Hyperpolarization activated cation current (<I>I</I><SUB>f</SUB>) in cardiac myocytes from pulmonary vein sleeves in the canine with atrial fibrillation

Abstract

The spontaneous action potential and larger I(f) current were observed in the PVs cardiac myocytes using RAP, which may contribute to more ectopic activity events to trigger and maintain atrial fibrillation.