Open AccessDifferential effective refractory period as a useful marker of multiple accessory pathways
Author(s) -
Helm Robert H.,
Varkey Santosh C.,
Karnik Ankur A.
Publication year - 2019
Publication title -
journal of arrhythmia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.463
H-Index - 21
eISSN - 1883-2148
pISSN - 1880-4276
DOI - 10.1002/joa3.12162
Subject(s) - medicine , effective refractory period , refractory period , refractory (planetary science) , ablation , accessory pathway , supraventricular tachycardia , electrophysiology , catheter ablation , cardiology , tachycardia , differential diagnosis , pathology , physics , astrobiology
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.