Table 1

 Results of arterial and venous blood gas analyses (n = 95)

ParametersABG (mean (SD))VBG (mean (SD))Bland–Altman 95% limits of agreement
ABG, arterial blood gas, CI, confidence interval; Pco2, partial pressure of carbon dioxide; Po2, partial pressure of oxygen; VBG, venous blood gas.
pH7.384 (0.124)7.369 (0.12)0.13 to −0.1
Pco2 (mm Hg)39 (15.11)42 (20.71)6.8 to −7.6
Bicarbonate (mEq/l)23.58 (8.86)24.32 (9.43)4.3 to −5.8
Po2 (mm Hg)115 (64.5)50 (24.39)145.3 to −32.9