BLOOD PRESSURE CHANGES RELATED TO THE TREATMENT OF SLEEP APNEA SYNDROME.
Contributors: Rush University, College Of Nursing.
Published: 1988
Number of pages: 112
Subjects: Health Sciences, Nursing.; Biology, Neuroscience.; Psychology, Physiological.
Description: Recent investigations have documented the high incidence of sleep apnea syndrome in hypertensive populations (22% to 50%). This indicates that sleep apnea may be a significant clinical issue in the hypertensive population.

The aim of this study was to determine if patients suffering from both sleep apnea syndrome and essential hypertension will have significant reductions in their blood pressure following significant treatment for their sleep apnea syndrome. Significant apnea treatment was defined as a reduction of greater than or equal to a 50% reduction in the apnea plus hypopnea index during one night of post-treatment polysomnographic recording.

Beginning in April of 1987, the blood pressure of 14 male hypertensive or high normotensive (diastolic above 85 mmHg. and/or systolic above 135 mmHg.) sleep apnea subjects was recorded in four week intervals during the first twelve weeks of apnea treatment. In addition, variables such as age, weight, ETOH use, smoking habits, dietary changes, level of activity/exercise, current medications, level of anxiety and stressful life events were measured or controlled.

Following the twelve weeks of data collection, subjects were assigned to one of the four following groups: (1) those on antihypertensive pharmacologic therapy who had successful treatment of sleep apnea (n = 6); (2) those not on antihypertensives who had successful treatment for sleep apnea (n = 6); (3) those on antihypertensives who did not have a successful apnea treatment in the twelve week period (n = 0); and (4) those not on antihypertensives who were successfully treated for sleep apnea (n = 2).

In group number two, (no antihypertensives/successful treatment) four of the six subjects demonstrated a decrease in diastolic blood pressure over time. In addition, the prevalence of hypertension (23%-53%) in the sample closely mirrored that of previously reported data. In one subject, weight loss was found to be the critical variable responsible for reducing both apneic events and blood pressure. It is recommended that future studies on this topic consider a controlled phase-out of antihypertensive therapy before apnea treatment is begun.
Notes: Source: Dissertation Abstracts International, Volume: 50-04, Section: B, page: 1323.

Thesis (D.N.SC.)--RUSH UNIVERSITY, COLLEGE OF NURSING, 1988.

School code: 0591.