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Table 2 Comparison of the characteristics between the mECPR and mCCPR groups

From: An optimal transition time to extracorporeal cardiopulmonary resuscitation for predicting good neurological outcome in patients with out-of-hospital cardiac arrest: a propensity-matched study

 

mECPR (n = 52)

mCCPR (n = 52)

P-value

Age, years

54 (41 to 69)

54 (42 to 68)

0.871

Male : female, n

40 : 12

38 : 14

0.821

Pre-existing comorbidity, n (%)

   

 Hypertension

13 (25.0)

12 (23.1)

1.000

 Cardiovascular disease

15 (28.8)

11 (21.2)

0.497

 Chronic pulmonary disease

1 (1.9)

0 (0.0)

1.000

 Neurologic disease

3 (5.8)

4 (7.7)

1.000

 Chronic liver disease

1 (1.9)

2 (3.8)

1.000

 Chronic kidney disease

1 (1.9)

3 (5.8)

0.618

 Diabetes

11 (21.2)

6 (11.5)

0.289

 Malignancy

1 (1.9)

2 (3.8)

1.000

Number of pre-existing comorbidities

1 (0 to 2)

1 (0 to 1)

0.695

Comorbidity score

0 (0 to 1)

0 (0 to 1)

0.692

Witnessed, n (%)

42 (80.8)

42 (80.8)

1.000

Bystander CPR, n (%)

22 (42.3)

22 (30.8)

1.000

First documented arrest rhythm, n (%)

  

0.639

 VF/VT

31 (59.6)

29 (55.8)

0.901

 PEA

8 (15.4)

8 (15.4)

 

 Asystole

13 (25.0)

15 (28.8)

 

Arrest to CPR start, minutes

7.0 (0.3 to 12.8)

7.0 (5.0 to 10.0)

0.507

CPR duration, minutes

62.5 (49.0 to 88.0)

60.5 (40.0 to 83.5)

0.387

 Pre-hospital CPR duration

13.0 (7.0 to 17.0)

13.0 (9.3 to 16.8)

0.677

 In-hospital CPR duration

47.5 (35.3 to 76.8)

48.0 (25.3 to 71.0)

0.550

Presumed etiology of arrest, n (%)

  

1.000

 Cardiac

49 (94.2)

49 (94.2)

 

 Suspected ACS

44 (84.6)

46 (88.5)

 

 Non-cardiac

3 (5.8)

3 (5.8)

 

At the time of admission to ED

   

 SAPS II*

91 (87 to 98)

91 (88 to 96)

0.695

 Arterial pH*

6.98 (6.86 to 7.05)

6.97 (6.90 to 7.05)

0.487

 Serum lactate*

11.6 (8.6 to 15.3)

10.8 (8.8 to 15.0)

0.460

Any ROSC events during CPR, n (%)

16 (30.8)

17 (32.7)

1.000

  1. Data are shown as median (IQR) or number (%). *Measured in 48 mECPR and 47 mCCPR patients. CPR, cardiopulmonary resuscitation; ECPR, extracorporeal CPR; CCPR, conventional CPR; VF, ventricular fibrillation; VT, ventricular tachycardia; PEA, pulseless electrical activity; ED, emergency department; ACS, acute coronary syndrome; SAPS, simplified acute physiologic score; ROSC, return of spontaneous circulation.