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Table 2 Operative characteristics of patients with EuroSCORE > 20 compared to those with EuroSCORE ≤ 20

From: The European System for Cardiac Operative Risk Evaluation (EuroSCORE) is not appropriate for withholding surgery in high-risk patients with aortic stenosis: a retrospective cohort study

Variable, % unless otherwise indicated EuroSCORE > 20,
n = 237
EuroSCORE ≤ 20,
n = 1,184
Critical preoperative state* 24.5 1.0
Emergency surgery 10.1 0.9
Concomitant thoracic aortic surgery 16.5 5.7
Concomitant CABG 58.7 42.2
Type of prosthesis   
Bioprosthesis (tissue valve)
Mechanical valve
Homograft
84.0
13.5
2.5
81.7
17.6
0.8
Cardiopulmonary bypass time, mean min ± SD 178.5 ± 64.4 148.8 ± 51.8
Aortic clamp time, mean min ± SD 122.8 ± 47.0 106.7 ± 37.8
Prosthetic valve indexed EOA§<0.75 cm2/m2 4.7 10.4
  1. *Includes: resuscitated cardiac arrest, dependence on mechanical ventilator, and cardiogenic shock requiring inotropic support and/or intra-aortic balloon counterpulsation.
  2. §Effective orifice area was computed for each implanted valve type and size according to the measurements published by valve manufacturers and/or independent adjudicators and was indexed on patient body surface area.
  3. CABG = coronary artery bypass graft surgery; EOA = effective orifice area; SD = standard deviation.