Table 3 Expired gas analysis data
| Â | Unit | Before CO2 therapy | During CO2 therapy | Difference between the means | 95%CI for the difference |
|---|---|---|---|---|---|
ETCO2 | % | 4.78 (4.16–5.59) | 4.76 (4.28–5.51) | −0.02 (− 0.34 to 0.35) | [−0.13 to 0.09] |
ETO2 | % | 16.05 (4.57–17.43) | 16.08 (14.08–17.09) | 0.03 (−0.96 to 0.95) | [−0.21 to 0.28] |
R | N/A | 0.98 (0.83–1.25) | 1.00 (0.79–1.23) | 0.02 (−0.06 to 0.21) | [−0.02 to 0.06] |
VCO2 | mL/min | 279.58 (136.36–570.26) | 280.05 (54.75–575.90) | 0.47 (− 116.0 to 93.08) | [−22.66 to 23.61] |
VE | L/min | 9.48 (5.99–15.30) | 9.47 (2.20–15.20) | −0.01 (−4.54 to 3.30) | [− 0.85 to 0.82] |
VE/VCO2 | N/A | 38.74 (20.54–59.23) | 39.71 (23.26–61.19) | 0.97 (−7.48 to 12.58) | [−1.38 to 3.32] |
VE/VO2 | N/A | 36.82 (20.39–49.54) | 38.20 (26.04–49.56) | 1.39 (−8.02 to 12.88) | [−1.51 to 4.29] |
VO2 | mL/min | 274.04 (63.67–499.26) | 272.64 (53.00–518.14) | −1.40 (− 105.4 to 144.33) | [−32.32 to 29.52] |