Electroanatomic localization of a slowly conducting atrioventricular (Mahaim) accessory pathway.
We present a case of a 34-year-old female with Ebstein's anomaly and symptomatic wide complex tachyarrhythmia. Electrophysiologic evaluation demonstrated antidromic tachycardia utilizing a right-sided decremental, slowly conducting atrioventricular pathway. Distinct accessory pathway potentials along the length of the bypass tract were sequentially recorded to define the anatomic course of the pathway, as uniquely represented on a three-dimensional electroanatomic map, and to successfully guide catheter ablation.
Gupta
Anurag
A
Division of Cardiology, Department of Internal Medicine, Stanford University School of Medicine, Stanford, CA, USA. agupta@cvmed.stanford.edu
Hsia
Henry H
HH
Lo
Ronald
R
Zei
Paul C
PC
D058606:Accessory Atrioventricular Bundle / Q000473:pathology; D000328:Adult; D018780:Body Surface Potential Mapping / Q000379:methods*; D017115:Catheter Ablation / Q000379:methods*; D004437:Ebstein Anomaly / Q000150:complications* / Q000175:diagnosis; D004562:Electrocardiography / Q000379:methods; D022062:Electrophysiologic Techniques, Cardiac / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D011227:Pre-Excitation, Mahaim-Type / Q000175:diagnosis* / Q000601:surgery; D018570:Risk Assessment; D013997:Time Factors; D016896:Treatment Outcome