Table 2. Arrest and procedural characteristics.

	Underweight (n = 14)	Normal (n = 118)	Overweight (n = 53)	Obese (n = 15)	p-value
Arrest cause					0.99
Cardiogenic origin	11 (78.6)	90 (76.3)	41 (77.4)	12 (80.0)
Sepsis	1 (7.1)	12 (10.2)	5 (9.4)	1 (6.7)
Hypovolemia	0	12 (10.2)	6 (11.3)	1 (6.7)
Respiratory deterioration	2 (14.3)	1 (0.8)	0	0
Neurogenic origin	0	1 (0.8)	0	0
Unknown	0	2 (1.7)	1 (1.9)	1 (6.7)
First monitored arrest rhythm					0.29
Asystole	3 (21.4)	17 (14.4)	9 (17.0)	2 (13.3)
PEA	7 (50.0)	61 (51.7)	34 (64.2)	11 (73.3)
VF/Pulseless VT	4 (28.6)	40 (33.9)	10 (18.9)	2 (13.3)
Location of ECMO cannulation					0.40
Intensive Care Unit	8 (57.1)	56 (47.5)	32 (60.4)	4 (26.7)
Catheterization laboratory	4 (28.6)	29 (24.6)	11 (20.8)	7 (46.7)
General ward	1 (7.1)	7 (5.9)	2 (3.8)	1 (6.7)
Emergency department	1 (7.1)	17 (14.4)	6 (11.3)	2 (13.3)
Operating room	0	9 (7.6)	2 (3.8)	1 (6.7)
ROSC before ECMO pump on	5 (35.7)	44 (37.3)	16 (30.2)	4 (26.7)	0.74
CPR to ECMO pump on time (min)	42 (16–75)	35 (8–89)	35 (5–84)	35 (5–91)	0.46
CRRT	4 (28.6)	42 (35.6)	23 (43.4)	4 (26.7)	0.55
IABP	1 (7.1)	23 (19.5)	7 (13.2)	0	0.16
Vasopressor support	11 (78.6)	94 (79.7)	38 (71.7)	8 (53.3)	0.13
Initial SOFA score after ECPR	12.00 (5–16)	13.00 (6–19)	14.00 (5–20)	12.00 (10–18)	0.10

BMI, body mass index; PEA, pulseless electrical activity; VF, ventricular fibrillation; VT, ventricular tachycardia; ROSC, return of spontaneous circulation; ECMO, extracorporeal membrane oxygenation; CPR, cardiopulmonary resuscitation; CRRT, continuous renal replacement therapy; IABP, intra-aortic balloon pump; SOFA, Sequential Organ Failure Assessment; ECPR, ECMO-assisted cardiopulmonary resuscitation

Values are n (%) or median (Interquartile range).