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  • Title: [Predictive value for long term cardiac events by admission B-type natriuretic peptide and pulmonary capillary wedge pressure in patients with chronic heart failure].
    Author: Hu YM, Wang M, Zhao SQ.
    Journal: Zhonghua Xin Xue Guan Bing Za Zhi; 2008 Sep; 36(9):786-9. PubMed ID: 19102857.
    Abstract:
    OBJECTIVE: To evaluate the predictive value of admission plasma B-type natriuretic peptide (BNP) and pulmonary capillary wedge pressure (PCWP) for long term cardiovascular events in patients with chronic heart failure (CHF). METHODS: A total of 134 patients [70 males and 64 females, mean age (71.28 +/- 8.22) years] with CHF were included in this study. PCWP was measured with a Swan-Ganz catheterization and plasma BNP level was determined by a rapid immunofluorescence assay (Triage, Biosite, USA) in all patients on admission day. Left ventricular end diastolic diameter (LVEDD) and cardiothoracic ratio (CRT) were measured within 24 hours before or after catheterization. All CHF patients received conventional therapy and the rates of cardiac death and rehospitalization were used as end points during 3-year follow up. RESULTS: (1) LVEDD, CRT, PCWP and BNP were increased in patients with cardiac events compared with patients without cardiac events (P < 0.01). (2) Multivariant logistic analysis showed that PCWP (OR = 1.423, 95% CI 1.163 - 1.741) and BNP (OR = 1.005, 95% CI 1.002 - 1.007) were the independent factors for cardiac events. (3) The area under the receiver operating curve (ROC) of BNP and PCWP to predict cardiac death was 0.846 (95% CI 0.771 - 0.922) and 0.762 (95% CI 0.666 - 0.875), respectively. The sensitivity was 76.5% and the specificity was 75.2% with BNP cutoff point of 720.5 ng/L, and the sensitivity was 68.1% and the specificity was 76.2% with PCWP cutoff point of 19.5 mm Hg (1 mm Hg = 0.133 kPa) for predicting cardiac deaths. (4) The survival rate of patients with BNP < or = 702.5 ng/L and PCWP < or = 19.5 mm Hg were significantly higher than that in patients with BNP > 702.5 ng/L (OR = 4.383, 95% CI 1.407 - 13.650) and PCWP > 19.5 mm Hg (OR = 2.843, 95% CI 1.013 - 8.854). CONCLUSION: Both plasma BNP and PCWP on admission day are independent predictors for long term cardiac events in patients with CHF.
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