Table 6 Comparison of characteristics and values of PetCO₂ between patients with ROSC and without ROSC in nonshockable initial rhythm in cardiac arrest

Age (years)

59.6 ± 12.9

60.5 ± 12.9

0.45

Initial PetCO₂ (kPa [mmHg])

3.7 ± 1.9 (27.8 ± 14.3)

3.1 ± 2.6 (23.3 ± 19.6)

0.02

1 minute PetCO₂ (kPa [mmHg])

2.8 ± 1.6 (21.1 ± 13.2)

2.7 ± 1.4 (20.3 ± 11.2)

0.44

Average PetCO₂ (0 to 10 minutes; kPa [mmHg])

2.8 ± 0.9 (22.2 ± 6.8)

1.1 ± 0.4 (7.8 ± 3.8)

< 0.001

10 minute PetCO₂ (kPa [mmHg])

3.3 ± 1.1 (24.8 ± 7.8)

1.2 ± 0.5 (8.2 ± 3.6)

<0.001

Average 11 to 15 minute PetCO₂ (kPa [mmHg])

3.2 ± 0.8 (24.1 ± 6.3)

1.0 ± 0.3 (7.7 ± 2.6)

<0.001

15 minute PetCO₂ (kPa [mmHg])

3.6 ± 0.9 (27.1 ± 7.2)

1.1 ± 0.4 (7.9 ± 3.5)

<0.001

20 minute PetCO₂ (kPa [mmHg])

4.4 ± 1.2 (33.1 ± 9.1)

0.9 ± 0.3 (9.2 ± 2.7)

<0.001

Max PetCO₂ (kPa [mmHg])

5.4 ± 1.5 (40.1 ± 12.3)

1.8 ± 0.6 (15.6 ± 4.4)

<0.001

Final PetCO₂ (kPa [mmHg])

3.6 ± 0.9 (27.3 ± 7.1)

0.9 ± 0.3 (7.3 ± 2.5)

<0.001