Effects of metoprolol CR in patients with ischemic and dilated cardiomyopathy -: The randomized evaluation of strategies for left ventricular dysfunction pilot study

被引:192
作者
Cirillo, W [1 ]
Decanini, R [1 ]
Coelho, OR [1 ]
Avezum, A [1 ]
Peixoto, MSP [1 ]
Piegas, LS [1 ]
Neto, JMR [1 ]
Paiva, M [1 ]
Carvalho, AC [1 ]
de Almeida, DR [1 ]
Fernandes, IML [1 ]
Malavasi, MC [1 ]
Pavanello, R [1 ]
Canesin, M [1 ]
Ishii, S [1 ]
Barretto, ACP [1 ]
Imrie, J [1 ]
Moore, R [1 ]
Woo, K [1 ]
Bernstein, V [1 ]
Mizgala, HF [1 ]
Mooney, S [1 ]
Hilbich, D [1 ]
Kuritzky, R [1 ]
Rupka, DW [1 ]
Blackwell, MM [1 ]
Breakwell, L [1 ]
Kornder, JM [1 ]
Pearce, SA [1 ]
Polasek, P [1 ]
Richardson, PM [1 ]
Grant, J [1 ]
Isaac, D [1 ]
Beresford, P [1 ]
Giannoccaro, P [1 ]
Roth, D [1 ]
Greenwood, P [1 ]
Muzyka, T [1 ]
Prosser, A [1 ]
Brass, N [1 ]
Hui, W [1 ]
Kvill, L [1 ]
Goeres, M [1 ]
MacDonald, K [1 ]
Senaratne, M [1 ]
Hill, L [1 ]
Humen, D [1 ]
Teo, KK [1 ]
Habib, N [1 ]
Habib, N [1 ]
机构
[1] McMaster Clin, Canadian Cardiovasc Collaborat, Project Off, Hamilton, ON L8L 2X2, Canada
关键词
heart failure; receptors; adrenergic; beta; hormones; ventricles;
D O I
10.1161/01.CIR.101.4.378
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Background-Metoprolol provides clinical benefits in patients with congestive heart failure (CHF). in this study, we investigated the effects of controlled-release metoprolol (metoprolol CR) on clinical status, on left ventricular (LV) volumes and function, and on neurohumoral activation in a large number of patients with CHF of mixed causes. Methods and Results-Four hundred twenty-six patients with symptomatic CHF were randomized to receive metoprolol CR or placebo for 24 weeks. Metoprolol CR did not affect 6-minute walk distance, New York Heart Association functional class, or quality of life. However, there was a significant improvement in measures of LV function with an attenuation in the increase in LV end-diastolic (+23 +/- 65 mL [placebo] versus +6 +/- 61 mL, P = 0.01) and LV end-systolic (+19 +/- 55 mL [placebo] versus -2 +/- 51 mL, P < 0.001) volumes after 24 weeks of therapy. LV ejection fraction was unchanged (-0.05% or -0.005) in the placebo group but increased by 2.4% in the metoprolol CR-treated patients (P = 0.001). Patients receiving metoprolol CR had a greater decrease in angiotensin II (P = 0.036) and renin (P = 0.032) levels bur an increase in N-terminal atrial natriuretic peptide and brain natriuretic peptide levels (P < 0.01). There were fewer deaths in the group receiving beta-blockers (3.4% versus 8.1%), and there was a similar number of patients experiencing the composite outcomes of death or any hospitalization. Conclusions-When added to ACE inhibitors, angiotensin II receptor antagonists, or both, the use of metoprolol CR improves ventricular function, reduces activation of the renin-angiotensin systems, and results in fewer deaths.
引用
收藏
页码:378 / 384
页数:7
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