Left ventricular dysfunction, natriuretic peptides, and mortality in an urban population

被引:214
作者
McDonagh, TA
Cunningham, AD
Morrison, CE
McMurray, JJV
Ford, I
Morton, JJ
Dargie, HJ
机构
[1] Univ Glasgow, Royal Infirm, Dept Med Cardiol, Glasgow G31 2ER, Lanark, Scotland
[2] Univ Glasgow, Western Infirm, Dept Cardiol, Glasgow G31 2ER, Lanark, Scotland
[3] Univ Glasgow, Robertson Ctr Biostat, Glasgow G31 2ER, Lanark, Scotland
[4] Greater Glasgow Hlth Board, Glasgow, Lanark, Scotland
关键词
epidemiology; left ventricular dysfunction; natriuretic peptides;
D O I
10.1136/heart.86.1.21
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Objective-To, report the mortality of left ventricular systolic dysfunction (LVD), assessed objectively by echocardiography and its association with natriuretic peptide hormones in a random sample of 1640 men and women aged 25-74 years from a geographical, urban population. Methods-Left ventricular function was measured by echocardiography in 1640 attendees studied in 1992-3. LVD was defined as a left ventricular ejection fraction (LVEF) less than or equal to 30%. Plasma concentrations of N-terminal atrial natriuretic peptide (N-ANP) and brain natriuretic peptide (BNP) were measured by standard radioimmunoassays. Mortality was documented at four years. Results-The four year all cause mortality rate in the whole cohort was 4.9% (80 deaths). It was 21% (nine deaths) in those with an LVEF less than or equal to 3056 and 4% in those whose LVEF was > 30% (p < 0.001). The median (interquartile range) BNP concentration in those who died was 16.9 pg/ml (8.8-27) and 7.8 pg/ml (3.4-13) in survivors (p < 0.0001). Similarly, N-ANP had a median concentration of 2.35 ng/ml (1.32-3.36) in those with a fatal outcome and 1.27 ng/ml (0.9-2.0) in those alive at four years (p < 0.0001). Subjects with an LVEF <less than or equal to> 40% also had a significant mortality rate of 17% if they also had a BNP concentration greater than or equal to 17.9 pg/ml compared with 6.8% if their BNP was below this concentration (p = 0.013). Multivariate analysis revealed the independent predictors of four year all cause mortality to be increasing age (p < 0.001), a BNP concentration <greater than or equal to> 17.9 pg/ml (p = 0.006), the presence of ischaemic heart disease (p = 0.03), and male sex (p = 0.04). Conclusions-LVD is associated with a considerable mortality rate in this population. BNP also independently predicts outcome. In addition to its role as a diagnostic aid in chronic heart failure and LVD, it provides prognostic information and clarifies the meaning of a given degree of LVD.
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页码:21 / 26
页数:6
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