Authors: Junaid Malik Christopher L Drake David W Hudgel
Publish Date: 2007/11/09
Volume: 12, Issue: 1, Pages: 47-52
Abstract
We hypothesized that an improvement in systemic blood pressure BP during continuous positive airway pressure CPAP treatment of obstructive sleep apnea OSA would be related to severity of hypertension HTN morphometric parameters such as body mass index and level of CPAP adherence We tested this hypothesis with a retrospective review of 85 consecutive OSA patients who had completed diagnostic and CPAP titration polysomnograms and were equipped with a CPAPadherence monitoring system for a minimum of 1 month of observation Sphygmomanometerobtained BP readings were compared at baseline and after 4–6 weeks of CPAP therapy Presentation BP was significantly and strongly associated with the change in BP seen with treatment Those with an elevated systolic and diastolic BP and those with an elevation of either systolic or diastolic BP showed a significant fall in BP on CPAP Those with a BP below the hypertensive range of 140/90 on presentation did not have a significant drop in BP with CPAP There were no significant changes in systolic diastolic or mean BP when patients were categorized by the severity of HTN as determined by the number of antihypertensive medications prescribed or if they were categorized by the degree of CPAP adherence objectively determined by the average use of more or less than 4 h/night We conclude that HTN at initial presentation is among the most important indicators of potential benefit of CPAP administration on BP
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