ArticleObesity surgery2026
Association Between Obstructive Sleep Apnea and Preoperative Cardiopulmonary Fitness in Patients Undergoing Sleeve Gastrectomy: A Real-World Study.
Article in Obesity surgery, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
contextObstructive sleep apnea (OSA) is highly prevalent in patients with obesity and contributes to metabolic dysfunction and cardiovascular burden. However, its association with cardiopulmonary fitness in metabolic bariatric surgery candidates remains less well characterized.
objectiveTo examine the association between OSA severity and preoperative cardiopulmonary fitness in patients undergoing sleeve gastrectomy (SG).
methodsA retrospective cohort study including 104 patients who underwent SG with preoperative sleep evaluations and Cardiopulmonary exercise testing (CPET). Data from clinical characteristics, portable sleep monitoring studies, cardiopulmonary fitness, and metabolic measurements were collected.
settingA university-affiliated hospital.
resultsHigher OSA severity was associated with lower oxygen uptake (VO2) at anaerobic threshold (AT), reduced power output, blunted heart rate (HR) responses, and decreased oxygen uptake efficiency slope (OUES). After adjustment, higher OSA severity remained significantly associated with lower PowerAT, HRAT, and OUES, among other CPET indices. This effect was observed in both male and female subgroups.
conclusionsHigher severity of OSA was associated with reduced preoperative cardiopulmonary fitness in patients undergoing SG. These results may underscore the potential importance of screening for OSA as part of the comprehensive preoperative evaluation in this population.
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