Statistically significantly lower levels of NSE were observed for patients who survived compared to patients who did not survive hospital discharge in all other time periods analyzed (Figure 6): 23.9 ± 13.46 vs. 44.99 ± 28.14 μg/L for measurements 12 h after cardiac arrest (SMD = −2.20; 95% CI: −3.51 to −0.88; p = 0.001). Here, ENO2 is linked to cardiac arrest.