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Validation of the appropriate use criteria for coronary angiography: a cohort study

Michael M Mohareb, Feng Qiu, Warren J Cantor

    Annals of Internal Medicine
    |March 10, 2015
    PubMed

    Insights

    The 2012 appropriate use criteria for diagnostic catheterization showed variability in stable ischemic heart disease (IHD) patients. A significant proportion of patients with inappropriate or uncertain indications had obstructive coronary artery disease (CAD), raising concerns for clinical decision-making.

    Area of Science:

    • Cardiology
    • Medical Decision Making
    • Health Services Research

    Background:

    • Invasive coronary angiography use in stable ischemic heart disease (IHD) exhibits wide variation.
    • The 2012 appropriate use criteria (AUC) were developed to guide diagnostic catheterization in IHD.
    • Validation of these AUC is crucial for optimizing patient care and resource allocation.

    Purpose of the Study:

    • To validate the 2012 AUC for diagnostic catheterization in patients with suspected stable IHD.
    • To examine the relationship between AUC appropriateness categories and the prevalence of obstructive coronary artery disease (CAD).
    • To assess the association between AUC appropriateness and subsequent revascularization rates.

    Main Methods:

    • A population-based, observational, multicenter cohort study was conducted.
    • Data were sourced from the Cardiac Care Network registry in Ontario, Canada (2008-2011).
    • Patients without prior revascularization or myocardial infarction undergoing angiography for suspected stable CAD were included; appropriateness was categorized as appropriate, inappropriate, or uncertain.

    Main Results:

    • Of 48,336 patients, 58.2% had appropriate, 10.8% inappropriate, and 31.0% uncertain indications for angiography.
    • Obstructive CAD was present in 45.5% of all patients.
    • Patients with appropriate indications had higher rates of obstructive CAD (52.9%) and revascularization (40.0%) compared to inappropriate (30.9% CAD, 18.9% revascularization) or uncertain (36.7% CAD, 25.9% revascularization) groups, though significant CAD was found across all categories.

    Conclusions:

    • Despite correlations between appropriateness and obstructive CAD, the AUC's ability to guide clinical decisions is questioned.
    • A substantial percentage of patients with uncertain or inappropriate indications had significant coronary artery disease, suggesting potential under-diagnosis or overtreatment.
    • Further refinement of AUC may be necessary to improve their clinical utility in stable IHD management.
    Abstract

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