Does the treatment of obstructive sleep apnea with continuous positive airway pressure improve heart failure outcomes?

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Maybe not. In patients with congestive heart failure (CHF), continuous positive airway pressure (CPAP) treatment of obstructive sleep apnea (OSA) has no effect on exercise capacity or New York Heart Association (NYHA) classification (SOR: B, small RCTs). Whether there is an effect on ejection fraction is unclear and no evidence is available concerning mortality.

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