Atrial Fibrillation: Treatable HCM Complication

Updated to include editorial by Dr. Paolo Spirito in recent issue of Circulation.

HCM Beat

A recent paper by doctors at Tufts University’s HCM Center found that transient episodes of atrial fibrillation (AF) are treatable and do not often progress to permanent AF.

This study found that AF was not a frequent cause of death by heart failure or sudden cardiac arrest.  However, the researchers identified AF as an important cause of stroke in HCM patients.  Therefore, they recommend a low threshold for starting HCM patients on anti-coagulants following an initial AF episode.

Researchers in this study analyzed statistics from 1558 HCM patients, 20% of whom experienced AF.  74% experienced only sporadic episodes, while 26% went on to develop permanent AF.

At the time of publication, 91% of the 277 of the patients included in the sample were still alive and between the ages 49 and 75 years old.

According to an accompanying editorial by Italian HCM expert Dr. Paolo Spirito, the outlook for HCM…

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