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Physiological consequences of CPAP therapy withdrawal in patients with obstructive sleep apnoea-an opportunity for an
Esther I Schwarz1, John R Stradling2, Malcolm Kohler1,3
1Sleep Disorders Center and Department of Pulmonology, University Hospital of Zurich, Zurich, Switzerland.
Abstract:
Randomised controlled trials (RCTs) of continuous positive airway pressure (CPAP) in obstructive sleep apnoea (OSA) are time consuming, and their findings often inconclusive or limited due to suboptimal CPAP adherence in CPAP-naïve patients with OSA. Short-term CPAP withdrawal in patients with prior optimal CPAP adherence results in recurrence of OSA and its consequences. Thus, this experimental model serves as an efficient tool to investigate both the consequences of untreated OSA, and potential treatment alternatives to CPAP. The CPAP withdrawal protocol has been thoroughly validated, and applied in several RCTs focusing on cardiovascular and metabolic consequences of untreated OSA, as well as the assessment of treatment alternatives to CPAP.
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