Table 2.
Records of blood tests and weight measurements
| Variable | 2–3 years post-surgery | 3–4 years post-surgery | 4–5 years post-surgery | ||||||
|---|---|---|---|---|---|---|---|---|---|
| LAGB (n= 1400) n (%) | Gastric bypass (n= 1067) n (%) | Sleeve gastrectomy (n= 446) n (%) | LAGB (n= 1213) n (%) | Gastric bypass (n= 818) n (%) | Sleeve gastrectomy (n= 300) n (%) | LAGB (n= 1020) n (%) | Gastric bypass (n= 565) n (%) | Sleeve gastrectomy (n= 202) n (%) | |
| Weight | 763 (54.5) | 632 (59.2) | 228 (51.1) | 635 (52.4) | 425 (52.0) | 135 (45.0) | 533 (52.3) | 283 (50.1) | 94 (46.5) |
| Blood tests recommended by BOMSS for all patients | |||||||||
| Creatinine | 667 (47.6) | 667 (62.5) | 247 (55.4) | 587 (48.4) | 525 (64.2) | 183 (61.0) | 544 (53.3) | 337 (59.7) | 118 (58.4) |
| Albumin | 607 (43.4) | 624 (58.5) | 216 (48.4) | 519 (42.8) | 490 (59.9) | 160 (53.3) | 486 (47.7) | 314 (55.6) | 98 (48.5) |
| Parathyroidhormone | 6 (0.4) | 51 (4.8) | 7 (1.6) | 6 (0.5) | 29 (3.6) | 6 (2.0) | 5 (0.5) | 13 (2.3) | 8 (4.0) |
| Folate | 215 (15.4) | 383 (35.9) | 100 (22.4) | 175 (14.4) | 270 (33.0) | 68 (22.7) | 171 (16.8) | 184 (32.6) | 55 (27.2) |
| Calcium | 291 (20.8) | 369 (34.6) | 102 (22.9) | 236 (19.5) | 264 (32.3) | 82 (27.3) | 223 (21.9) | 189 (33.5) | 55 (27.2) |
| Haemoglobin | 629 (44.9) | 653 (61.2) | 223 (50.0) | 554 (45.7) | 498 (60.9) | 164 (54.7) | 507 (49.7) | 326 (57.7) | 111 (55.0) |
| Ferritin/iron | 222 (15.9) | 413 (38.7) | 116 (26.0) | 193 (15.9) | 267 (32.6) | 82 (27.3) | 197 (19.3) | 185 (32.7) | 70 (34.7) |
| Protein | 416 (29.7) | 373 (35.0) | 126 (28.3) | 341 (28.1) | 276 (33.7) | 96 (32.0) | 514 (50.4) | 335 (59.3) | 114 (56.4) |
| Vitamin B12 | 242 (17.3) | 565 (53.0) | 169 (37.9) | 199 (16.4) | 426 (52.1) | 111 (37.0) | 194 (19.0) | 283 (50.1) | 79 (39.1) |
| Vitamin D | 65 (4.6) | 180 (16.9) | 57 (12.8) | 56 (4.6) | 110 (13.5) | 31 (10.3) | 59 (5.8) | 78 (13.8) | 24 (11.9) |
| Copper | 1 (0.07) | 16 (1.5) | 4 (0.9) | 6 (0.5) | 10 (1.2) | 2 (0.7) | 1 (0.1) | 7 (1.2) | 3 (1.5) |
| Zinc | 14 (1.0) | 54 (5.1) | 11 (2.5) | 17 (1.4) | 43 (5.3) | 9 (3.0) | 8 (0.8) | 24 (4.3) | 5 (2.5) |
| Blood tests recommended by BOMSS depending on symptoms and diagnoses | |||||||||
| Vitamin E | 0 (0.0) | 1 (0.1) | 0 (0.0) | 2 (0.2) | 2 (0.2) | 1 (0.3) | 0 (0.0) | 1 (0.2) | 1 (0.5) |
| Vitamin K | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) |
| Vitamin A | 2 (0.1) | 3 (0.3) | 2 (0.5) | 3 (0.3) | 5 (0.6) | 2 (0.7) | 0 (0.0) | 5 (0.9) | 4 (2.0) |
| Magnesium | 26 (1.9) | 53 (5.0) | 12 (2.7) | 21 (1.7) | 38 (4.7) | 11 (3.7) | 18 (1.8) | 33 (5.8) | 4 (2.0) |
| Selenium | 3 (0.2) | 5 (0.5) | 2 (0.5) | 3 (0.3) | 11 (1.3) | 3 (1.0) | 3 (0.3) | 7 (1.2) | 3 (1.5) |
| Thiamine | 0 (0.0) | 1 (0.1) | 2 (0.5) | 0 (0.0) | 1 (0.1) | 2 (0.7) | 0 (0.0) | 0 (0.0) | 1 (0.5) |
BOMSS = British Obesity and Metabolic Surgery Society. LAGB = laparoscopic adjustable gastric banding.