What question did this study set out to answer?

To determine the extent to which B-type natriuretic peptide (BNP) testing enhances clinical judgment in diagnosing congestive heart failure in patients presenting with acute dyspnea.

July 23, 2002Circulation

B-Type Natriuretic Peptide and Clinical Judgment in Emergency Diagnosis of Heart Failure

Q: What is the clinical evidence from this study?

Study design: Observational. Population: Acute dyspnea / Congestive heart failure (n=1586). Intervention: B-type natriuretic peptide (BNP) testing combined with clinical judgment vs. Clinical judgment alone. Primary outcome: Area under the receiver operating characteristic curve for diagnosis of CHF (AUC, 95% CI 0.92 to 0.94, p=<0.0001).

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Key result

Adding B-type natriuretic peptide testing to clinical judgment improved the diagnostic accuracy for congestive heart failure in patients with acute dyspnea (AUC 0.93 vs 0.86; P<0.0001).

Why the study?

Does adding BNP testing to clinical judgment improve diagnostic accuracy for congestive heart failure in patients presenting with acute dyspnea in the emergency department?

Key Points

To determine the extent to which B-type natriuretic peptide (BNP) testing enhances clinical judgment in diagnosing congestive heart failure in patients presenting with acute dyspnea.
Conducted a prospective diagnostic test evaluation across 7 centers (Breathing Not Properly Multinational Study) enrolling 1,586 emergency department patients presenting with acute dyspnea.
Assessed emergency physician diagnostic certainty of congestive heart failure in 1,538 patients alongside blinded BNP blood measurements.
Established the reference standard via independent adjudication by two cardiologists blinded to BNP test results.
Clinical judgment at an 80% certainty threshold had a sensitivity of 49% and specificity of 96%, while BNP at a 100 pg/mL cutoff yielded a sensitivity of 90% and specificity of 73%.
Adding BNP testing to clinical judgment increased overall diagnostic accuracy from 74% to 81% and correctly classified 74% of participants with intermediate (21% to 79%) clinical probability of heart failure.
The area under the receiver operating characteristic curve was 0.86 (95% CI 0.84–0.88) for clinical judgment, 0.90 (95% CI 0.88–0.91) for BNP alone, and 0.93 (95% CI 0.92–0.94) for their combination (P < 0.0001 for all comparisons).

Study Design

Type

Observational (n=1,586)

Blinding

Blinded

Multicenter

Yes

Structured PICO

Does adding BNP testing to clinical judgment improve diagnostic accuracy for congestive heart failure in patients presenting with acute dyspnea in the emergency department?

Population

1586 participants who presented with acute dyspnea in the emergency department across 7 multinational centers.

Intervention

B-type natriuretic peptide (BNP) testing (cutoff 100 pg/mL) added to clinical judgment

Comparator

Clinical judgment alone

Outcome

Diagnostic accuracy for congestive heart failure (CHF) compared to reference standard adjudicated by 2 independent cardiologistssurrogate

Main Result

Effect estimate: AUC (95% CI 0.92 to 0.94)

Absolute Event Rate: 0.93% vs 0.86%

p-value: p=<0.0001

Adding BNP testing to clinical judgment significantly improves the diagnostic accuracy of congestive heart failure in patients presenting to the emergency department with acute dyspnea.

Discussion

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Implication

Supports BNP use in ED dyspnea evaluation; leaves open randomized confirmation of outcome benefits.

Cite This Study

McCullough et al. (2002) conducted an observational in Acute dyspnea / Congestive heart failure (n=1,586). B-type natriuretic peptide (BNP) testing combined with clinical judgment vs. Clinical judgment alone was evaluated on Area under the receiver operating characteristic curve for diagnosis of CHF (AUC, 95% CI 0.92 to 0.94, p=<0.0001). Adding B-type natriuretic peptide testing to clinical judgment improved the diagnostic accuracy for congestive heart failure in patients with acute dyspnea (AUC 0.93 vs 0.86; P<0.0001).

synapsesocial.com/papers/6a0efd70b7cc3b883f22f56c https://doi.org/10.1161/01.cir.0000025242.79963.4c

Topics

Heart failure HFrEF treatment

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B-Type Natriuretic Peptide and Clinical Judgment in Emergency Diagnosis of Heart Failure

Key Points

Study Design

Structured PICO

Main Result

Discussion

Implication

Cite This Study

Topics

B-Type Natriuretic Peptide and Clinical Judgment in Emergency Diagnosis of Heart Failure

Key Points

Study Design

Structured PICO

Main Result

Discussion

Implication

Cite This Study

Also Consider

Topics

Also Consider