Parsonnet Score

Last reviewed 04/2022

Method of predicting risk of undertaking cardiac surgery.

Risk Factor : Parsonnet Score

  • female gender = 1
  • obesity (>1.5 x ideal weight) = 3
  • diabetes = 3
  • hypertension (>140mmHg) = 3
  • ejection fraction
    • >50% = 0
    • 30-49% = 2
    • <30% = 4
  • age
    • 70-74 years = 7
    • 75-79 years = 12
  • reoperation
    • 1st = 5
    • 2nd =10
  • dialysis dependent = 10
  • catheter lab emergency = 10
  • catastrophic states = 10-50

Interpretation:

Parsonnet score Risk Predicted Mortality (%)
0-4 good 1
5-9 fair 5
10-14 poor 9
15-19 high 17
20+ extremely high 30

Reference:

  • Parsonett V et al. Circulation (1989);79(1);1.3-1.12.