Related Experiment Video
Updated: Dec 12, 2025

Chronic Ovine Model of Right Ventricular Failure and Functional Tricuspid Regurgitation
Published on: March 17, 2023
Mahaim fiber connecting the right atrium to the left ventricle: a case report
Daisuke Yakabe1, Yusuke Fukuyama1, Masahiro Araki1
1Department of Cardiology Clinical Research Institute National Hospital Organization Kyushu Medical Center Fukuoka City Japan.
Abstract:
In the majority of cases presenting with the Mahaim fiber (MF), the MF connects the lateral right atrium (RA) to the right bundle branch or the right ventricle. We present the case of a 33-year-old man with antidromic atrioventricular reentrant tachycardia using MF connected to the septal RA and left ventricle (LV). Although the Mahaim potential was recorded at the septal RA, ablation at this site could not eliminate the MF and had a potential risk of injury to the atrioventricular node. Additional application at the posterior septal LV achieved successful MF ablation.
Related Concept Videos
Cardiac Catheterization II: Right Heart Catheterization
Chambers of the Heart
Deoxygenated blood from the body is received in the right...
Mitral Regurgitation I: Introduction
Mitral Stenosis I: Introduction
Cardiomyopathy III: Hypertrophic Cardiomyopathy
Coronary Circulation
Coronary circulation begins at the base of the aorta, where two main arteries arise—the left and right coronary arteries. These arteries encircle the heart in the coronary sulcus and supply the...

