Table 4 Statistically significant correlation between ABG and VBG
Parameters | ABG (mean ± SD) | VBG (mean ± SD) | Absolute difference (mean ± SD) | P-value |
|---|---|---|---|---|
pH | 7.37 (0.11) | 7.34 (0.12) | − 0.03 (0.03) | < 0.001 |
pO2 (mmHg) | 87.76 (20.78) | 37.60 (12.80) | − 50.17 (21.81) | < 0.001 |
pCO2 (mmHg) | 32.76 (15.25) | 36.17 (16.02) | 3.41 (5.19) | < 0.001 |
HCO3 (mmol/L) | 18.57 (6.11) | 19.09 (6.27) | 0.52 (1.53) | < 0.001 |
Lactate (mmol/L) | 2.84 (2.70) | 2.97 (2.83) | 0.13 (0.82) | < 0.001 |
Sodium (mmol/L) | 139.09 (8.52) | 138.97 (8.77) | − 0.12 (3.40) | 0.365 |
Potassium (mmol/L) | 3.91 (0.71) | 3.92 (0.71) | 0.02 (0.31) | 0.114 |
Chloride (mmol/L) | 108.79 (7.93) | 108.70 (7.88) | − 0.10 (2.81) | 0.590 |
Ionized calcium (mmol/L) | 0.93 (0.20) | 0.91 (0.19) | − 0.01 (0.15) | 0.350 |
BUN (mg/dL) | 35.89 (22.15) | 35.73 (21.90) | − 0.16 (4.89) | 0.432 |
Base excess (mmol/L) | − 5.41 (5.78) | − 5.12 (5.90) | 0.29 (1.45) | 0.001 |
Arterial/alveolar oxygen ratio (a/A) | 0.87 (0.29) | 0.37 (0.41) | − 0.50 (0.26) | < 0.001 |
Oxygen saturation (%) | 95.93 (2.68) | 59.90 (19.11) | − 36.03 (19.16) | < 0.001 |