Patterns of Obstructive Sleep Apnea in Weight Loss Surgery and How It Changes After Adjustable Stomach Banding
Updated
Abstract
The prevalence of obstructive sleep apnoea (OSA) in severely obese Asians is high, with moderate OSA found in 46% and severe OSA in 33% of patients.
- Severe OSA is significantly more prevalent in Chinese patients (46%) compared to Malays (29%) or Indians (21%).
- Male sex, higher body mass index, and the presence of hypertension are associated with an increased risk of severe OSA.
- Weight loss of 20 kg is linked to a 50% improvement in the Apnoea Hypoapnoea Index (AHI) in preoperatively severe OSA cases.
- Improvements in desaturation events, apnoea episodes, work of breathing, and subjective sleepiness scores were observed, though not statistically significant.
- Weight loss also led to better sleep architecture, including increased rapid eye movement (REM) and stage 3 sleep.
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