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Table 1 Study population demographics

From: Clinical experience of whole-body computed tomography as the initial evaluation tool after extracorporeal cardiopulmonary resuscitation in patients of out-of-hospital cardiac arrest

Demographic featuresAll, N = 136Immediate CT group,
N = 93
Non immediate CT group, N = 43P value
Male Gender, n (%)115 (84.6)84 (90.3)31 (72.1)0.006
Female Gender, n (%)21 (15.4)9 (9.7)12 (27.9) 
Age (year)
 Mean ± SD53.94 ± 12.754.7 ± 12.252.3 ± 13.80.31
 Median (IQR)53.85 (20.0–78.8)54.4 (20–78)53.4 (23–78)0.43
 Age > 60 years, n (%)46 (33.8)34 (36.6)12 (27.9)0.33
 Age > 75 years, n (%)4 (2.9)3 (3.3)1 (2.3)0.78
Comorbidities, n (%)
 Diabetes mellitus41 (30.2)26 (28.0)15 (34.9)0.42
 Hypertension70 (51.5)47 (50.5)23 (53.5)0.75
 Liver cirrhosis4 (2.9)3 (3.2)1 (2.3)0.77
 Coronary artery disease46 (33.8)32 (34.4)14 (32.6)0.83
 Peripheral arterial disease8 (5.9)3 (3.2)5 (11.6)0.05
 NYHA class 3/434 (25)22 (23.7)12 (27.9)0.60
 COPD4 (2.9)1 (1.1)3 (7.0)0.06
 CKD19 (14.0)8 (8.6)11 (25.6)0.008*
 CKD stage 4/ 510 (7.4)4 (4.3)6 (14.0)0.05*
 CKD on dialysis8 (5.9)4 (4.3)4 (9.3)0.25
 Stroke11 (8.1)6 (6.5)5 (11.6)0.31
Causes of cardiac arrest, n (%)
 Acute myocardial infarction85 (62.5)58 (62.4)27 (62.8)0.96
 Chronic heart failure10 (7.4)6 (6.5)4 (9.3)0.56
 Dissecting aortic aneurysm4 (2.9)3 (3.2)1 (2.3)0.77
 Cerebral hemorrhage2 (1.5)2 (2.2)0 (0)0.33
 Pulmonary embolism3 (2.2)3 (3.2)0 (0)0.24
 Arrhythmias9 (6.6)6 (6.5)3 (7.0)0.91
 Acute myocarditis2 (1.5)0 (0)2 (4.7)0.04
 Cardiac tamponade1 (0.7)1 (1.1)0 (0)0.50
 Respiratory failure1 (0.7)1 (1.1)0 (0)0.50
 Others19 (14.0)13 (14.0)6 (14.0)1.00
Initial Lab data (mean ± SD)
 Creatinine (mg/dL)1.96 ± 2.081.92 ± 1.812.06 ± 2.600.73
 eGFR (mL/min/1.73m2)68.7 ± 41.764.7 ± 30.777.7 ± 59.30.10
 Lactate (mmol/L)13.0 ± 5.7612.9 ± 5.7213.3 ± 5.940.74
Charlson’s Comorbidity Index (CCI)
 Mean ± SD3.94 ± 2.713.68 ± 2.554.51 ± 3.020.10
 Median (IQR)3.0 (2.0–5.0)3.0 (2.0–5.0)4.0 (3.0–6.0)0.15
Low flow duration (min)
 Mean ± SD65.9 ± 108.775.4 ± 129.945.4 ± 19.30.03*
 Median (IQR)49.5 (38.0–60.0)53 (41.0–62.5)42.0 (32.0–54.3)0.004*
First Documented Rhythm, n (%)
 Pulseless VT / VF90 (66.2)61 (65.6)29 (67.4)0.83
 PEA / Asystole46 (33.8)32 (34.4)14 (32.6) 
ECMO to CT time (min)
 Mean ± SDN/A69.1 ± 24.84N/AN/A
 Median (IQR)N/A65.0 (53.99 to 82.24)N/AN/A
  1. SD standard deviation, IQR Interquartile range, NYHA New York Heart Association, COPD Chronic obstructive pulmonary disease, CKD Chronic kidney disease, eGFR estimated glomerular filtration rate, VT Ventricular tachycardia, VF Ventricular fibrillation, PEA pulseless electrical activity