Johnson & Johnson Medical Devices Companies* today announced that Biosense Webster, Inc.’s QDOT MICRO, a novel catheter that facilitates high power-short duration radiofrequency (RF) ablation, demonstrated safety and efficacy in achieving pulmonary vein isolation in patients with symptomatic drug-refractory paroxysmal atrial fibrillation (AF) in QDOT-FAST,** the first in-human multicenter study of the device