Affiliation:
1. University of Novi Sad, Faculty of Medicine Novi Sad + Institute of Cardiovascular Diseases of Vojvodina, Sremska Kamenica
2. Institute for Orthopedic Surgery “Banjica”, Belgrade
Abstract
Introduction. The aim of this study was to evaluate the predictive value of
the European System for Cardiac Operative Risk Evaluation II in adult
patients with acquired heart diseases. Material and Methods. The research
included a consecutive series of 6,031 patients who underwent coronary,
valvular and combined cardiac surgical interventions in the period from
January 15, 2015 to December 31, 2020. Model calibration was assessed by
comparing the ratio of actual to expected postoperative mortality and using
the Hosmer-Lemeshow test. The discriminative power was examined using the
area under the receiver operating characteristic curve. Results. A total of
2,883 patients underwent isolated coronary surgery, 1,841 underwent valvular
procedures, while a combined procedure was performed in 1,307 patients. The
operative risk was moderately underestimated in the entire group, as well as
in the group of patients who underwent surgical revascularization of the
coronary arteries. In patients who underwent valvular surgery, the actual
mortality rate was slightly overestimated, while in patients with combined
procedures it was moderately underestimated. The European System for Cardiac
Operative Risk Evaluation II showed excellent discriminative power in the
whole group of patients undergoing surgery (area under the curve = 0.825, p
< 0.0005). The cut-off value was 2.60, sensitivity 0.757 and specificity
0.750. The discriminative power of the model was excellent in the group of
coronary patients (area under the curve = 0.810) as well as in the group
with isolated valvular surgery (area under the curve = 0.815). In patients
with combined procedures, the discriminatory power was very good (area under
the curve = 0.775). Conclusion. The results of our single centre study show
that European System for Cardiac Operative Risk Evaluation II predicts
hospital mortality with satisfactory results in the entire group, but
underestimates it when it comes to combined cardiac surgical procedures. The
discriminative power of the model is excellent.
Publisher
National Library of Serbia
Cited by
1 articles.
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