patients are obese. 30% are not obese, but the anatomy of face, neck and throat, causes small upper airways, like small lower jaw. Aging, also is a risk factor. Chronic kidney disease is not a major risk factor for sleep apnea, but is a risk factor for restless leg syndrome.

Coincidental?: Like being underwater; unable to breathe. When the co2 in blood gets too high, you blast to surface for a big gasp of air. Osa occurs when airway is blocked during sleep, muscles flaccid/paralyzed. When co2 is too high, brain enters crisis mode, lightens the level of sleep to permit active muscle control and permit a big gasp to replenish o2, then back to deep sleep to do it again. Get osa treated.