Atrial natriuretic peptide levels in the elderly: Differentiating normal aging changes from disease

被引:33
作者
Davis, KM
Fish, LC
Minaker, KL
Elahi, D
机构
[1] HARVARD UNIV,SCH MED,DIV AGING,CAMBRIDGE,MA 02138
[2] HEBREW REHABIL CTR AGED,BOSTON,MA 02131
[3] MASSACHUSETTS GEN HOSP,BEACON HH GERIATR HLTH PRACTICE,BOSTON,MA 02114
[4] VET AFFAIRS MED CTR,GRECC,BALTIMORE,MD
来源
JOURNALS OF GERONTOLOGY SERIES A-BIOLOGICAL SCIENCES AND MEDICAL SCIENCES | 1996年 / 51卷 / 03期
关键词
D O I
10.1093/gerona/51A.3.M95
中图分类号
R592 [老年病学]; C [社会科学总论];
学科分类号
03 ; 0303 ; 100203 ;
摘要
Background. Atrial natriuretic peptide (ANP) levels increase with advancing age and in patients with cardiac dysfunction. Previous studies have failed to differentiate the elevated ANP levels of normal aging from those of cardiac disease. Methods. To differentiate the increased ANP levels seen in normal aging from that of disease, tasting supine ANP was measured in healthy young (n=24), healthy old (n=90), and clinically stable bu cardiovascularly diseased old (n=269) residents of a life care facility. ANP levels were correlated with physical exam findings, blood chemistries, measures of physical and cognitive function, and medications. Results. ANP levels were almost fourfold higher in the healthy elderly than in the young (11.4+/-1.1 (SEM) vs 3+/-0.3 pmol/L. p <.01), and two-and-one half times higher in the cardiovascular-diseased elderly than the healthy elderly (29+/-1.9 vs 11.4+/-1.1 pmol L. p <.01). An ANP value of 21 pmol L has a sensitivity of 83% and specificity of 52% in distinguishing those elders classified as healthy from those classified as having chronic cardiovascular disease. ANP levels had positive univariate correlation with age (even from 70 to 102 years) an systolic blood pressure. ANP rose progressively with increasing numbers of markers of cardiovascular comorbidity. ANP was higher in subjects with jugular venous pressure 10 cm, presence of a third heart sound, peripheral edema, artificial cardiac pacemaker, atrial arrhythmias, and in those taking digoxin diuretics, or nitrates. On multivariate analysis independent predictors of ANP levels were in descending order, nitrates, age, diuretics, and atrial arrhythmias. Conclusion. These data suggest that ANP levels greater than 21 pmol L are associated with cardiovascular comorbidity in a clinically stable elderly cohort.
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页码:M95 / M101
页数:7
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