Table 2.
Preoperative and postoperative mean values of nutritional parameters
| Parameter | Normal values (unit) | Preop | Postopa | Difference M ± SD |
P |
|---|---|---|---|---|---|
| M ± SD | M ± SD | ||||
| Hemoglobin | |||||
| Male | 13.8–16 (mg/dL) | 14.10 ± 1.25 | 14.43 ± 2.01 | 0.28 ± 1.9 | 0.40 |
| Female | 12.1–16 (mg/dL) | 12.52 ± 1.15 | 12.29 ± 1.34 | 0.22 ± 1.1 | 0.17 |
| Hematocrit | |||||
| Male | 34.8–43.9 (%) | 43.3 ± 2.93 | 44.79 ± 2.42 | 1.3 ± 2.8 | 0.01 |
| Female | 34–40.7 (%) | 38.73 ± 2.89 | 38.01 ± 3.68 | − 0.74 ± 3.74 | 0.21 |
| MCV | 83–101 (f/L) | 81.16 ± 6.03 | 83.45 ± 6.68 | 2.29 ± 4.12 | < 0.0001 |
| Iron | 5.4–28.6 (μmol/L) | 10.31 ± 4.87 | 15.11 ± 7.87 | 4.80 ± 4.89 | < 0.0001 |
| Ferritin | 11–304 (mcg/L) | 29.50 ± 25.19 | 34.72 ± 37.79 | 5.22 ± 25.62 | 0.64 |
| Total protein | 64–83 (g/L) | 73 ± 4.16 | 69.88 ± 4.63 | − 3.13 ± 5.36 | < 0.0001 |
| Albumin | 40–150 (mg/L) | 41.14 ± 4.06 | 40.38 ± 4.67 | − 0.77 ± 4.16 | 0.13 |
| Calcium | 2.1–2.5 (mmol/L) | 2.28 ± 0.12 | 2.55 ± 1.79 | 0.28 ± 1.81 | 0.32 |
| Magnesium | 0.72–1.04 (mmol/L) | 0.81 ± 0.04 | 0.81 ± 0.04 | 0.00 ± 0.06 | 0.91 |
| Phosphate | 0.89–1.66 (mmol/L) | 1.55 ± 0.22 | 1.50 ± 0.19 | − 0.05 ± 0.15 | 0.40 |
| Zinc | 10.1–16.8 (μmol/L) | 12.75 ± 1.25 | 11.98 ± 1.22 | − 0.77 ± 1.84 | 0.28 |
| Copper | 11–22 (μmol/L) | 21.32 ± 2.26 | 16.87 ± 3.45 | − 4.45 ± 3.91 | 0.04 |
| Vitamin D | 30–50 (ng/mL) | 11.73 ± 6.06 | 17.73 ± 9.33 | 6.00 ± 11.11 | < 0.0001 |
| Vitamin B12 | 133–675 (pmol/L) | 256.51 ± 106.71 | 271.22 ± 227.64 | − 14.71 ± 229.17 | 0.036 |
| Folic acid | 4–45 (nmol/L) | 20.41 ± 11.30 | 14.40 ± 10.74 | − 6.01 ± 12.42 | 0.07 |
M mean, SD standard deviation, Difference postoperative value minus preoperative value, MCV mean cell volume
aMean follow-up = 24.2 ± 12.28 months