Int J Arrhythm.  2017 Sep;18(3):151-154. 10.18501/arrhythmia.2017.025.

Preexcitation Syndrome with a Mahaim-type Accessory Pathway

• Lee KN
• Kim YH

• KMID: 2395803
• DOI: http://doi.org/10.18501/arrhythmia.2017.025

Abstract

Wide QRS complex tachycardia with a left bundle branch block pattern can be caused by supraventricular tachycardia with aberrant conduction, preexcitation syndrome mediated through a right-sided accessory pathway, and/or ventricular tachycardia. The use of atrial pacing maneuvers can be beneficial for unmasking minimal preexcitation to differentiate between these conditions. Here, we report a case of successful radiofrequency catheter ablation of a Mahaim fiber in a patient with wide QRS complex tachycardia.

Keyword

Mahaim Fiber; Wide QRS complex Tachycardia; Left Bundle Branch Block; Preexcitation Syndrome

MeSH Terms

Bundle-Branch Block
Catheter Ablation
Humans
Pre-Excitation Syndromes*
Tachycardia
Tachycardia, Supraventricular
Tachycardia, Ventricular