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Table 1 Data of the OHCA patients

From: Point-of-care testing in out-of-hospital cardiac arrest: a retrospective analysis of relevance and consequences

 

Total

POCT

No POCT

 

Source data

n

263

98 (37%)

Arterial 35 (36%)/venous 63 (64%)

165 (63%)

 

Mean age (years)

70 (± 13)

69 (± 14)

70 (± 13)

p = 0.86

Gender

185 male (70%)

78 female (30%)

73 male (74%)

25 female (26%)

112 male (68%)

53 female (32%)

p = 0.26

Mean number patients with known pre-existing diseases

1.3 (± 0.9)

1.2 (± 0.9)

1.3 (± 1.0)

p = 0.15

Mean PES

2.57 (± 0.8)

2.5 (± 0.8)

2.6 (± 0.7)

p = 0.13

Observed collapse

149 (57%)

61 (62%)

88 (53%)

p = 0.20

Initial VF/pVT

69 (26%)

38 (39%)

31 (19%)

p < 0.001

Initial Asys/PEA

194 (74%)

60 (61%)

134 (81%)

p < 0.001

Cardiac cause suspected

181 (69%)

72 (73%)

109 (66%)

p = 0.21

POCT

pH 7.35–7.45

 

4 (4%)

  

pH < 7.35

 

91 (93%)

  

pH < 7.35 + pCO2 > 50 [BE in norm]

 

2 (2%)

  

pH < 7.35 + BE <  − 2 [pCO2 in norm]

 

13 (13%)

  

pH < 7.35 + pCO2 > 50 + BE <  − 2

 

68 (69%)

  

pH < 7.2

 

77 (79%)

  

pH < 7.2 + BE <  − 5 [regardless of CO2]

 

62 (63%)

  

K+  > 5.2/K+  < 3.5 mmol/l

 

33 (34%)

  

K+  > 5.2 mmol/l

 

22 (23%)

  

K+  < 3.5 mmol/l

 

11 (11%)

  

K+  > 6.0/K+  < 2.5 mmol/l

 

17 (17%)

  

K+  > 6.0 mmol/l

 

16 (16%)

  

K+  < 2.5 mmol/l

 

1 (1%)

  

Lactate > 2.5 mmol/l

 

90 (92%)

  

Glucose (1 mg/dl = 0.056 mmol/l)

 

 > 200 mg/dl: 58 (59%)

  

 < 50 mg/dl: 2 (2%)

  

Specific therapy

Bicarb 8.4%

84 (32%)

61 (62%)

23 (14%)

p < 0.001

Bicarb 8.4% in cases where, pH < 7.35 + BE <  − 2

 

11 (18%)

  

Bicarb 8.4% in cases where, pH < 7.2 + BE <  − 5

 

50 (82%)

  

K+-specific therapy

22 (8%)

22 (22%)

0 (0%)

 

Calcium 10%

 

8 (36%)

  

KCl 7.45%

 

14 (64%)

  

KCl 7.45% + Bicarb 8.4%

 

10 (71%)

  

Treatment time

Mean treatment time (min)

57 (± 19)

60 (± 17)

54 (± 20)

p = 0.07

Mean time to POCT (min)

 

37 (± 21)

  

POCT before ROSC

 

26 (± 15)

  

Outcome

ROSC

141 (54%)

72 (73%)

69 (42%)

p < 0.001

Hospital admission

163 (62%)

79 (81%)

84 (51%)

p < 0.001

With ROSC

122 (46%)

65 (82%)

57 (68%)

p < 0.001

Ongoing CPR

41 (16%)

14 (18%)

27 (32%)

p = 0.78

Discharged

55 (21%)

29 (30%)

26 (16%)

p = 0.01

  1. PES, pre-emergency status; VF, ventricular fibrillation; VT, ventricular tachycardia; Asys, asystole; PEA, pulseless electrical activity; pH, potentia hydrogenii; BE, base excess; K+, potassium; Bicarb, sodium hydrogen carbonate; KCl, potassium chloride; POCT, point-of-care testing;ROSC, return of spontaneous circulation