OR78. The utility of shock index, modified shock index and age shock index to predict in-hospital mortality and icu admission in patients hospitalized with acute coronary syndrome

Abstract

Abstract Aims The shock index (SI), the modified shock index (MSI), and the age shock index (ASI) are simple scales which can be obtained bedside. These scales have been studied to predict outcomes in various diseases. We aimed to evaluate the use of SI, MSI and ASI in patients hospitalized with acute coronary syndrome (ACS). Method and Result In this cross-sectional study, 102 patients who were admitted with ACS to Kediri General Hospital between January and June 2020 were included. Patients who presented with shock were excluded. We calculated for each patient the admission SI (defined as heart rate/systolic blood pressure), MSI (heart rate/mean arterial pressure), and ASI (age × SI). The mean SI was 0.70 ± 0.20, MSI was 0.95 ± 0.23 and ASI was 42.33 ± 14.17. Receiver-operating characteristic (ROC) curve analysis was used to assess the ability of SI, MSI and ASI to predict in-hospital mortality and ICU admission. The observed AUC of SI was 0.706 (95% CI 0.572-0.840), MSI was 0.705 (95% CI 0.58-0.83), and ASI was 0.687 (95% CI 0.540-0.834) in predicting in-hospital mortality. The cut-off point for SI was 0.75 with sensitivity of 69.2% and specificity of 67.4% in predicting in-hospital mortality. MSI demonstrated better C-statistics (0.665, 95% CI = 0.565 - 0.765) in predicting ICU admission. Conclusion SI had the best predictive value for in-hospital mortality compared with MSI and ASI, while MSI could predict ICU admission in patients with ACS.