Evaluation of Brain Natriuretic Peptide in the Diagnosis of Heart Failure

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Abstract
A diagnosis of heart failure (HF) can be difficult, especially in patients with mild symptomatology. The purpose of this study was to evaluate the significance of brain natriuretic peptide (BNP) in the diagnosis of HF with systolic or isolated diastolic ventricular dysfunction. One hundred patients and 9 controls were included in the study. Eighty-five patients were diagnosed with HF, based on clinical and echocardiographic findings. BNP levels were accurate for the diagnosis of HF, with an area under the receiver operating characteristic (ROC) curve (AUC) of 0.92. In addition, BNP levels showed an excellent accuracy for the diagnosis of isolated diastolic HF (AUC = 0.89). These data suggest that the measurement of BNP levels may be helpful in the diagnosis of HF and in selecting patients for further evaluation. Furthermore, BNP measurement can play an important role in the diagnosis of isolated diastolic HF.