Short-term variability of blood pressure during sleep in snorers with or without apnea

Hypertension
M LeroyA Foucher

Abstract

In normal subjects, the level and variability of blood pressure decrease during non-rapid eye movement (non-REM) sleep. In contrast, sleep apnea is associated with large swings in nocturnal pressure. In this study, we evaluated a computer-derived index of all-night blood pressure variability in normotensive snorers with or without sleep apnea. We also examined this index in snorers receiving medical treatment for coexistent ischemic heart disease. Beat-to-beat blood pressure was recorded with a photoplethysmographic device (Finapres) throughout polysomnography. Subjects were categorized into four groups: those without cardiovascular disease without or with sleep apnea (> or = 15 apnea plus hypopnea per hour of sleep), and those with ischemic heart disease without or with sleep apnea. A frequency distribution histogram of all increases and decreases of blood pressure according to their amplitudes was drawn and the SD of the distribution used as an estimation of variability. Mean systolic and diastolic pressures during the total sleep time were not different among the four groups. In contrast, the SD of the distribution of systolic and diastolic pressure variations that were higher in the apneic than in the nonapneic groups (P < ...Continue Reading

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Citations

Aug 7, 2007·Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie·Sarper KarakucukKoray Gumus
Aug 4, 2001·Autonomic Neuroscience : Basic & Clinical·K Narkiewicz, V K Somers
Dec 1, 2007·Néphrologie & thérapeutique·Arlette Foucher
Jan 25, 2012·Pacing and Clinical Electrophysiology : PACE·Andreas VossHans R Figulla
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Apr 17, 2014·Respiratory Medicine·Christoph SchöbelThomas Penzel
Nov 5, 2016·The Journal of Clinical Hypertension·Martino F PengoJoerg Steier
Apr 2, 2020·Frontiers in Physiology·Richard StaatsCristina Bárbara
Sep 13, 2018·Hypertension Research : Official Journal of the Japanese Society of Hypertension·Yasuo KansuiTakanari Kitazono
Dec 20, 2019·Blood Pressure Monitoring·Younghoon KwonDavid A Calhoun

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