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Arterial and central venous blood gas values (n = 190)
| Parameter | ABG (Mean ± SD) | VBG (Mean ± SD) | A-V Difference (Mean ± SD)a |
|---|---|---|---|
| pH | 7.370 ± 0.138 | 7.340 ± 0.134 | 0.027 ± 0.027 |
| Pco2 (mmHg) | 38.4 ± 12.4 | 42.3 ± 12.6 | −3.8 ± 4.3 |
| Bicarbonate (mEq/L) | 22.40 ± 7.60 | 23.20 ± 7.80 | −0.80 ± 1.58 |
Total between- + within-person SD. There was no significant between person heterogeneity in the A-V SD.
