Timing of brain computed tomography for predicting neurological prognosis in comatose cardiac arrest survivors: a retrospective observational study

Gan-nan Wang, Zhong-man Zhang, Wen Chen, Xiao-quan Xu, Jin-song Zhang

Table 2. Comparison of CT parameters between different outcome groups by early (within 24 h) and late (24 h to 7 d) CTs

Parameters Early CT (< 24 h) Late CT (24 h to 7 d) Good-outcome group (n=26) Poor-outcome group (n=68) P-value Good-outcome group (n=26) Poor-outcome group (n=68) P-value Density of ROI, HU PU 34.1 (33.0-36.0) 32.1 (28.2-35.9) 0.078 33.5 (28.3-35.8) 29.0 (26.0-32.0) 0.028 PLIC 27.0 (24.4-30.0) 28.0 (22.6-29.7) 0.880 25.5 (21.3-26.9) 25.0 (22.5-28.0) 0.388 GWR Basal ganglia 1.22 (1.16-1.29) 1.17 (1.10-1.23) 0.032 1.28 (1.23-1.35) 1.12 (1.08-1.18) <0.001 Simplified 1.24 (1.21-1.35) 1.18 (1.12-1.27) 0.052 1.33 (1.25-1.40) 1.14 (1.08-1.22) <0.001 pCSFV 0.040 (0.034-0.077) 0.048 (0.030-0.070) 0.824 0.074 (0.047-0.107) 0.038 (0.019-0.075) 0.010