Abstract
Rationale: Obesity hypoventilation syndrome (OHS) is an undesirable consequence of obesity. Treatment consists of weight loss and positive airway pressure (PAP) therapy. However, the preferred mode of PAP is uncertain.Objectives: To perform a systematic review to determine whether PAP therapy should be initiated as noninvasive ventilation (NIV) or continuous PAP (CPAP) in ambulatory patients with OHS.Methods: This systematic review informed an international, multidisciplinary panel of experts who had converged to develop a clinical practice guideline on OHS for the American Thoracic Society. MEDLINE, the Cochrane Library, and Embase were searched from January 1946 to March 2019 for studies that compared initial treatment with NIV to CPAP in OHS. The Grading of Recommendations, Assessment, Development, and Evaluation approach was used to appraise the quality of evidence.Results: The search identified 2,994 potentially relevant articles, the full text of 21 articles was reviewed, and five articles were selected. The five articles included three randomized trials (one reported as two articles) and an observational study. The sample size ranged from 36 to 225 subjects. The evidence showed no differences in mortality, cardiovascular...Continue Reading
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