Maayke Hunfeld

123 Cause of death The median age was 53 months and 64% were male. Of these 113 children, 51 (44%) survived to hospital discharge. Of the 62 (56%) nonsurvivors, 60 (97%) died in the PICU and 2 in the general ward. Causes of death were as follows: BD (18/62; 29%), WLST- Neuro (42/62; 67%), WLST-Cardiopulmonary (1/62; 2%) and recurrent CA (1/62; 2%). In twelve patients who died due to WLST-Neuro (12/42; 29%), other reasons contributed to the decision to withdraw treatment (Recurrent CA or WLST-Cardiopulmonary). Of the 22 children on ECMO (n=11 Extracorporeal cardiopulmonary resuscitation, n=11 ECMO post-CA), 14 (64%) died. Causes of death were as follows: WLST-Neuro (7/14; 50%), WLST-Cardiopulmonary (1/14; 7%), and a combined cause of WLST-Neuro and WLST-Cardiopulmonary (6/14; 43%). Survivors vs. Non-Survivors Basic and CPR-event characteristics of survivors (n=51) and nonsurvivors (n=62) are presented in table 1 . Survivors more often had a witnessed arrest, a shorter CPR duration with lower number of epinephrine doses and more often an initial shockable rhythm compared with nonsurvivors, all statistically significant. The first pH was significantly higher in the survivors with a lower first lactate. Furthermore, arrhythmia as a cause of CPR occurred more commonly in survivors, whereas trauma was more common in nonsurvivors. Post-ROC characteristics of survivors and nonsurvivors are presented in table 2 . Between admission and 72 hours post-CA, there was a significant difference in the presence of pupillary light reflexes in favor of survivors and survivors scored higher on the GCS motor response. Although not always statistically significant, differences were found regarding triggering mechanical ventilator, elicitable corneal and oculocephalic reflexes between the two groups. TTM was more often applied in nonsurvivors. Nonsurvivors more often had ischemia or edema on brain MRI or CT compared with survivors. The median PCPC score of survivors at hospital discharge was 2 (IQR, 1-3). Non-survivors WLST-Neuro vs. BD: basic, CPR-event and Post-ROC Characteristics Basic and CPR-event characteristics in WLST-Neuro (n=42) and BD patients (n=18) are presented in table 1 . No significant differences were found. Post-ROC characteristics in WLST-Neuro (n=42) and BD (n=18) groups are presented in table 2 . 4