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Table 2 Demographics and quality of cardiopulmonary resuscitation (CPR) treated by physicians

From: Real-time audiovisual feedback system in a physician-staffed helicopter emergency medical service in Finland: the quality results and barriers to implementation

Characteristic

With Q-CPR (n = 52)

Without Q-CPR (n = 135)

p-Value*

Age, mean (SD), y

66 (17)

60 (20)

0.20

 Data not available

0

5

 

Male sex, No. (%)

35 (67)

97 (72)

0.54

Cardiac aetiology, No. (%)

42 (81)

89 (66)

0.05

Location of arrest, No. (%)

   

 Home

23 (44)

74 (55)

0.19

 Public

21 (40)

34 (25)

0.04

 Other

8 (15)

26 (19)

0.54

 Data not available

0

1

 

Cardiac arrest witnessed status, No. (%)

   

 Bystander witnessed

30 (58)

87 (64)

0.39

 EMS personnel witnessed

9 (17)

23 (17)

0.97

 Arrest not witnessed

13 (25)

25 (19)

0.32

FRU unit:

   

 Response interval in all cases, median (IQR), min

5 (2, 8)

6 (2, 10)

0.68

 Data not available

3

19

 

 Response interval in VF/VT cases, median (IQR), min

6 (4, 10)

7 (3, 10)

0.73

 Data not available

1

2

 

HEMS unit:

   

 Responded with helicopter, No. (%)

13 (25)

45 (33)

0.23

 Response interval (all), median (IQR), min

12 (10, 15)

12 (10, 15)

0.58

 Data not available (%)

3 (6)

2 (1)

 

 Response interval of helicopter, median (IQR), min

12 (10, 16)

17 (12, 24)

0.22

 Response interval of rapid response vehicle, median (IQR), min

12 (10, 15)

11 (9, 13)

0.49

Initial rhythm, No. (%)

   

 VF/VT

22 (42)

38 (28)

0.06

 Asystole

12 (23)

50 (37)

0.07

 PEA

18 (35)

44 (33)

0.79

 Data not available

0

3

 

Time from call to ROSC, median (IQR), min

26 (21, 29)

24 (15, 29)

0.24

Time from HEMS unit arrival to ROSC, median (IQR), min

12 (10, 15)

7 (5, 17)

0.05

Patient outcome, No. (%)

   

 Any ROSC

28 (54)

49 (36)

0.03

 Primary survival to ED/ICU

22 (42)

35 (26)

0.03

 Alive after 24 hours

18 (35)

29 (22)

0.06

 Discharged from hospital alive

8 (15)

22 (16)

0.88

 Data not available

0

2

 

Neurological outcome at 6 month all patient, No. (%)

   

 CPC 1-2

8 (15)

13 (10)

0.26

 CPC 3

0

0

 

 CPC 4-5

44 (85)

113 (84)

0.87

 Data not available

0

9

 
  1. Abbreviations: FRU First responding units, HEMS Helicopter emergency medical service, VF, ventricular fibrillation, VT Ventricular tachycardia, PEA Pulseless electrical activity, ROSC Return of spontaneous circulation, ED, Emergency department, ICU, Intensive care unit, CPC, Cerebral performance category.
  2. The data are presented as numbers and percentages of patients, as median and 25% to 75% interquartile range (IQR) or as mean and standard deviation (SD) as appropriate (non-normal or normal distribution respectively).
  3. *The differences between groups were analysed using chi-square test with continuity correction for categorical data and t test or Mann–Whitney test for continuous data as appropriate. No trauma related cardiac arrest patients were enrolled as by chance.
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Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine

ISSN: 1757-7241