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. 2017 Dec;96(51):e9181.
doi: 10.1097/MD.0000000000009181.

NT-proBNP test with improved accuracy for the diagnosis of chronic heart failure

Yesheng Pan  1 , Dongjiu Li, Jian Ma, Li Shan, Meng Wei
Affiliations

NT-proBNP test with improved accuracy for the diagnosis of chronic heart failure

Yesheng Pan et al. Medicine (Baltimore). 2017 Dec.

Abstract

The circulating concentration of N-terminal pro-brain natriuretic peptide (NT-proBNP) has been shown to be a diagnostic tool for the detection of heart failure. Several factors influence NT-proBNP levels including age, sex, and body mass index (BMI). Therefore, the diagnostic sensitivity of NT-proBNP level for heart failure is relatively higher, but its specificity is low. This study aims to improve the diagnostic accuracy rate of this test by including multiple variables in the diagnostic test.The suspected chronic heart failure outpatients were divided into heart failure with reduced ejection fraction, heart failure with mid-range ejection fraction, heart failure with preserved ejection fraction, and normal heart function groups. Area under the receiver-operating characteristic (ROC) curve, cut-off value, and logistic regression analysis were used to select the model variables, sensitivity and specificity.In all, 436 subjects enrolled into this study were divided in 2 groups: model establishment (n = 300) and model validation (n = 136). In the model establishment group, the area under the curve (AUC) and cut-off value of NT-proBNP was 0.926 and 257.4 pg/mL, respectively. When age, glomerular filtration rate, BMI, atrial fibrillation, and sex were entered into the diagnosis model, AUC, sensitivity, and specificity further increased to 0.955 (95% confidence interval [CI] 0.934, 0.976), 94.2% (from 93.0%), and 86.7% (from 74.2%). The ROC curve of corrected NT-proBNP diagnostic formula for heart failure was also significantly higher (P = .037).The corrected NT-proBNP diagnostic formula was found to improve the diagnostic accuracy of chronic heart failure.

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Conflict of interest statement

The authors declared that they had no conflicts of interest.

Figures

Figure 1
Figure 1
Receiver-operating characteristic (ROC) curve of uncorrected NT-proBNP as a diagnostic test for the detection of chronic heart failure. NT-proBNP = N-terminal pro-brain natriuretic peptide.
Figure 2
Figure 2
Receiver-operating characteristic (ROC) curve of the model establishment dataset for the detection of chronic heart failure.
Figure 3
Figure 3
Receiver-operating characteristic (ROC) curve of the model validation dataset for the detection of chronic heart failure.
See this image and copyright information in PMC

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