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    Too Few Americans Aware of Their High BP: Study

    Researchers looked at nearly 70,000 adults in southeastern U.S.

    WebMD News from HealthDay

    By Kathleen Doheny

    HealthDay Reporter

    MONDAY, Dec. 23, 2013 (HealthDay News) -- High blood pressure is a preventable and treatable risk factor for heart attack and stroke, but about one-quarter of adults don't know they have it, according to a large new study.

    Among those who do know they have the condition, many are not likely to have it under control, said lead researcher Dr. Uchechukwu Sampson, a cardiologist at Vanderbilt University Medical School in Nashville.

    "Despite all the progress we have made in having available treatment options, more than half of the people we studied still have uncontrolled high blood pressure," Sampson said.

    The study is published in the January issue of the journal Circulation: Cardiovascular and Quality Outcomes.

    One in three U.S. adults has high blood pressure, according to the U.S. National Heart, Lung, and Blood Institute. Any reading over 140/90 millimeters of mercury is considered high blood pressure.

    The study findings coincided with the Dec. 18 issuing of new guidelines for blood pressure management by experts from the institute's eighth Joint National Committee.

    Among other changes, the new guidelines recommend that fewer people take blood pressure medicine. Older adults, under the new guidelines, wouldn't be treated until their blood pressure topped 150/90, instead of 140/90.

    In Sampson's study, the researchers evaluated how common high blood pressure was in more than 69,000 men and women. Overall, 57 percent self-reported that they had high blood pressure.

    "Among those who reported a history of high blood pressure, more than half of blacks and nearly half of whites had uncontrolled blood pressure," Sampson said. "Among those who did not report a history of high blood pressure, nearly a third of blacks and nearly a quarter of whites had high blood pressure but were unaware of it."

    The men and women on medications were not likely to be taking drugs considered first-line treatments, the researchers found. This suggests that doctors and patients aren't following medical guidelines on which drugs to use first and when to add more drugs to further manage blood pressure.

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