Table 3

End-tidal pressure of carbon dioxide and mean arterial blood pressure in two groups of cardiac arrest patients

Variables
Epinephrine group
Vasopressin group
p valuea

Median of petCO2 reading
16
15
0.86
Interquartile range
5–26
6–23

Average petCO2 (patients with ROSC)
2.12 ± 0.51
3.6 ± 0.86
< 0.01
Average petCO2 (patients without ROSC)
0.92 ± 0.28
1.78 ± 0.58
< 0.01
Initial petCO2 (patients with ROSC)
2.24 ± 0.81
2.13 ± 0.72
0.87
Initial petCO2 (patients without ROSC)
0.85 ± 0.64
1.05 ± 0.64
0.48
Final petCO2 (patients with ROSC)
2.95 ± 0.42
4.68 ± 1.1
< 0.01
Final petCO2 (patients without ROSC)
0.78 ± 0.52
0.88 ± 0.38
0.84
Average initial MAP
74.6 ± 11.3
92.4 ± 9.7
< 0.01
Average final MAP
80.3 ± 12.4
105.8 ± 16.1
< 0.01

aBy Wilcoxon rank sum test. MAP, mean arterial blood pressure (in millimeters of mercury); petCO2, end-tidal pressure of carbon dioxide (in kilopascals); ROSC, restoration of spontaneous circulation.

Mally et al. Critical Care 2007 11:R39   doi:10.1186/cc5726