Table 3.
Biochemical parameters in the first 7 days of life
| Pre-consensus PN Group (n = 68) | Post-consensus PN Group (n = 85) | P Value | |
|---|---|---|---|
| Day 1 | |||
| pH | 7.30 (0.3) | 7.30 (0.1) | 0.112 |
| PCO2 | 43 (18.8) | 48 (15) | 0.244 |
| HCO3 | 22.65 (4.8) | 23.7 (4) | 0.073 |
| Base excess | −2.3 (4.3) | −1.55 (4.3) | 0.091 |
| Sodium | 138 (4) | 139 (3) | 0.136 |
| Chloride | 108.5 (5) | 107 (6) | 0.269 |
| Urea | 4.15 (2.3) | 5.60 (2.4) | 0.012 |
| Creatinine | 66.5 (24) | 68 (19) | 0.940 |
| Day 3 | |||
| pH | 7.23 (0.3) | 7.31 (0.1) | 0.09 |
| PCO2 | 40 (11.8) | 42 (12) | 0.998 |
| HCO3 | 19.8 (3.4) | 20.65 (4.1) | 0.564 |
| Base excess | −4.8 (4.4) | −4.65 (5.2) | 0.684 |
| Sodium | 141.5 (4) | 144 (6) | 0.000 |
| Chloride | 112 (5) | 111 (6) | 0.144 |
| Urea | 6.15 (3.5) | 8.20 (5.0) | 0.000 |
| Creatinine | 78.5 (27) | 67 (26) | 0.006 |
| Day 7 | |||
| pH | 7.29 (0.12) | 7.37 (0.07) | 0.000 |
| PCO2 | 45.65 (11) | 46.5 (9.8) | 0.483 |
| HCO3 | 22.5 (3.48) | 26.15 (4.65) | 0.000 |
| Base excess | −2.6 (3.73) | 1.75 (4.13) | 0.000 |
| Sodium | 136 (4) | 139 (5) | 0.001 |
| Chloride | 106.5 (6) | 103 (4) | 0.000 |
| Urea | 4.4 (3.3) | 7.7 (3.9) | 0.000 |
| Creatinine | 61 (33) | 57 (20) | 0.378 |
All values are mmol/L except pH.