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Shock index (SI) is defined as a ratio of heart rate and systolic blood pressure. It was originally employed to evaluate hemorrhage and acute circulatory failure. Recently, SI has been used as a morbidity and mortality predictor in various fields. An elevated SI was associated with higher morbidity. To detect the sensitivity and specificity of SI in predicting major cardiac events. We randomly enrolled 100 patients who were set to undergo on-pump coronary artery bypass graft (CABG) surgery in the study. The primary outcome was to detect the sensitivity and specificity of SI to predict the occurrence of major adverse cardiac events, occurrence of acute kidney injury (AKI) and the need for ventilator support for &gt;48 h. The secondary outcome was to correlate between SI and need of inotropic support, length of hospital stay and in-hospital mortality. The main findings of our study were the presence of a good correlation between SI and occurrence of postoperative cardiovascular (CV) collapse, AKI and prolonged postoperative mechanical ventilation after on-pump CABG as primary outcomes as well as the presence of a significant correlation between the occurrence of in-hospital mortality and morbidities and high values of SI as secondary outcomes. We believe that SI has a good prediction of postoperative CV collapse, AKI and prolonged postoperative mechanical ventilation &gt;48 h.

egyptian journal of anaesthesia

Correlation between shock index and postoperative outcomes for patients undergoing on-pump coronary artery bypass graft surgery (an observational study)