Janssen Pharmaceuticals Inc. and its development partner Bayer HealthCare announced results from the VENTURE-AF trial. The study explored the potential of once-daily Xarelto (rivaroxaban) as an alternative to vitamin K antagonists (VKA), used to reduce the risk of blood clots, in people with non-valvular atrial fibrillation (NVAF) undergoing catheter ablation, a frequently used interventional procedure to remove abnormal tissue in the heart that is causing the irregular heartbeat. The results were presented at Heart Rhythm 2015, the Heart Rhythm Society's 36th annual scientific sessions, and published in the European Heart Journal.