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MUSTT Score (VT Inducibility) Calculator

  • Age (years)
  • Left Ventricular Ejection Fraction (LVEF, %)
  • NYHA Class (II-IV)
  • Prior Myocardial Infarction (Yes=1, No=0)
  • Non-Sustained VT on Holter (Yes=1, No=0)
  • Inducible VT (Yes=1, No=0)
  • MUSTT Score (VT Inducibility): Explanation and Clinical Context
    The MUSTT (Multicenter Unsustained Tachycardia Trial) Score is designed to estimate the risk of arrhythmic events and sudden cardiac death in patients with prior myocardial infarction, left ventricular dysfunction, and non-sustained ventricular tachycardia.
    It incorporates key clinical parameters: age, left ventricular ejection fraction, NYHA functional class, history of prior myocardial infarction, presence of non-sustained VT on Holter, and inducibility of VT during electrophysiological study.
    Higher scores correlate with higher risk, and patients with inducible VT are considered at particularly increased risk, which can guide decisions regarding ICD implantation.

    Reference:
    Hohnloser SH, Kuck KH, Dorian P, et al. Prophylactic use of an implantable cardioverter-defibrillator after acute myocardial infarction. MUSTT Investigators. Circulation. 1999;100:376–382. doi:10.1161/01.CIR.100.4.376

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