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Table 1 Patients’ background

From: The lactate clearance calculated using serum lactate level 6 h after is an important prognostic predictor after extracorporeal cardiopulmonary resuscitation: a single-center retrospective observational study

  All cases
n = 64
Low-clearance group
n = 45
High-clearance group
n = 19
p value
Age 70.8 (58.5–77.9) 71.7 (63.8–77.3) 64.1 (50.6–78.5) 0.30
Female (%) 17 (27) 14 (31) 3 (18) 0.35
Height cm 165 (157–172) 164 (156–170) 164 (156–170) 0.08
Weight kg 63 (54–72) 61 (53–72) 65 (55–75) 0.45
BMI 23 (21–25) 23 (21–25) 23 (21–26) 0.88
Diabetes (%) 23 (36) 17 (38) 6 (32) 0.78
Hypertension (%) 34 (53) 25 (56) 9 (47) 0.59
Dyslipidemia (%) 20 (31) 12 (27) 8 (42) 0.25
Current smoke (%) 19 (30) 10 (22) 9 (47) 0.07
Hemodialysis (%) 4 (6.3) 2 (4.4) 2 (11) 0.58
Prior PCI (%) 13 (20) 10 (22) 3 (16) 0.56
Prior CABG (%) 6 (9.4) 4 (8.9) 2 (11) 1.00
OMI (%) 15 (23) 10 (22) 5 (26) 0.75
Initial rhythm     0.48
 VF/pulseless VT (%) 38 (59) 25 (56) 13 (68)  
 PEA/asystole (%) 26 (41) 20 (44) 6 (32)  
Location     0.42
 In-hospital (%) 45 (55) 23 (51) 12 (63)  
 Out-hospital (%) 29 (45) 22 (49) 7 (37)  
 CPR duration (min) 24 (12–45) 24 (16–46) 25 (10–46) 0.67
Laboratory data     
 pH 7.03 (6.92–7.15) 7.03 (6.89–7.14) 7.09 (6.92–7.20) 0.54
 Lactate mmol/L 11.8 (9.9–14.8) 11.7 (9.7–14.9) 12.8 (10.1–14.2) 0.74
 Total protein g/dL 5.2 (4.3–6.1) 4.9 (4.0–5.6) 5.7 (5.1–6.5) 0.02
 Albumin g/dL 2.9 (2.1–3.5) 2.5 (2.0–3.2) 3.3 (2.6–3.8) 0.01
 BUN mg/dL 19 (16–28) 20 (17–27) 19 (14–31) 0.59
 Creatinine mg/dL 1.1 (1.0–1.5) 1.1 (0.9–1.4) 1.1 (1.0–1.5) 0.74
 Total cholesterol mg/dL 129 (80–164) 98 (70–164) 142 (97–178) 0.15
 Low-density lipoprotein mg/dL 70 (55–109) 62 (54–105) 95 (70–127) 0.11
 High-density lipoprotein mg/dL 28 (20–35) 25 (18–33) 28 (24–40) 0.16
 Triglyceride mg/dL 71 (42–96) 58 (32–103) 84 (71–94) 0.26
 Hemoglobin g/dL 11.6 (9.5–13.8) 11.0 (8.3–13.9) 12.2 (11.2–13.6) 0.14
 White blood cell count 103/μL 124 (97–168) 121 (96–16) 137 (106–194 0.21
 Platelet 104/μL 16.7 (11.9–21.6) 14.8 (9.8–20.9) 21.3 (14.3–25.3) 0.02
 C-reaction protein mg/dL 0.19 (0.06–3.13) 0.19 (0.07–2.56) 0.16 (0.05–4.83) 0.91