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News - Central Valley General Hosp, Hanford California USA |
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| Central Valley General Hosp |
| Temporary blood pressure spikes may signal greater risk later |
| Date : - 30/06/2009 |
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June 30, 2009—Two conditions marked by sporadic high blood pressure may increase a person’s risk of developing sustained high blood pressure 10 years later, according to a study in Hypertension: Journal of the American Heart Association.
The conditions include:
* White-coat hypertension, a problem in which blood
pressure is high at the doctor’s office, but normal
at other times.
* Masked hypertension, a problem in which blood
pressure is normal at the doctor’s office, but
sporadically high in other situations.
The study involved 1,412 people between the ages of 25 and 74. Blood pressure levels were gathered in three ways: through initial measurements taken by researchers, through home measurements taken sporadically by the participants and through the use of an automated monitor that took measurements every 20 minutes during a 24-hour period.
Blood pressure levels were tested at the beginning of the study and again 10 years later
The researchers sought to determine how many people originally classified as having normal blood pressure, white-coat hypertension and masked hypertension eventually developed sustained high blood pressure.
They found that 18.2 percent of those with normal blood pressure readings developed hypertension within 10 years. But 42.6 percent of those with white-coat hypertension and 47.1 percent of those with masked hypertension went on to be diagnosed with full-fledged high blood pressure.
After controlling for other factors, researchers found that the risk of developing sustained high blood pressure was 2.51 times higher in people with white-coat hypertension and 1.78 times higher in people with masked hypertension.
Researchers said the findings suggest a role for home blood pressure monitoring and help shed light on whether white-coat hypertension and masked hypertension are truly dangerous—something that’s been debated for some time.
“Earlier studies, all with shorter follow-up than this one, have been inconclusive,” said lead author Giuseppe Mancia, MD. “This study is the first demonstration that white-coat hypertension and masked hypertension result in greater long-term risk of developing sustained hypertension, a major risk factor for heart attack and stroke. This means that these conditions are by no means clinically innocent, as they have often been thought to be.”
An accompanying editorial said that determining who is most likely to move toward more dangerous blood pressure readings will be experts’ next challenge.
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| Reference : - www.adventisthealthcv.com/ |
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