Mahaim type preexcitation
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Mahaim type pre-excitation is a form of ventricular pre-excitation characterized by a normal PR interval and a long QRS interval with initial slurring of or slow deflection of the QRS complex (a delta wave is present).[1] [2] [3]
Pathophysiology
In Mahaim type pre-excitation, the atrial impulse travel to the ventricle via the Mahaim fibers which connect atrioventricular node directly to the right ventricular wall (nodoventricular pathway) or to the right bundle branch of His (nodofascicular pathway)
References
- ↑ Sternick EB. Mahaim Fibre Tachycardia: Recognition and Management, Indian Pacing Electrophysiol J. 2003 Apr–Jun; 3 (2): 47–59.
- ↑ Hanon S, Shapiro M, Schweitzer P. Early history of the pre-excitation syndrome, Europace (2005) 7, 28-33.
- ↑ Silva MA, Berardi G, Kraemer A, Nadalin E, Jorge JCM, Catheter Ablation of Atriofascicular Mahaim Fibers Guided by the Activation Potential, Arq Bras Cardiol, volume 80 (no 1), 66-70, 2003.