The induction of right ventricular outflow tract tachycardia in a patient with mitral valve prolapse suggests that the association between ventricular arrhythmias and mitral valve prolapse may not always be causal.
A patient with mitral valve prolapse and symptomatic ventricular ectopy underwent an electrophysiological study during which a sustained monomorphic ventricular tachycardia with a left bundle branch block/right axis deviation morphology was induced. This morphology was replicated by pace mapping at the right ventricular outflow tract. To the best of our knowledge, this finding has not been previously described and suggests that the association between ventricular arrhythmias and mitral valve prolapse may not necessarily be causal.
Kosmas et al. (Mon,) studied this question.