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J Am Coll Cardiol. 2004 Sep 1;44(5):1047-52.

Prognostic role of B-type natriuretic peptide levels in patients with type 2 diabetes mellitus.

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1
Division of Cardiology, Veteran's Affairs Medical Center, San Diego, California 92161, USA.

Abstract

OBJECTIVES:

We hypothesized that B-type natriuretic peptide (BNP) levels can predict cardiac mortality in diabetic patients.

BACKGROUND:

Detection of cardiovascular disease in diabetics can be difficult until overt events occur.

METHODS:

A total of 482 diabetics (majority male with type 2 diabetes) at the Veterans Affairs Medical Center San Diego were divided into two groups: 1) referred patients for echocardiogram on the basis of clinical suspicion of cardiac dysfunction (referred [R], n = 180); 2) patients randomly selected from the diabetic clinic without any suspicion of cardiac dysfunction (not referred [N-R], n = 302). We examined cardiac events and all-cause mortality in relation to initial BNP levels during the follow-up.

RESULTS:

A total of 71 (14.7%) patients died during this period: 52 of 180 (29%) in the R group (30 of 52 [58%] cardiac, 10 of 52 [19%] non-cardiac, 2 of 52 [4%] renal, 10 of 52 [19%] unknown cause) and 19 of 302 (6%) in N-R group (6 of 19 [32%] cardiac). The median BNP level in the R and N-R groups who died of cardiac, non-cardiac, and unknown cause was 537 and 87, 80 and 53, and 343 and 38 pg/ml, respectively. The receiver-operating characteristic (ROC) values for mortality in two groups in relation to BNP revealed the area under the curve to be 0.720 and 0.691, respectively (p < 0.01 in both). Among commonly used prognostic indicators in diabetics, only the ROC for triglycerides was significant. The most accurate cut-point in both the N-R group (87%) and R group (61%) was 120 pg/ml of BNP. Cox regression analysis showed BNP to be the most significant predictor of all-cause mortality in the R group. There was a marked decrease in survival in the patient group with BNP >120 pg/ml.

CONCLUSIONS:

B-type natriuretic peptide appears to be a reliable predictor of future cardiac and all-cause mortality in diabetic patients.

PMID:
15337217
DOI:
10.1016/j.jacc.2004.05.071
[Indexed for MEDLINE]
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