Hemodynamic effects of differing pacemakers sites and demand pacemaking.
D000818:Animals; D001011:Aorta; D016275:Atrial Function; D001783:Blood Flow Velocity; D001794:Blood Pressure; D002302:Cardiac Output; D006439:Hemodynamics; D010138:Pacemaker, Artificial; D012756:Sheep; D016276:Ventricular Function