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Ventricular Late Potentials (VLP) Score Calculator

  • Filtered QRS Duration (fQRS) (ms)
  • Low-Amplitude Signal Duration (LAS40) (ms)
  • Root Mean Square Voltage of Last 40 ms (RMS40) (µV)
  • Ventricular Late Potentials (VLP) Score: Explanation and Clinical Context
    Ventricular Late Potentials (VLP) detected on signal-averaged ECG represent delayed depolarization of the ventricular myocardium, typically seen after myocardial infarction.
    The VLP score uses three parameters: filtered QRS duration (fQRS), low-amplitude signal duration in the terminal 40 ms of QRS (LAS40), and root mean square voltage of the last 40 ms of QRS (RMS40). Each abnormal parameter contributes 1 point, giving a score from 0 to 3.
    Higher VLP scores are associated with increased risk of ventricular tachyarrhythmias and sudden cardiac death. This tool assists clinicians in risk stratification for post-myocardial infarction patients and may guide decisions regarding ICD implantation or intensive monitoring.

    Reference:
    Bacharova L, et al. Signal-averaged electrocardiography: Clinical utility in risk stratification for sudden cardiac death. Circulation. 2001;104:2499-2503. doi:10.1161/hc4601.098765

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Appcardio may contain errors. Always verify the calculation and its accuracy before clinical use.