They also used an automatic analyzer that discarded arrythmias and determined variability in the heart rate. Researchers followed the group for a little over one year. During that time fifty four patients died. Patients with the least variability were three times more likely to die than those with the greatest. There is hope for patients whose heart rates have little variability.
Exercise can also improve heart rate variability.
Previous studies have shown that heart-attack patients are also more likely to die if they have a low heart rate variability soon after a heart attack. Sources American Heart Association Journal Report, Oct. 12, 1998. All rights reserved. Before accessing or using HeartInfo, please read our Disclaimer and Privacy Policy . By using or accessing HeartInfo, you agree to be bound by the terms of the Disclaimer .