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Value of B-type natriuretic peptide in diagnosing left ventricular dysfunction in dialysis-dependent patients

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Abstract:

Abstract Background:

B-type natriuretic peptide (BNP) is elevated in patients with end-stage renal failure. The reported accuracy of BNP in diagnosing left ventricular dysfunction in these patients has been inconsistent. Aim:

To investigate the diagnostic values of BNP for left ventricular dysfunction in patients undergoing haemodialysis for chronic renal failure. Methods:

We measured plasma BNP before and at 10 min and 3, 6 and 24 h after haemodialysis in 56 patients. Results:

The average plasma BNP before haemodialysis was 284 ± 369 pg/mL, which was higher than that of healthy subjects (37 ± 37 pg/mL; n = 32, P < 0.01). The average plasma BNP in patients with left ventricular dysfunction (n = 21) was substantially higher than that in those with normal ventricular function before and at 10 min and 3, 6 and 24 h after haemodialysis (P < 0.001). The area under the receiver operating characteristic curves was greater than 0.895 before and at the four time points after haemodialysis (P < 0.01). Using 152 pg/mL as a cut-off value, predialysis BNP has 81% sensitivity and 83% specificity in diagnosing left ventricular dysfunction in these patients. Conclusion:

We concluded that plasma BNP offers a good sensitivity and specificity in diagnosing left ventricular dysfunction in patients with dialysis-dependent renal failure.

Keywords: B-type natriuretic peptide; chronic renal failure; haemodialysis; left ventricular dysfunction

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/j.1445-5994.2006.01136.x

Affiliations: 1: Departments of 1Cardiology 2: Nephrology, Lishui City Central Hospital, Zhejiang Province, China

Publication date: September 1, 2006

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