Shock on Admission as a Potential Marker for ICU Mortality of Cardiac Arrest Patients

To investigate the association of shock on admission with predicting intensive care unit (ICU) mortality, hospital mortality, and neurological outcomes of post cardiac arrest patients.This was a retrospective study of cardiac arrest (CA) patients admitted to ICU. Student's t test and Chi-square test were performed to compare the difference of non-shock and shock group. Multivariable regression analysis was performed to investigate shock and its association with ICU mortality, hospital mortality, and neurologic outcomes and linear regression analysis to explore its correlation with length of stay in hospital.A total of 374 CA patients were analyzed, with 200 (53.5%) patients in the presence of shock on admission. Shock was significantly associated with higher ICU mortality (OR 2.42, 95% CI 1.60 to 3.68; P < 0.001), hospital mortality (OR 2.33, 95% CI 1.54 to 3.54; P < 0.001), and more unfavorable neurological outcomes (OR 1.98, 95% CI 1.30 to 3.02; P = 0.001). After adjusting for confounding factors, shock was still an independent predictor of ICU mortality (OR 2.40, 95% CI 1.30 to 4.43; P = 0.005).Shock on admission of CA patients was significantly associated with ICU mortality.