Characteristic | Pre-infusion iron status | p | |||
---|---|---|---|---|---|
IDA (CRP ≤ 5 + Fer < 30) n (%) | FID (CRP > 5 + Fer < 30) n (%) | AOI (CRP > 5 + Fer ≥ 30) n (%) | Replete/other (CRP ≤ 5 + Fer ≥ 30) n (%) | ||
Total | 18 (38) | 17 (38) | 6 (12) | 6 (12) | – |
Patient characteristics | |||||
Sex | |||||
Male | 13 (72) | 10 (59) | 1 (17) | 3 (50) | 0.120 |
Female | 5 (28) | 7 (41) | 5 (83) | 3 (50) | |
Age (years) | |||||
< 65 | 1 (6) | 5 (29) | 1 (17) | 1 (17) | 0.261 |
65–75 | 6 (33) | 2 (12) | 3 (50) | 3 (50) | |
> 75 | 11 (61) | 10 (59) | 2 (33) | 2 (33) | |
ASA | |||||
1 | 0 (0) | 2 (12) | 0 (0) | 0 (0) | 0.070 |
2 | 9 (50) | 3 (17) | 6 (100) | 4 (67) | |
3 | 8 (44) | 11 (65) | 0 (0) | 2 (33) | |
4 | 1 (6) | 1 (6) | 0 (0) | 0 (0) | |
Pathologic characteristics | |||||
TNM stage | |||||
1 | 1 (6) | 3 (18) | 0 (0) | 2 (33) | 0.448 |
2 | 11 (61) | 5 (29) | 3 (50) | 3 (50) | |
3 | 6 (33) | 8 (47) | 3 (50) | 1 (17) | |
4 | 0 (0) | 1 (6) | 0 (0) | 0 (0) | |
Tumour site | |||||
Right colon | 8 (44) | 17 (100) | 5 (83) | 5 (83) | 0.006 |
Left colon | 3 (17) | 0 (0) | 1 (17) | 1 (17) | |
Rectum | 7 (39) | 0 (0) | 0 (0) | 0 (0) | |
Infusion variables | |||||
Total IV iron dose (mg) | |||||
1000 | 7 (44) | 6 (40) | 0 (0) | 3 (50) | 0.254 |
1500 | 4 (25) | 7 (47) | 4 (67) | 3 (50) | |
2000 | 5 (31) | 2 (13) | 2 (33) | 0 (0) | |
Days from infusion to surgery | |||||
Median (range) | 20 (3–83) | 30 (7–62) | 25 (19–44) | 16 (2–48) | 0.233 |
Haematological variables | |||||
Pre-iron Hb (mg/L) | |||||
Median (range) | 100 (77–118) | 102 (65–122) | 110 (75–117) | 110 (103–115) | 0.101 |
Δ Hb (mg/L) | |||||
Median (range) | 24 (− 6 to 48) | 15 (− 15 to 63) | 3 (− 11 to 34) | − 5 (− 10 to 8) | 0.017 |
POD1 Hb (mg/L) | |||||
Median (range) | 108 (87–133) | 103 (87–138) | 102 (74–113) | 95 (85–99) | 0.028 |