The ability of end-tidal carbon dioxide value to predict the risk of major cardiovascular events in patients with acute coronary syndrome

OBJECTIVES: In this study, the capacity of End-tidal carbon dioxide (EtCO2) levels to predict the risk of major cardiovascular events (MACE) in patients diagnosed with acute coronary syndrome and the relationship between risk scoring systems (TIMI, GRACE, HEART) and EtCO2 values were examined. METHODS: EtCO2 values of the patients in the study were measured with a capnography device. Each patient's MACE status was recorded. RESULTS: < 0.00). (iii) The optimal EtCO2 cut-off point was 30 mmHg. This threshold value provided both sensitivity and specificity for the risk of MACE. (IV) Significant associations were found between EtCO2 and GRACE, TIMI and HEART scoring systems. EtCO2 values were significantly higher in the low-risk groups. (V) EtCO2 was significantly different in all three risk scoring systems in the non-MACE group, but only with the GRACE score in the MACE group. CONCLUSION: This study demonstrated that EtCO2 is a valuable indicator for predicting the risk of MACE in patients with ACS.