Right ventricular pacing may cause acute heart failure in adults with congenital complete heart block, suggesting synchronous biventricular pacing might be preferable in this population.
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May warrant RV pacing caution in congenital complete heart block; hypothesis-generating for biventricular preference, needing prospective confirmation.
A case of an adult patient with congenital complete heart block is reported in whom acute heart failure followed pacemaker implantation. It is uncertain whether the associated cardiomyopathy was present since birth, although right ventricular pacing was probably responsible for further deterioration of myocardial function. Synchronous pacing of both ventricles might be recommended in these patients.
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Dolara et al. (2008) studied this question.
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