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A comparison of criterion standard methods to diagnose acute heart failure

Sean P Collins1, Christopher J Lindsell, Donald M Yealy

  • 1Department of Emergency Medicine, Vanderbilt University, Nashville, TN 37232, USA. sean.collins@vanderbilt.edu

Congestive Heart Failure (Greenwich, Conn.)
|September 22, 2012
PubMed

Insights

Diagnosing acute heart failure syndromes (AHFS) in the emergency department (ED) can vary. Different diagnostic standards show good agreement but identify different patient groups, impacting research.

Area of Science:

  • Cardiology
  • Emergency Medicine
  • Clinical Diagnostics

Background:

  • Acute heart failure syndromes (AHFS) require accurate and consistent diagnosis in emergency settings.
  • Current diagnostic criterion standards in emergency departments (EDs) for AHFS lack standardized comparison.
  • Variability in diagnostic criteria may affect patient identification and subsequent management.

Purpose of the Study:

  • To compare and contrast the clinical criterion standards used for diagnosing AHFS in emergency department patients.
  • To assess the agreement between different diagnostic standards for AHFS.
  • To inform researchers on the implications of choosing specific criterion standards for evaluating new diagnostic tests.

Main Methods:

  • Prospective observational study involving 483 patients presenting with signs and symptoms suggestive of AHFS.
  • Three criterion standards were evaluated: ED physician diagnosis, hospital discharge diagnosis, and expert cardiologist review.
  • Cohen's kappa (κ) coefficient was used to assess inter-rater agreement between the diagnostic standards.

Main Results:

  • All criterion standards showed good agreement (κ values ranging from 0.59 to 0.74).
  • Patients diagnosed with AHFS consistently presented with a history of AHFS, physical examination findings of congestion, chest radiography findings, and elevated natriuretic peptide levels.
  • While sensitivity was similar across standards, specificities differed, indicating that each method identifies distinct patient populations.

Conclusions:

  • The choice of criterion standard significantly influences patient selection in AHFS diagnosis.
  • Researchers must carefully consider the implications of different criterion standards when developing or validating new diagnostic tests for AHFS.
  • Further research may be needed to establish a gold standard for AHFS diagnosis in the ED setting.

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