Table 2.
POCT and laboratory parameters of patient’s divided in two subgroups according pH-A. Student’s t-test for independent variables, *chi quadrat test. Abbreviations: SD, standard deviations; BMI, body mass index; pO2, oxygen partial pressure; pCO2, carbon dioxide partial pressure; HCO3−, bicarbonate; BE, base excess; K+, potassium; Na+, sodium; Ca2+, ionized calcium; Cl−, chloride; AG, uncorrected anion gap; Pi, phosphate; PTH, parathormone; eGFR, estimated glomerular filtration rate. *The index deltaAG/deltaHCO3− includes AG corrected to potassium and albumin.
| POCT and laboratory parameters | ||||
|---|---|---|---|---|
| pH-A ≤ 7.33 N = 52 | pH-A > 7.33 N = 63 | p | All study patients N = 115 | |
| pH-A | 7.28 ± 0.04 | 7.38 ± 0.03 | < 0.01 | 7.33 ± 0.06 |
| pCO2-A (mmHg) | 32.91 ± 4.9 | 35.72 ± 4.72 | < 0.01 | 34.45 ± 4.98 |
| pO2-A (mmHg) | 88.34 ± 17.05 | 83.42 ± 15.5 | > 0.05 | 85.65 ± 16.33 |
| HCO3−-A (mmol/l) | 15.53 ± 2.76 | 20.95 ± 3.08 | < 0.01 | 18.50 ± 3.99 |
| BE-A (mmol/l) | (−10.22 ± 2.81) | (−3.66 ± 2.91) | < 0.01 | (−6.63 ± 4.34 |
| K+-A (mmol/l) | 4.60 ± 0.71 | 4.26 ± 0.81 | < 0.05 | 4.41 ± 0.78 |
| Na+-A (mmol/l) | 141.29 ± 2.44 | 139.97 ± 3.57 | < 0.05 | 140.57 ± 3.17 |
| Cl−-A (mmol/l) | 115.98 ± 4.03 | 109.29 ± 4.77 | < 0.01 | 112.31 ± 5.55 |
| AG-A (mmol/l) | 9.86 ± 2.35 | 9.72 ± 2.33 | > 0.05 | 9.78 ± 2.33 |
| Cl−/HCO3−-A (mmol/l)/(mmol/l) | 7.76 ± 1.7 | 5.36 ± 0.99 | < 0.01 | 6.44 ± 1.81 |
| deltaAG/deltaHCO3− * | 1.52 ± 1.36 | −0.4 ± 5.3 | < 0.05 | 0.47 ± 4.13 |
| pH-V | 7.24 ± 0.07 | 7.31 ± 0.06 | < 0.01 | 7.28 ± 0.07 |
| pCO2-V (mmHg) | 35.25 ± 4.99 | 38.57 ± 4.6 | < 0.01 | 37.07 ± 5.04 |
| pO2-V (mmHg) | 63.50 ± 15.27 | 58.12 ± 11 | < 0.05 | 60.53 ± 13.3 |
| HCO3−-V (mmol/l) | 15.09 ± 3.01 | 19.71 ± 3.54 | < 0.01 | 17.62 ± 4.02 |
| BE-V (mmol/l) | −11.44 ± 3.58 | −6.03 ± 4.01 | < 0.01 | −8.48 ± 4.67 |
| K+-V (mmol/l) | 4.67 ± 0.71 | 4.31 ± 0.75 | < 0.05 | 4.47 ± 0.75 |
| Na+-V (mmol/l) | 141.54 ± 2.6 | 140.67 ± 3.31 | > 0.05 | 141.06 ± 3.03 |
| Cl−-V (mmol/l) | 115.85 ± 3.93 | 109.46 ± 4.7 | < 0.01 | 112.35 ± 5.4 |
| AG-V (mmol/l) | 10.81 ± 2.67 | 11.47 ± 2.3 | > 0.05 | 11.17 ± 2.49 |
| Cl−/HCO3−-V (mmol/l)/(mmol/l) | 8.05 ± 2.02 | 5.77 ± 1.26 | < 0.01 | 6.80 ± 2.0 |
| ΔHCO3− (mmol/l) | 0.89 ± 1.7 | 1.95 ± 1.79 | < 0.01 | 1.47 ± 1.82 |
| Total protein (g/dl) | 5.75 ± 0.78 | 6.12 ± 1.01 | < 0.05 | 5.96 ± 0.93 |
| Pi (mg/dl) | 5.90 ± 1.29 | 5.13 ± 1.15 | < 0.01 | 5.48 ± 1.27 |
| PTH (pg/ml) | 424.28 ± 262.27 | 294.3 ± 185.8 | < 0.01 | 350.01 ± 229.76 |
| Hemoglobin (g/dl) | 9.63 ± 1.33 | 10.33 ± 1.5 | < 0.01 | 10.02 ± 1.46 |
| Creatinine (mg/dl) | 5.58 ± 1.68 | 5.23 ± 1.95 | > 0.05 | 5.39 ± 1.83 |
| eGFR (ml/min/1.73 m2) | 10.45 ± 3.06 | 12.69 ± 4.8 | < 0.01 | 11.68 ± 4.24 |
| Urea (mg/dl) | 152.66 ± 31.62 | 141.74 ± 43.08 | > 0.05 | 146.68 ± 38.55 |