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Sleep Diagnosis and Therapy

Sleep Diagnosis and Therapy

Official Publication of the American Sleep and Breathing Academy

CPAP Linked to Improvement in Resistant Hypertension

November 8, 2013 by admin

A new report summarizes a small study in which researchers concluded that the use of CPAP in patients with resistant hypertension and OSA significantly lowered daytime blood pressure.

As originally reported in the November issue of CHEST, after 6 months of treatment, a randomized trial showed that those who received CPAP plus medical therapy had an average ambulatory blood pressure reduction of 6.5/4.5 mm Hg, compared with an average increase of 3.1/2.1 mm Hg for those who received medical therapy alone.

According to Geraldo Lorenzi-Filho, MD, PhD, of the Heart Institute at the Universidade de São Paulo, Brazil, and colleagues, the blood pressure changes occurred only when the patients were awake.

The article “Effects of OSA Treatment on BP in Patients With Resistant Hypertension:A Randomized Trial” stated the impact of CPAP on blood pressures in these patients with confirmed resistant hypertension and moderate-to-severe OSA was in the range of that expected from treating other causes of secondary hypertension.

Click to view Abstract

“The importance of our findings is highlighted by the fact that OSA is extremely common among patients with resistant hypertension and is largely underrecognized,” they wrote. “Future studies are necessary to clarify the impact of the treatment of OSA on other cardiovascular outcomes, such as target-organ damage, in patients with resistant hypertension.”

Based on prior research, the magnitude of blood pressure reduction achieved with CPAP in the trial would be expected to reduce cerebrovascular events by more than 30% and cardiovascular events by more than 20%, Malcolm Kohler, MD, of University Hospital Zurich, and John R. Stradling, MD, from the NIHR Biomedical Research Centre in Oxford, England, noted in an accompanying editorial.

Source: American College of Chest Physicians

Filed Under: Articles, Blog

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SleepDT Sleep Diagnosis and Therapy is a clinical Journal for allied Sleep Professionals, Neurologists, Psychiatrists, Pulmonologists, Primary Care Physicians, and other medical specialists. We also advocate on behalf of patient care in the field of Sleep Medicine

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