Journal
ACTA OTO-LARYNGOLOGICA
Volume 123, Issue -, Pages 41-45Publisher
TAYLOR & FRANCIS AS
DOI: 10.1080/0365523031000062
Keywords
apnea-hypopnea index; posture during sleeping; sleep apnea syndrome
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The relationship between sleep apnea syndrome (SAS) and posture during sleep has been noted and the beneficial effect of an optimal posture on sleep apnea has been empirically indicated. We investigated this effect in a group of subjects that included obese patients and found that the apnea-hypopnea index (AHI) may be normalized in the lateral position, even among patients severely affected with apnea. Among those with intermediate or lower AHI values, sleeping in a lateral position markedly improved the symptoms, with AHI even approaching the normal range in many patients. A tendency was noted for AHI to rise regardless of posture but in proportion to the increase in body mass index (BMI). In other words, the improvement due to changes in posture became increasingly insignificant with increase in BMI.
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