Vein of Marshall Cannulation for the Analysis of Electrical Activity in Patients With Focal Atrial Fibrillation

Abstract

(1) It is possible to cannulate and to record electrical potentials from the VOM. (2) The characteristics of the double potentials within the VOM suggest that the second potential is from the muscle bundle (Marshall bundle) within the LOM. (3) The Marshall bundle may be the origin of focal AF in some patients.