What do systematic reviews say?

Continuous positive airway pressure (CPAP) plus best supportive care vs best supportive care

Continuous positive airway pressure (CPAP) plus best supportive care showed no clear difference in cardiovascular mortality ‐ after 24 months Number of participants:… compared with best supportive care (low certainty).

• Non‐invasive positive pressure ventilation for central sleep apnoea in adults 2022 · Cochrane Headline outcomes only
  RR 1.17 [0.68, 2.02]
  Studies not reported
  Low