4.6 Article

Obstructive sleep apnea during REM sleep: effects on morning and evening blood pressure

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SLEEP
卷 46, 期 3, 页码 -

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OXFORD UNIV PRESS INC
DOI: 10.1093/sleep/zsac259

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obstructive sleep apnea; sleep-disordered breathing; rapid eye movement; blood pressure; hypertension

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Respiratory events during REM sleep are significantly associated with morning hypertensive blood pressure, while the relationship with evening hypertensive blood pressure is not significant. Age and BMI are independent factors influencing morning hypertension.
Study Objectives Obstructive sleep apnea (OSA) is linked to the emergence and progression of cardiovascular complications including hypertension, stroke, arrhythmias, coronary artery disease, and heart failure. Epidemiological studies have reported that hypertension is associated with respiratory events during REM sleep. We examined the relationship between respiratory events during REM and morning and evening hypertensive blood pressure (BP) levels in a clinical sleep population. Methods This study included data from in-laboratory diagnostic polysomnographic studies (n = 797) from adults attending for investigation of OSA. Hypertensive BP levels were defined using BP measurements taken in the evening before and morning after polysomnography, and the use of antihypertensive medication. Regression modeling was undertaken to examine the probability of evening and morning hypertensive BP levels according to REM apnea-hypopnea index (AHI), NREM AHI, gender, age, body mass index (BMI), alcohol use, total sleep time (TST), sleep time SpO(2) <90%, and smoking status. Results The probability of morning hypertensive BP levels was significantly independently associated with age (p < .001), BMI (p < .001), and REM AHI (p < .001). No significant effect was found for the male gender, NREM AHI, alcohol use, TST, sleep time SpO(2) <90%, or smoking (p > .05 for all). The probability of evening hypertensive BP levels was only significantly associated with age (p < .001), male gender (p = .012), BMI (p < .001), and TST (p = .032). Conclusions Respiratory events during REM sleep are significantly associated with morning hypertensive BP levels. Future research is needed to determine whether treatment of these events can prevent or reverse morning hypertensive BP levels.

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