PURPOSE: The prevalence of sleep-disordered breathing (SDB) in elderly subjects in Southeast Asian countries is unknown. This study aimed to determine the symptoms and prevalence of SDB in the elderly Chinese population.
METHODS: We conducted a sleep questionnaire survey at the community elderly centers followed by random selection of elderly to undergo portable home sleep monitoring with the Embletta(tm) device (Portable Diagnostic System).
RESULTS: Results mean (SD): Altogether 790 subjects were interviewed with age of 74.0(7.5) years, BMI 24.3 (3.6) kg/m2, female to male ratio 3.95:1 and Epworth sleepiness score (ESS) 6.6 (5.1). Impaired performance ability was reported by 59.5%, daytime sleepiness 71.1%, snoring ≥ 3 nights per week 24.3%, witnessed apnea 2.2% and symptoms of restless leg syndrome 13.2%. Among 210 who underwent home sleep study, 146 (61.9%), 95 (40.3%), 64 (27.1%) and 41 (17.4%) had AHI ≥5, ≥10, ≥15 and ≥20/h respectively. Neck circumference and snoring frequency were the positive independent factors associated with the apnea-hypopnea index (AHI). Eighty-six subjects suffered from SDB which was defined as AHI ≥15/hr or AHI ≥5/hr with ESS ≥10.
CONCLUSION: The estimated minimum prevalence rate of significant sleep disordered breathing was 10.9% among the elderly Chinese in HK.
CLINICAL IMPLICATIONS: Given the high prevalence rate of sleep disordered breathing in Chinese elderly, future study is needed to address the effect of treatment on health outcomes in this population.
DISCLOSURE: Susanna Ng, No Financial Disclosure Information; No Product/Research Disclosure Information