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Postmenopausal African-American Women Face Heart Disease Danger During Sleep.(Brief Article)
2001 SEP 6 - (NewsRx Network) -- Postmenopausal African-American women whose blood pressure does not drop at night are at greater risk for cardiovascular disease than white women, according to a study in the August 2001 issue of the American Journal of Hypertension.
It is the first biracial study conducted in the United States to show the effects of ethnicity and menopause on blood pressure dipping in African-American women and white women of European descent.
Using ambulatory blood pressure monitoring, researchers from Duke University Medical Center, Durham, North Carolina, and the University of North Carolina, Chapel Hill, studied the effects of blood pressure dipping in 62 premenopausal and 50 postmenopausal women.
"Sherwood and colleagues found waking blood pressure levels were the same in both groups of women," said Michael A. Weber, MD, an editor of the American Journal of Hypertension. "However, blood pressure of the postmenopausal women showed less dipping or falling during sleep, with the African-American women showing even less of a blood pressure fall than the white women.
"The lack of blood pressure dipping may be a contributory factor to the high levels of cardiovascular morbidity and mortality in African-Americans," he noted. "The finding also demonstrates the importance and efficiency of automatic blood pressure measurements. It gives physicians a more complete picture of what happens to blood pressure throughout the entire day in each person."
Ambulatory monitoring uses a small noninvasive device and is worn by the patient to automatically measure blood pressure every few minutes for 24 hours or longer. Blood pressure is measured while the patient is working, relaxing, and sleeping to provide a full picture for the day.
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Source: HighBeam Research, Postmenopausal African-American Women Face Heart Disease Danger...