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Bradycardia-induced cardiomyopathy |
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Abstract Not only persistent or recurrent tachycardia, but also long-lasting bradyarrhythmia can induce cardiomyopathy. Its pathogenesis is not clear, which is possibly related to significantly prolonged ventricular diastole, overloaded volume, loss of atrioventricular sequential contraction, changes of ventricular activation sequence, heterogeneity of ventricular contraction, and myocardial hypoperfusion, etc. Diagnosis of the disease is mainly based on a medical history of bradycardia, cardiac dilatation, and cardiac functional insufficiency. By cardiac pacemaker(especially three-chamber pacemaker) therapy, heart function can be back to normal.
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Received: 10 December 2014
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