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Table 1 Main characteristics of the patients (n = 51)

From: Extracorporeal life support following out-of-hospital refractory cardiac arrest

Variable Values Range
Mean age ± SD, yr 42 ± 15 13-70
Men, n (%) 46 (90%)  
Women, n (%) 5 (10%)  
Comorbidity, n (%)   
   Hypertension 6 (12%)  
   Diabetes mellitus 3 (6%)  
   Ischemic heart disease 11 (20%)  
   Other cardiac disease 10 (20)  
Site of cardiac arrest, n (%)   
   Home 19 (37%)  
   Work 6 (12%)  
   Public 20 (39%)  
   Sport 6 (12)  
Initial rhythm, n (%)   
   Ventricular fibrillation 32 (63%)  
   Asystole 15 (29%)  
   Pulseless rhythm 4 (8%)  
Defibrillation   
   Patients receiving shock, n (%) 37 (72%)  
   Number of shocks, n (25th to 75th IQR) 4 (2 to 6) 1-20
Epinephrine   
   Patients receiving epinephrine, n (%) 51 (100%)  
   Dose (mg) 13 (10 to 20) 2-100
Mean end tidal CO2 ± SD, mmHg 22 ± 12 0-50
Delay, median (25th to 75th IQR)   
   Fall to basic CPR, min 3 (1 to 6) 0-22
   Fall to advanced CPR, min 12 (5 to 23) 0-40
   Fall to automated CPR, min 41 (30 to 55) 15-110
   Fall to ICU admission, min 90 (65 to 115) 48-175
   Fall to ECLS onset, min 120 (102 to 149) 75-195
Biological measurement   
   Arterial pH 6.93 ± 0.17 6.56-7.25
   Mean blood lactate ± SD, mM L-1 19.9 ± 6.7 7.7-40.8
   Mean arterial bicarbonate ± SD, mM L-1 16.5 ± 12.1 1.9-58.7
   Mean PaO2 ± SD, mmHg 135 ± 129 6-489
   Mean PaCO2 ± SD, mmHg 69 ± 25 19-128
   Mean blood potassium ± SDa, mM L-1 5.1 ± 1.7 2.7-10.5
   Mean serum creatinine ± SD, μM L-1 129 ± 30 51-275
   Mean prothrombin time, % 39 ± 16 11-66
   Median fibrinogene, g L-1 (25th to 75th IQR) 1.3 (<0.6 to 1.6) <0.6-3.6
   Mean hemoglobin ± SD, g L-1 109 ± 25 59-169
   Median troponin Ic, μg L-1 (25th to 75th IQR) 3.98 (0.93 to 85.5) 0-669.0
   Median protein S100b, μg L-1 (25th to 75th IQR) 4.2 (2.4 to 10.4) 0-36.0
  1. CPR, cardiopulmonary resuscitation; ECLS, extracorporeal life support; ICU, intensive care unit; IQR, interquartile range; PaCO2, partial pressure of carbon dioxide; PaO2, partial pressure of oxygen; troponin Ic, cardiac troponin I.
  2. aBlood potassium could not be measured in four patients because of hemolysis; bProtein S100 was measured in only 27 patients.