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OBSERVANT TAVI Mortality Index Calculator

  • eGFR < 45 mL/min
  • Critical Preoperative State
  • NYHA Class IV
  • Pulmonary Hypertension
  • Diabetes Mellitus
  • Previous Balloon Aortic Valvuloplasty
  • LVEF < 40%
  • OBSERVANT Score (TAVI): Explanation and Clinical Context
  • The OBSERVANT Score is a validated tool developed to estimate 30-day mortality risk for patients undergoing Transcatheter Aortic Valve Replacement (TAVR). It utilizes simple clinical variables available at hospital admission, including glomerular filtration rate (eGFR), critical preoperative state, New York Heart Association (NYHA) functional class IV, pulmonary hypertension, diabetes mellitus, previous balloon aortic valvuloplasty, and left ventricular ejection fraction (LVEF) < 40%. The total score stratifies patients into low or high risk for 30-day mortality, aiding clinicians in risk stratification, treatment planning, and resource allocation.
  • Reference:
    Capodanno D, et al. A simple risk tool (the OBSERVANT score) for prediction of 30-day mortality after transcatheter aortic valve replacement. Am J Cardiol. 2014;113:1851–1858. doi:10.1016/j.amjcard.2014.01.042

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