Obstructive vs central vs complex sleep apnea — and why the distinction matters

Obstructive vs central vs complex sleep apnea — and why the distinction matters

A patient with a OSA vs CSA, PSG showing AHI 28 is told “you have sleep apnea” and is prescribed CPAP. The prescription may be correct. It may also be wrong — fatal-level wrong in rare cases — if the events were predominantly central, or if they convert to central on CPAP initiation. The difference between

EPR, C-Flex, A-Flex, Bi-Flex — exhalation pressure relief explained

EPR, C-Flex, A-Flex, Bi-Flex — exhalation pressure relief explained

At  homemedix , patient who cannot tolerate a CPAP exhalation pressure relief at 12 cmH₂O often tolerates the same prescription with pressure relief during exhalation — the machine drops the pressure by 1–3 cmH₂O for the expiratory phase, letting the patient breathe out against a lower pressure before the next inspiration reinstates the full prescribed value. This feature, under various