Chronotropic cardiomyopathy

more commonly known as tachycardia induced cardiomyopathy or tachycardiomyopathy.

This is a weakening of the heart caused by a long period of rapid heart rate

See also cardiomyopathyand congestive heart failure

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It uses material from the http://en.wikipedia.org/wiki/Chronotropic+cardiomyopathy Wikipedia article Chronotropic cardiomyopathy.