Spikes in blood pressure could signal future trouble

June 30, 2009 A new study looked at this so-called "white coat" hypertension as well as "masked" hypertension.

Earlier studies have been inconclusive. This study in the journal Hypertension found that almost 43 percent of those with white coat hypertension and 47 percent of those with masked hypertension had high blood pressure 10 years later.

This is the first to demonstrate those sporadic spikes result in greater long-term risk of developing sustained hypertension. That's a major risk factor for heart attack and stroke.

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