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

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

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

*Includes: resuscitated cardiac arrest, dependence on mechanical ventilator, and cardiogenic shock requiring inotropic support and/or intra-aortic balloon counterpulsation.
§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.
CABG = coronary artery bypass graft surgery; EOA = effective orifice area; SD = standard deviation.

ISSN: 1749-8090