Table 2

Characteristics of resuscitation and outcome

Number of patients (%)

Return of spontaneous circulation (n)

P value

Initial survival

Final survival

n

P value

n

P value

Time to initiation of cardiopulmonary resuscitation

<4 min

29 (78.3%)

20

0.215

16

0.037

3

0.470

>4 min

8 (21.6%)

3

1

0

First documented rhythm^a

Nonshockable

25 (56.8%)

12

0.025

6

0.005

0

0.073

Shockable

19 (43.1%)

16

13

3

First shock dose

2 J/kg

35 (83.3%)

23

0.686

15

1.0

2

0.430

>2 J/kg

7 (16.6%)

4

3

1

Second shock dose

2 J/kg

15 (44%)

12

0.07

9

0.01

1

0.441

>2 J/kg

19 (56%)

9

3

0

Number of shocks

1–3

27 (62.8%)

16

0.342

14

0.221

2

1.0

>3

16 (37.2%)

12

5

1

Duration of cardiopulmonary resuscitation

<10 minutes

5 (11.6%)

5

0.012

5

0.0001

1

0.067

10–30 minutes

11 (25.5%)

10

10

2

>30 minutes

27 (62.7%)

13

4

0

^aNonshockable includes asystole, bradycardia, atrioventricular block, and pulseless electrical activity; shockable includes ventricular fibrillation and pulseless ventricular tachycardia.

Rodríguez-Núñez et al. Critical Care 2006 10:R113   doi:10.1186/cc5005