2[2]MERIT-HF Study Group.Effect of metoprolol CR/XL in chronic heart failure:Metoprolol CR/XL randomised intervention trial in congestive heart failure(MERIT-HF).Lancet,1999,353(9169):2001
3[3]Constant J.A review of why and how we may use β-blockers in congestive heart failure.Chest,1998,113(3):800-808
4[4]Elkayam U.Calcium Channel blockers in heart failare.Cardiology,1998,89(Suppl):38-46
5[5]Figulla HR,Gietzen F,Zeymer U,et al.Diltiazem improves cardiac function and exercise capacity in patients with idiopathic diated cardiomyopathy:results of the diltiazem in dilated cardiomyopathy trial. Circulation,1996,94(3):346-352
6[6]Packer M,Oconnor CM,Ghali JK,et al.Effect of amlodipine on morgidity and mortality in severe chronic heart failure:prospective randomized amlodipine survival evaluation study group.N Engl J Med,1996,335(15):1107-1114
7[7]Zhang X,Hintze TH.Amlodipine releases nitric oxide from canine coronary microvessels:an unexpected mechanism of action of a calcium channel-blocking agent.Circulation,1998,97(6):576-580
8[8]Quaife RA,Gilbert EM,Christian PE,et al.Effects of carvedilol on systolic and diastolic left ventricular performance in idiopathic dilated cardiomyopathy or ischemic cardiomyopathy.Am J Cardiol,1996,78(7):779-784
9[9]Gilbert EM,Abraham WT,Olsen S,et al.Comparative hemodynamic,left ventricular functional,and antiadrenergic effects of chronic treatment with metoprolol versus carvedilol in the failing heart.Circulation,1996,94(11):2817-2825