Correlation between Surgical Risk Calculator and Safety Zone scores in the preoperative period of non-cardiac surgeries

Abstract

Context: VTE is a common complication in hospitalized patients. Thus, thromboembolic risk stratification is essential to minimize complications and optimize the patient's preoperative condition before elective surgeries. Objective: To investigate the correlation between the ACS NSQIP Surgical Risk Calculator score and the TEV Safety Zone in the preoperative outpatient evaluation of thromboembolic risk in non-cardiac surgeries. Methods: Retrospective cross-sectional observational study with electronic records analysis of patients attending a multidisciplinary outpatient clinic of medicine and perioperative nursing in the period from January to December 2017. The TEV Safety Zone thromboembolic risk score, already applied in the clinic with the risk of venous thromboembolism obtained by the ACS NSQIP Surgical Risk Calculator, was correlated. Results:A sample of 416 medical records was collected. Of these, 197 (47.6%) resulted in an equivalent risk between the two scores and 219 diverged in the results. A p<0,001 was obtained by the Wilcoxon test.Conclusions: There was a correlation between the ACS NSQIP Surgical Risk Calculator and the TEV Safety Zone (p <0.001).