Re-entry Via Mahaim Fibres As a Possible Basis for Tachycardia

Overview

Journal Br Heart J

Specialty Cardiology & Vascular Diseases

Date 1978 Jul 1

PMID 687479

Citations 2

Authors

P Touboul

R M Vexler

M T Chatelain

Affiliations

Soon will be listed here.

Abstract

Paroxysmal tachycardia with widened QRS complexes was recorded in a 21-year-old man. In sinus rhythm there was no evidence of pre-excitation. His bundle studies revealed an abnormally short HV interval of 30 ms. Premature atrial stimuli produced an increased PR interval. At short coupling intervals the His bundle activity became incorporated within the QRS complex. Concurrently, a left bundle-branch block pattern appeared identical to that seen during tachycardia. Closely coupled ventricular extrastimuli initiated a tachycardia identical to the initial episode. A re-entry mechanism via anterograde Mahaim fibres and retrograde His bundle -AV node pathway is postulated.

Citing Articles

Radiofrequency catheter ablation of Mahaim tachycardia by targeting Mahaim potentials at the tricuspid annulus.

Heald S, Davies D, Ward D, Garratt C, Rowland E Br Heart J. 1995; 73(3):250-7.

PMID: 7727185 PMC: 483807. DOI: 10.1136/hrt.73.3.250.

Mechanisms of junctional tachycardia showing ventricular pre-excitation.

Ward D, Bennett D, Camm J Br Heart J. 1984; 52(4):369-76.

PMID: 6477775 PMC: 481644. DOI: 10.1136/hrt.52.4.369.

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