Table 1 Patient characteristics before ICU admission

Age, years

53 (45–66)

55 (55–60)

48 (36–74)

Male

28/36 (78%)

21/26 (81%)

7/10 (70%)

External temperature, ° C

24.3 (22.0–26.0)

24.4 (22.3–27.1)

24.0 (17.8–25.0)

Context

  Alcohol intoxication

15/36 (42%)

11/26 (42%)

4/10 (40%)

  Drug intoxication

3/36 (8.3%)

2/26 (7.7%)

1/10 (10%)

  Attempted suicide

6/36 (17%)

1/26 (3.8%)

5/10 (50%)

  Social precariousness

31/36 (86%)

25/26 (96%)

6/10 (60%)

  In-house hypothermia

3/36 (8.3%)

3/26 (12%)

0/10 (0%)

  Outside hypothermia

33/36 (92%)

23/26 (89%)

10/10 (100%)

Chronic psychiatric disorder

  Alcoholism

18/36 (50%)

17/26 (65%)

1/10 (10%)

  Psychosis

5/36 (14%)

4/26 (15%)

1/10 (10%)

  Depression

9/36 (25%)

5/26 (19%)

4/10 (40%)

  Cognitive disorder

3/36 (8.3%)

2/26 (7.7%)

1/10 (10%)

SAPS II

86 (77–93)

83 (74–93)

89 (86–93)

Initial rhythm

  Ventricular fibrillation

23/36 (64%)

20/26 (77%)

3/10 (30%)

  Asystole

13/36 (36%)

6/26 (23%)

7/10 (70%)

No-Flow > 5 min

21/35 (60%)

13/26 (50%)

9/9 (100%)

  Witnessed cardiac arrest

4/21 (19%)

0/13 (0%)

4/9 (44%)

  Unwitnessed cardiac arrest

17/21 (81%)

13/13 (100%)

5/9 (56%)

No-Flow time ≤ 5 min

14/35 (40%)

13/26 (50%)

1/9 (11%)

Low-Flow time, min

83 (63–97)

83 (64–100)

82 (64–96)

Epinephrine administration

36/36 (100%)

26/26 (100%)

10/10 (100%)

Amiodarone administration

10/36 (28%)

10/26 (39%)

0/10 (0%)

External cardioversion, shocks

3 (0–7)

5 (2–9)

1 (0–3)

Medical indication for ECPR

  Refractory cardiac arrest

36/36 (100%)

26/26 (100%)

10/10 (100%)

ECPR setting

  Prehospital

17/36 (47%)

13/26 (50%)

4/10 (40%)

  Inhospital

19/36 (53%)

13/26 (50%)

6/10 (60%)