| Venturi before (No. =) | Venturi after (No. =) | Paired t-test | |||
Mean | SD | Mean | SD | T | P-value | |
PH | 7.403 | 0.095 | 7.393 | 0.099 | 1.530 | 0.142 |
PCO2 | 36.15 | 9.080 | 38.7 | 11.805 | −2.091 | 0.050 |
HCO3 | 22.5 | 3.501 | 23.25 | 3.611 | −5.251 | 0.000 |
PO2 | 65.25 | 12.353 | 80.75 | 24.174 | −3.568 | 0.002 |
SO2 | 89.95 | 3.017 | 93.25 | 4.689 | −3.789 | 0.001 |