Left ventricular endomyocardial biopsy guided by intracardiac echocardiography via a trans-septal approach.

A 29-year-old woman was referred to our hospital for catheter ablation (CA) due to symptomatic atrial fibrillation (AF), after two failed CA attempts at another hospital. She had presented with left ventricular dysfunction at the age of 1 year, with a suspected diagnosis of endocardial