Simultaneous right and left ventricular pacing was performed in a 73-y
ear-old man with coronary artery disease end-stage congestive heart fa
ilure and a DDD pacemaker implanted for sick sin us syndrome. An endoc
ardial LV lead rt as introduced transseptally after unsuccessful attem
pts to enter the coronary sinus. This new approach for multisite pacin
g offers an alternative to epicardial LV from the coronary sin us or b
y thoracotomy.