Table 4 |
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|
Comparison of characteristics and values of PetCO2 between shockable and nonshockable initial rhythm for patients with cardiac arrest |
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|
Shockable (n = 304) |
Nonshockable (n = 433) |
P value |
|
|
|
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|
Age (years) |
59.5 ± 11.9 |
60.1 ± 12.9 |
0.55 |
|
Arrival (min [min-max]) |
8.6 ± 4.5 (1–22) |
9.9 ± 4.3 (2–29) |
0.03 |
|
Initial PetCO2 (kPa [mmHg]) |
2.2 ± 1.3 (16.6 ± 9.8) |
3.4 ± 2.4 (25.6 ± 18.1) |
<0.001 |
|
1 minute PetCO2 (kPa [mmHg]) |
3.3 ± 1.4 (24.8 ± 10.5) |
2.8 ± 1.5 (21.1 ± 11.3) |
<0.001 |
|
Average PetCO2 (0 to 10 minutes; kPa [mmHg]) |
2.3 ± 1.1 (17.3 ± 8.3) |
1.8 ± 1.2 (13.5 ± 0.9) |
<0.001 |
|
10 minute PetCO2 (kPa [mmHg]) |
2.7 ± 1.3 (20.3 ± 10) |
2.1 ± 1.3 (15.8 ± 10) |
<0.001 |
|
11–15 minutes PetCO2 (kPa [mmHg]) |
2.5 ± 1.2 (18.8 ± 9.1) |
1.9 ± 1.2 (14.3 ± 9.7) |
<0.001 |
|
15 minutes PetCO2 (kPa [mmHg]) |
2.9 ± 1.5 (21.8 ± 11.3) |
2.2 ± 1.4 (16.5 ± 10.5) |
<0.001 |
|
20 minutes PetCO2 (kPa [mmHg]) |
3.3 ± 1.8 (24.8 ± 13.5) |
2.4 ± 1.9 (18.1 ± 14.3) |
<0.001 |
|
Max PetCO2 (kPa [mmHg]) |
4.2 ± 2.1 (31.6 ± 15.8) |
3.3 ± 2.1 (24.8 ± 15.8) |
<0.001 |
|
Final PetCO2 (kPa [mmHg]) |
2.9 ± 1.5 (21.8 ± 11.3) |
2.1 ± 1.5 (15.8 ± 11.3) |
<0.001 |
|
|
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|
'Shockable' was defined as ventricular fibrillation or tachycardia and 'nonshockable' was defined as asystole or pulseless electrical activity. Unless otherwise stated, values are expressed as mean ± standard deviation. PetCO2, partial pressure of end-tidal carbon dioxide. |
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Kolar et al. Critical Care 2008 12:R115 doi:10.1186/cc7009 |
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