ABSTRACT
Objective To explore the value of plasma brain natriuretic peptide test in the diagnosis and treatment of elderly heart failure patients with normal ejection fraction,and to provide reference for clinical diagnosis and treatment of the disease.Methods 104 patients with heart failure were selected,at the same time,30 elderly patients with normal heart function in our hospital were selected as the control group.The plasma brain natriuretic peptide and cardiac color Doppler ultrasound were examined.The plasma brain natriuretic peptide and left ventricular ejection fraction,left ventricular posterior wall thickness,left ventricular mass index,left ventricular diastolic diameter and ventricular septal thickness were compared between two groups ; at the same time,peptide and left ventricular plasma brain natriuretic ejection fraction were compared in heart failure patients with different levels of NYHA.Results The plasma level of brain natriuretic peptide,left ventricular posterior wall thickness,left ventricular mass index in the heart failure group were (401.37 ± 368.63) ng/L,(13.42 ± 1.33) mm,(130.62 ± 9.18) g/m2,which were significantly higher than those of the control group (all P ＜ 0.05).The left ventricular ejection fraction of the heart failure group was (51.36 ±4.41) ％,which was significantly lower than the control group(P ＜0.05).The left ventricular ejection fraction of patients with different NYHA grading in the heart failure group was significantly lower than that of the control group(all P ＜0.05),plasma brain natriuretic peptide levels in patients with different NYHA grading were significantly higher than those in the control group,and with the elevated levels of NYHA classification,the plasma brain natriuretic peptide level increased significantly(P ＜ 0.05).Conclusion The level of plasma brain natriuretic peptide in elderly heart failure patients with normal ejection fraction was significantly increased,and with the increase of NYHA grade,plasma brain natriuretic peptide level rised,it is important to assess diagnosis and severity of this disease.