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Annals of Intensive Care

Table 1 Baseline characteristics of the 4445 study patients

From: Factors associated with circulatory death after out-of-hospital cardiac arrest: a population-based cluster analysis

Characteristics

Overall population

N = 4445

Nonsurvivorsa

N = 2977

Survivorsa

N = 1468

P valueb

Males, n (%)

3112 (70)

1999 (67)

1113 (76)

< 0.001

Age (years), median [IQR]

62 [51–73]

64 [53–75]

57 [48–68]

< 0.001

Witnessed, n (%)

4001 (90)

2591 (87)

1410 (96)

< 0.001

Bystander CPR, n (%)

2985 (75)

1798 (69)

1187 (85)

< 0.001

OHCA in a public area, n (%)

1871 (42)

1023 (34)

848 (58)

< 0.001

Shockable rhythm, n (%)

2217 (53)

1053 (37)

1164 (85)

< 0.001

No-flow timec (min), median [IQR]

3.0 [0.0–8.0]

5.0 [0.0–10.0]

1.0 [0.0–5.0]

< 0.001

Low-flow timed (min), median [IQR]

22 [14–35]

26 [17–40]

15 [10–23]

< 0.001

ST-segment elevation, n (%)

1602 (45)

866 (38)

736 (56)

< 0.001

Epinephrine dose (mg), median [IQR]

2.0 [0.0–4.0]

3.0 [1.0–5.0]

0.0 [0.0–1.0]

< 0.001

TTM, n (%)

2300 (53)

1425 (49)

875 (62)

< 0.001

Vasoactive drugs, n (%)

2735 (66)

2060 (75)

675 (49)

< 0.001

Successful angioplasty, n (%)

1201 (27)

614 (21)

587 (40)

< 0.001

Lactate (mmol/L), median [IQR]

5.8 [2.9–10.6]

7.9 [4.4–12.5]

2.9 [1.7– 4.8]

< 0.001

Creatinine (µmol/L), median [IQR]

112 [86–145]

126 [98–162]

92 [75–116]

< 0.001

Patients treated with ECMO, n (%)

528 (12)

442 (15)

86 (6)

<0.001 

  1. CPR cardiopulmonary resuscitation, ROSC return of spontaneous circulation, TTM targeted temperature management
  2. aSurvival was determined at discharge from the intensive care unit
  3. bχ2 test for categorical variables, Student’s t-test or Wilcoxon’s rank sum test for continuous variables
  4. cNo-flow time was the time from collapse to the initiation of cardiopulmonary resuscitation
  5. dLow-flow time was the time from the initiation of cardiopulmonary resuscitation to the return of spontaneous circulation
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