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Fontan Failure Risk Calculator

  • Age at First Adult Visit (years)
  • History of Atrial Tachyarrhythmia
  • History of Heart Failure
  • NYHA Functional Class
  • Systolic Blood Pressure (mmHg)
  • Resting Arterial Oxygen Saturation (%)
  • Fontan Adult Brompton (FAB) Score: Explanation and Clinical Context
     The FAB score is a clinical tool developed to predict the risk of mortality or need for heart transplantation in adult patients with Fontan circulation. It incorporates six clinical variables: age at first adult visit, history of atrial tachyarrhythmia, history of heart failure, New York Heart Association (NYHA) functional class, systolic blood pressure, and resting arterial oxygen saturation. A higher FAB score correlates with increased risk, aiding clinicians in stratifying patients for appropriate management strategies.

    Reference:
    Montanaro C, et al. The Fontan Adult Brompton clinical score and mortality risk. Eur Heart J. 2025;46(20):1933-1941. doi:10.1093/eurheartj/ehac137

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