DALLAS, Oct. 13 -- A new test that measures swings in heart rate during the day may help identify individuals with congestive heart failure who are at the highest risk of dying from the condition within a year, according to a study in today's Circulation: Journal of the American Heart Association. Congestive heart failure (CHF) occurs when the heart muscle becomes unable to pump enough blood to meet the needs of the body's other organs. The test measures heart rate variability (HRV), the amount by which the heart rate changes from slow rates to fast rates in one 24-hour period. "The less the heart rate varies over 24 hours, the more likely a person will die of congestive heart failure," says the study's lead author James Nolan, M.D., consultant cardiologist at the Cardiology Center, North Staffordshire Hospital in Staffordshire, England.
The above story is based on materials provided by American Heart Association. Note: Materials may be edited for content and length.
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