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SCD-HeFT Risk Calculator

  • Age (years)
  • Sex
  • NYHA Functional Class
  • Ischemic Heart Disease
  • Left Ventricular Ejection Fraction (LVEF %)
  • Systolic Blood Pressure (mmHg)
  • Serum Sodium (mmol/L)
  • Heart Rate (bpm)
  • Diabetes Mellitus
  • SCD-HeFT Risk Calculator: Explanation and Clinical Context
    The Sudden Cardiac Death in Heart Failure Trial (SCD-HeFT) evaluated the role of implantable cardioverter-defibrillator (ICD) therapy in patients with heart failure and reduced ejection fraction (HFrEF). The study enrolled patients with ischemic or nonischemic cardiomyopathy, NYHA class II–III, and LVEF ≤35%.
    This calculator provides an approximate estimation of the 3-year all-cause mortality risk based on key clinical predictors commonly associated with outcomes in heart failure populations similar to those in SCD-HeFT. It can assist clinicians in identifying patients who may derive the greatest survival benefit from ICD implantation.
    A lower estimated risk suggests a lower likelihood of sudden death benefit, while a higher risk indicates potential competing risks from progressive pump failure.
    This model is educational and not intended to replace validated institutional or commercial ICD risk calculators.

    Reference:
    Bardy GH, Lee KL, Mark DB, et al. Amiodarone or an implantable cardioverter–defibrillator for congestive heart failure. New England Journal of Medicine. 2005;352(3):225–237. doi:10.1056/NEJMoa043399

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