ArticleBMC surgery2026
Effectiveness of bariatric surgery in improving sleep-related symptoms of obstructive sleep apnoea in obese patients: a retrospective cohort study.
Article in BMC 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
backgroundThis study aimed to assess the effectiveness of bariatric surgery in improving symptoms of sleep-related outcomes among obese patients suffering from obstructive sleep apnoea.
methodsThis retrospective cohort study analysed prospectively collected clinical records of patients with a symptomatic diagnosis of obstructive sleep apnoea (OSA), who later underwent bariatric surgery (sleeve gastrectomy or mini-gastric bypass) at the Department of General Surgery at Jinnah Postgraduate Medical Centre (JPMC), Karachi, between 2018 and 2023. Preoperative and postoperative (6 weeks and 3 months) follow-up records were reviewed to extract information on OSA-related clinical features, including apnoea status (yes/no), loud snoring (yes/no), daytime sleep bouts (yes/no), and the number of nighttime waking events. Data were analysed using SPSS version 23, and paired-sample t-tests and McNemar’s test were applied. A p-value <0.05 was considered statistically significant.
resultsA total of 150 patients were included with equal gender distribution (50% male, 50% female) and a mean body mass index (BMI) of 47.8 ± 8.5 kg/m². At baseline, all patients (100%) were diagnosed as having obstructive sleep apnoea (OSA) based on symptomology. All patients showed complete clinical improvement of OSA-related symptoms by 6 weeks, which persisted at the 3-month follow-up, as assessed by the study questionnaire. Marked reductions were also noted in loud snoring and daytime sleepiness. Furthermore, the average number of waking up events at night decreased significantly by 0.66 ± 2.12 events at six weeks and by 3.09 ± 1.89 events at three months postoperatively (p < 0.001).
conclusionsBariatric surgery showed significant improvement in sleep quality and led to marked clinical improvement and symptom-based remission of OSA-related manifestations within 3 months of follow-up
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