Table 1.

Patients’ background

	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