Gupta Perioperative Risk for Myocardial Infarction or Cardiac Arrest Score is a Long-Term Cardiovascular Risk Predictor After Aortoiliac Revascularization

Abstract

Gupta Perioperative Risk for Myocardial Infarction or Cardiac Arrest (MICA) is a validated self-explanatory score applied in cardiac or non-cardiac surgeries. This study aims to assess the predictive value of the MICA score for cardiovascular events after aortoiliac revascularization. This prospective cohort underwent elective aortoiliac revascularization between 2013 and 2021. Patients' demographic, clinical characteristics and outcomes were registered. The patients were divided into two groups according to the MICA score using optimal binning. Survival analysis to test for time-dependent variables and multivariate Cox regression analysis for independent predictors were performed. This study included 130 patients with a median follow-up of 55 months. Preoperative MICA score was ≥ 6.5 in 41 patients. MICA ≥ 6.5 presented a statistically significant association with long-term occurrence of acute heart failure (HR=1.695, 95% CI 1.208-2.379, p=0.002), major adverse cardiovascular events (HR=1.222, 95% CI 1.086-1.376, p<0.001) and all-cause mortality (HR=1.256, 95% CI 1.107-1.425, p<0.001). Multivariable Cox regression confirmed MICA as a significant independent predictor of long-term major adverse cardiovascular events (aHR=1.145 95%CI 1.010-1.298, p=0.034) and all-cause mortality (aHR=1.172 95%CI 1.026-1.339, p=0.020). The MICA score is a quick, easy-to-obtain, predictive tool in identifying patients with a higher risk of post-aortoiliac revascularization cardiovascular events, such as acute heart failure, major adverse cardiovascular events and all-cause mortality. Additional research for validation of the MICA score in the context of aortoiliac revascularization and specific interventions are necessary.