Key Points
- This research aims to evaluate the diagnostic accuracy of B-type natriuretic peptide tests in excluding congestive heart failure (CHF).
- Systematic search of electronic databases and references for studies on BNP test accuracy.
- Data extracted on test types (ELISA, RIA) and patient populations.
- Random-effect meta-analysis and metaregression performed to analyze data and address heterogeneity.
- The pooled negative likelihood ratio from meta-analysis was 0.18 (95% CI, 0.13-0.23) indicating strong diagnostic performance.
- ELISA tests demonstrated a lower negative likelihood ratio (0.12; 95% CI, 0.09-0.16) compared to RIA tests (0.23; 95% CI, 0.16-0.32).
- A negative ELISA result would yield a posttest probability of 2.9%, while a negative RIA result yields 5.4% for a 20% pretest probability of suspected CHF.
Structured PICO
Does B-type natriuretic peptide (BNP) testing accurately exclude congestive heart failure in patients with suspected CHF?
PPopulation19 studies describing 22 patient populations and 9093 patients with suspected congestive heart failure
IInterventionB-type natriuretic peptide (BNP) tests (rapid enzyme-linked immunosorbent assay [ELISA] and standard radioimmunosorbent assay [RIA])
CComparatorDiagnosis verified by echocardiography, radionuclide scan, or echocardiography combined with clinical criteria
OOutcomeDiagnostic accuracy measured by negative likelihood ratio and receiver operating characteristic (ROC) plotssurrogate
BNP tests, particularly rapid ELISA, demonstrate high diagnostic accuracy for ruling out congestive heart failure, potentially reducing the need for echocardiography in primary care.