Table 4. Metabolic and nutritional parameters according the surgical models at baseline and 1 and 3 months.
| GBP (n = 14) | AGB (n = 8) | |||||
|---|---|---|---|---|---|---|
| Baseline | 1 month | 3 months | Baseline | 1 month | 3 months | |
| Hemoglobin (g/dl) | 13.1 (12.8–13.5) | 13.3 (12.5–13.5) | 13.3 (12.7–13.8) | 13.2 (12.4–14.2) | 12.4 (12.2–13.5) | 12.8 (12.1–13.6) |
| <12 g/dl N(%) | 3 (21) | 1 (7) | 2 (14) | 2 (14) | 1 (13) | 1 (13) |
| Ferritin (μg/l) | 59 (26–95)a | 88.5 (50–141)b | 77 (54–155)b | 87 (18–126) | 59 (45–99) | 59 (34–110) |
| <30 μg/l N(%) | 4 (28) | 1 (7) | 1 (7) | 2 (25) | 1 (13) | 1 (13) |
| Iron (μmol/l) | 12.0 (11.0–16.0) | 11.0 (9.0–13.0) | 14.5 (11.0–16.0) | 15.0 (11.0–16.0) | 12.0 (11.0–15.0) | 12.5 (8.0–16.0) |
| <9 μmol/l N (%) | 2 (14) | 3 (21) | 1 (7) | 0 (0) | 1 (13) | 3 (38) |
| Albumin (g/l) | 35.5 (34.0–38.5)a | 37.5 (35.0–40.0)b | 36.0 (35.0–38.0)a | 36.0 (34.0–39.0) | 37.0 (36.0–40.0) | 38.5 (34.5–40.0) |
| <37 g/l N(%) | 8 (57) | 6 (42) | 8 (57) | 4 (50) | 2 (25) | 3 (38) |
| Prealbumin (g/l) | 0.27 (0.24–0.30)c | 0.24 (0.20–0.25)b | 0.19 (0.17–0.23)a | 0.22 (0.21–0.24)b | 0.18 (0.17–0.24)a | 0.19 (0.16–0.23)a |
| <0.2 g/L N(%) | 0 (0)a | 3 (21)b | 8 (57)c | 1 (13)a | 4 (50)b | 5 (63)b |
| Calcium (mmol/l) | 2.27 (2.22–2.34) | 2.34 (2.30–2.37) | 2.27 (2.25–2.33) | 2.24 (2.18–2.34) | 2.32 (2.24–2.37) | 2.37 (2.26–2.40) |
| 25(OH) vitamin D3 (ng/ml) | 19.0 (13.0–24.0) | 10.0 (6.0–18.0)* | ||||
| <30 ng/ml N(%) | 10 (71) | 7 (88) | ||||
| Parathyroid hormone (pg/ml) | 41.1 (33.3–54.0) | 54.6 (43.5–77.5) | ||||
| >45 pg/ml N(%) | 5 (35) | 5 (63) | ||||
| Thiamine (nmol/l) | 158 (132–182) | 132 (113–168) | ||||
| <126 nmol/l N(%) | 2 (14) | 3 (38) | ||||
| Erythrocyte folate (nmol/l) | 1342 (923–1650) | 929 (864–1025)* | ||||
| Serum folate (nmol/l) | 14.7 (12.0–23.6) | 12.7 (11.0–15.2) | ||||
| <7 nmol/l N(%) | 3 (21) | 5 (63) | ||||
| Vitamin B-12 (pmol/l) | 294 (222–392) | 289 (208–618) | ||||
| <140 pmol/l N(%) | 1 (7) | 0 (0) | ||||
a,b,c Median or percentage values within a row with unlike superscript letters were significantly different between time points for each surgical model, as tested by paired pairwise post hoc comparisons with Holm-Bonferroni correction or paired McNemar’s test
*Significant differences between GBP and AGB. Normal ranges are as follows: hemoglobin 12–17 g/dl; ferritin 30–300 μg/l; iron 9–27 μmol/l; albumin 37–50 g/l; prealbumin 0.2–0.35 g/l; calcium 2.1–2.65 mmol/l; 25(OH)-vitamin-D3 30–100 ng/ml; thiamine 126–250 nmol/l; serum folate 7–39.5 nmol/l, vitamin B12 140–490 pmol/l.