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Table 4 Regional differences in triage and outcome of patients treated with extracorporeal cardiopulmonary resuscitation or Impella for refractory cardiac arrest

From: Mechanical circulatory support for refractory out-of-hospital cardiac arrest: a Danish nationwide multicenter study

Variable

Aalborg University Hospital

(n = 34)

Aarhus University

Hospital

(n = 138)

Odense University Hospital

(n = 55)

Copenhagen University Hospital

(n = 32)

P-value

No. of MCS/mio-inhabitants*year

11.6

11.2

8.9

2.8

 < 0.001

Age < 65 years

26 (76)

113 (82)

51 (93)

31 (97)

0.03

Initial presenting rhythm

    

0.003

Shockable VT/VF

19 (56)

82 (59)

44 (80)

28 (88)

 

PEA

11 (32)

38 (28)

4 (7)

4 (13)

 

Asystole

3 (9)

18 (13)

7 (13)

0 (0)

 

Unknown

1 (3)

0 (0)

0 (0)

0 (0)

 

Witnessed arrest

31 (91)

114 (83)

49 (89)

29 (91)

0.38

Bystander CPR

31 (91)

134 (97)

52 (95)

29 (91)

0.42

No-flow ≥ 10 min

0 (0)

10 (7)

0 (0)

1 (3)

0.07

Pre-hospital low-flow (min)

60 [43–77]

75 [60–90]

77 [65–99]

60 [48–70]

 < 0.001

Total low-flow (min)

90 [62–110]

105 [88–125]

119 [105–127]

94 [81–130]

 < 0.001

Distance to center ≥ 100 km

2 (6)

21 (15)

19 (35)

0 (0)

0.001

30-day survival

5 (15)

38 (28)

14 (25)

9 (28)

0.41

  1. Abbreviations: MCS Mechanical circulatory support; VT Ventricular tachycardia; VF Ventricular fibrillation; PEA Pulseless electrical activity; CPR Cardio pulmonary resuscitation
  2. Values are stated as medians and interquartile range (IQR) or numbers and percentages. A p value of < 0.05 is considered significant