Karen A Matthews1, Yuefang Chang2, Howard M Kravitz3, Joyce T Bromberger4, Jane F Owens5, Daniel J Buysse5, Martica H Hall6. 1. Department of Psychiatry, University of Pittsburgh, PA, United States; Department of Epidemiology, University of Pittsburgh, PA, United States; Department of Psychology, University of Pittsburgh, PA, United States. Electronic address: matthewska@upmc.edu. 2. Department of Neurological Surgery, University of Pittsburgh, PA, United States. 3. Department of Psychiatry, Rush University Medical Center, Chicago, IL, United States; Department of Preventive Medicine, Rush University Medical Center, Chicago, IL, United States. 4. Department of Psychiatry, University of Pittsburgh, PA, United States; Department of Epidemiology, University of Pittsburgh, PA, United States. 5. Department of Psychiatry, University of Pittsburgh, PA, United States. 6. Department of Psychiatry, University of Pittsburgh, PA, United States; Department of Psychology, University of Pittsburgh, PA, United States.
Abstract
OBJECTIVE: Inadequate self-reported sleep is related to high blood pressure (BP). Our study investigated cross-sectional and longitudinal relationships between poor sleep measured by in-home polysomnography (PSG) and BP. METHODS: Midlife participants (132 black, 164 white, and 59 Chinese) were from the SWAN (Study of Women's Health Across the Nation) ancillary sleep study. In-home PSG measured sleep apnea, duration, efficiency, and electroencephalogram (EEG) total delta and beta power during nonrapid eye movement (NREM) sleep. Women subsequently were followed annually for 4.5 (1-7)years for BP and hypertensive status (>140/90 mmHg or use of antihypertensive medication). Covariates were age, race, site, and educational attainment, with time-covariates of BP medications, body mass index, diabetes mellitus (DM), cigarette smoking, and menopausal status. RESULTS: Sleep duration and efficiency were unrelated to BP cross-sectionally or longitudinally in multivariate models. Women with higher total beta power were more likely to be hypertensive at the time of the sleep study; women with lower total delta power were more likely to show increases in diastolic BP (DBP) and to be at risk for incident hypertension across follow-up. CONCLUSIONS: Low NREM delta power may be a risk factor for future hypertension. Quantitative EEG measures are worthy of future investigations of hypertension risk.
OBJECTIVE: Inadequate self-reported sleep is related to high blood pressure (BP). Our study investigated cross-sectional and longitudinal relationships between poor sleep measured by in-home polysomnography (PSG) and BP. METHODS: Midlife participants (132 black, 164 white, and 59 Chinese) were from the SWAN (Study of Women's Health Across the Nation) ancillary sleep study. In-home PSG measured sleep apnea, duration, efficiency, and electroencephalogram (EEG) total delta and beta power during nonrapid eye movement (NREM) sleep. Women subsequently were followed annually for 4.5 (1-7)years for BP and hypertensive status (>140/90 mmHg or use of antihypertensive medication). Covariates were age, race, site, and educational attainment, with time-covariates of BP medications, body mass index, diabetes mellitus (DM), cigarette smoking, and menopausal status. RESULTS: Sleep duration and efficiency were unrelated to BP cross-sectionally or longitudinally in multivariate models. Women with higher total beta power were more likely to be hypertensive at the time of the sleep study; women with lower total delta power were more likely to show increases in diastolic BP (DBP) and to be at risk for incident hypertension across follow-up. CONCLUSIONS: Low NREM delta power may be a risk factor for future hypertension. Quantitative EEG measures are worthy of future investigations of hypertension risk.
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