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      Calc Function

    • Calcs that help predict probability of a diseaseDiagnosis
    • Subcategory of 'Diagnosis' designed to be very sensitiveRule Out
    • Disease is diagnosed: prognosticate to guide treatmentPrognosis
    • Numerical inputs and outputsFormula
    • Med treatment and moreTreatment
    • Suggested protocolsAlgorithm

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    Patent Pending

    New York Heart Association (NYHA) Functional Classification for Heart Failure

    Stratifies severity of heart failure by symptoms.
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    When to Use
    Pearls/Pitfalls

    Patients with signs and symptoms of heart failure.

    • Often criticized for being outdated, subjective, and with limited reproducibility (56% according to one study by Goldman et al). Nevertheless, it is still commonly used in both research and clinical settings.
    • Functional class is not necessarily linked to treatment strategy; the more modern ACC/AHA Heart Failure Staging is one attempt to bridge the gap.
    No limitation of physical activity; ordinary physical activity does not cause undue fatigue, palpitation, or dyspnea
    Slight limitation of physical activity; comfortable at rest; ordinary physical activity results in fatigue, palpitation, or dyspnea
    Marked limitation of physical activity; comfortable at rest; less than ordinary activity causes fatigue, palpitation, or dyspnea
    Unable to carry on any physical activity without discomfort; symptoms of heart failure at rest; if any physical activity is undertaken, discomfort increases

    Result:

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    Next Steps
    Evidence
    Creator Insights

    Advice

    Use objective measures of heart failure severity such as echocardiography and 6 Minute Walk Distance to further stratify functional capacity and make treatment decisions.

    About the Creator
    Dr. Martin Dolgin
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