Key result
Radiofrequency catheter ablation successfully eliminated idiopathic mitral annular PVCs exhibiting a single origin with multiple breakouts and preferential conduction.
Case Report (n=1)
This case demonstrates that mitral annular PVCs can originate from a single site with multiple breakouts and preferential conduction, which may be unmasked during radiofrequency ablation.
Ablation success in mitral annular PVCs with single origin and multiple breakouts; leaves open prevalence and optimal strategies in larger cohorts.
A 39-year-old man with idiopathic monomorphic premature ventricular contractions (PVCs), exhibiting a right bundle branch block and inferior axis QRS morphology, underwent electrophysiological testing. After a radiofrequency (RF) application to the anterior mitral annulus (MA) eliminated the spontaneous PVC morphology, a second PVC morphology occurred. Pacing from the first ablation site exhibited an excellent match to the second PVCs with a long stimulus to QRS interval. An RF application delivered near the first lesion eliminated all PVCs. The MA PVCs in this case exhibited a single origin with multiple breakouts and preferential conduction that were unmasked by RF ablation.
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Yamada et al. (2010) conducted a case report in Idiopathic monomorphic premature ventricular contractions (n=1). Radiofrequency catheter ablation was evaluated on Elimination of PVCs. Radiofrequency catheter ablation successfully eliminated idiopathic mitral annular PVCs exhibiting a single origin with multiple breakouts and preferential conduction.
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