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Differential effective refractory period as a useful marker of multiple accessory pathways.

ABSTRACT: Accessory pathway (AP) ablation failure may be related to multiple pathways which go unrecognized at the time of electrophysiology study. We present a patient who had two adjacent APs based on different preexcitation patterns as well as effective refractory periods (ERPs) which have not been previously described. Apart from leading to recurrent supraventricular tachycardia (SVT), multiple pathways are important to recognize as they more frequently predispose to malignant atrial arrhythmias.

SUBMITTER: Helm RH

PROVIDER: S-EPMC6457381 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature

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Differential effective refractory period as a useful marker of multiple accessory pathways.

Helm Robert H RH Varkey Santosh C SC Karnik Ankur A AA

Journal of arrhythmia 20190201 2

Accessory pathway (AP) ablation failure may be related to multiple pathways which go unrecognized at the time of electrophysiology study. We present a patient who had two adjacent APs based on different preexcitation patterns as well as effective refractory periods (ERPs) which have not been previously described. Apart from leading to recurrent supraventricular tachycardia (SVT), multiple pathways are important to recognize as they more frequently predispose to malignant atrial arrhythmias. ...[more]

PMID: 31007797

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