'Broken heart' syndrome: Real, potentially deadly but recovery quick

Shocking news, such as learning of the unexpected death of a loved one, has been known to cause catastrophic events, such as a heart attack.

Now, researchers at Johns Hopkins have discovered that sudden emotional stress can also result in severe but reversible heart muscle weakness that mimics a classic heart attack. Patients with this condition, called stress cardiomyopathy but known colloquially as "broken heart" syndrome, are often misdiagnosed with a massive heart attack when, indeed, they have suffered from a days-long surge in adrenalin (epinephrine) and other stress hormones that temporarily "stun" the heart.

"Our study should help physicians distinguish between stress cardiomyopathy and heart attacks," says study lead author and cardiologist Ilan Wittstein, M.D., an assistant professor at The Johns Hopkins University School of Medicine and its Heart Institute. "And it should also reassure patients that they have not had permanent heart damage."

In the Hopkins study, to be published in The New England Journal of Medicine online Feb. 10, the research team found that some people may respond to sudden, overwhelming emotional stress by releasing large amounts of catecholamines (notably adrenalin and noradrenalin, also called epinephrine and norepinephrine) into the blood stream, along with their breakdown products and small proteins produced by an excited nervous system. These chemicals can be temporarily toxic to the heart, effectively stunning the muscle and producing symptoms similar to a typical heart attack, including chest pain, fluid in the lungs, shortness of breath and heart failure.

Upon closer examination, though, the researchers determined that cases of stress cardiomyopathy were clinically very different from a typical heart attack.

"After observing several cases of 'broken heart' syndrome at Hopkins hospitals - most of them in middle-aged or elderly women - we realized that these patients had clinic

Contact: David March
Johns Hopkins Medical Institutions

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