Abstract

Objective To evaluate the efficacy of intravenous recombinant human brain natriuretic peptide in acute anterior myocardial infarction complicated with heart failure.Methods Two hundred patients suffered from acute anterior myocardial infarction complicated with heart failure were randomly divided into two groups:rhBNP group ( n =100) and control group ( n =100 ).All patients were given conventional treatment,patients in rhBNP group were given rhBNP on the basis of conventional therapy.The clinical effectiveness including the improvement of cardiac function,cardiac ultrasound data,the incidence of hospital adverse cardiac events,and six month follow-up were compared between the two groups.Results The degree of decompensation and Killip class in rhBNP group were better than those of control group after treatment ( improved dyspnea:significantly improved:36 vs 27 ; improved:49 vs 46; no improvement:11 vs 20 ; deterioration:4 vs 7 ; Ridit value:0.4618 vs 0.5382,P =0.043) ( Killip class:significantly improved:26 vs 20; improved:56 vs 45; no improvement:14 vs 25 ; deterioration:4 vs 10; Ridit value:0.4553 vs 0.5447,P =0.017 ).After treatment for one week,The LVEF improvement in rhBNP group was more remarkable than that of control group ( [ 53.0 ± 5.2 ] ％vs.[ 50.0 ±:6.2 ] ％,P =0.014).The occurrence rate of angina ( 13.0％ vs.27.0％,P =0.013 ),heart failure ( 18.0％ vs.32.0％,P =0.022) and major adverse cardiac events(MACE) ( 17.0％ vs.30.0％,P =0.030) inrhBNP group was lower than that in control group.During 6 months follow-up period,event-free survival in rhBNP group was higher than that in control group ( 69.0％ vs.55.0％,P =0.041 ).Conclusion Transvenous injection of rhBNP combined with other routine treatment can improve cardiac function in patients with myocardial infarction in acute anterior myocardial infarction.It can also decrease adverse cardiac events during hospitalization and increase event-free survival in 6 months follow-up period. Key words: Myocardial infarction; Heart failure,congestion; Recombinant human brain natriuretic peptide; Prognosis

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