What do systematic reviews say?

PAP therapy vs usual care

PAP therapy showed no clear difference in cardiac‐related rehospitalisation compared with usual care (low certainty).

• Positive airway pressure therapy for the treatment of central sleep apnoea associated with heart failure 2019 · Cochrane Headline outcomes only
  RR 0.97 [0.7, 1.35]
  5 studies · 1533 participants
  Low