LV dysfunction
LV pressure-volume       data and myocardial oxygen consumption (MVO2) was assessed using conductance and        coronary sinus thermodilution catheters in 14 patients with moderate LV       dysfunction (mean ejection fraction 34%) under 3 conditions: (a) basal, (b) HR       increased by 20% using atrial pacing, and (c) HR decreased by 16% using a       specific bradycardic agent, zatebradine (7.5 mg p.o.).
LV pressure-volume       data and myocardial oxygen consumption (MVO2) was assessed using conductance and        coronary sinus thermodilution catheters in 14  @OBJECT$   @PREDICAT$  moderate  @SUBJECT$  (mean ejection fraction 34%) under 3 conditions: (a) basal, (b) HR       increased by 20% using atrial pacing, and (c) HR decreased by 16% using a       specific bradycardic agent, zatebradine (7.5 mg p.o.).