Research Article
Impact of Preoperative Anemia on Perioperative Outcomes in Patients Undergoing Elective Colorectal Surgery
Table 2
Intraoperative variables.
| | Anemia group () | Nonanemia group () | value |
| Operative time | 140 (120–180) | 138 (115–180) | 0.90 | Estimated blood loss | 100 (80–150) | 100 (50–150) | 0.41 | Perioperative RBC transfusion, n (%) | 40 (25.9%) | 3 (1.7%) | <0.01 | Units of RBC transfusion | 3 (2–6) | 4 (2–4) | <0.01 | Types of operation, n (%) | | | <0.01 | Laparoscopic surgery† | 60 (39%) | 109 (63%) | | Open surgery | 94 (61%) | 63 (37%) | | Surgical procedure, n (%) | | | <0.01 | Colon resection | 93 (60%) | 38 (22%) | | Rectum resection | 61 (40%) | 135 (78%) | | Stoma formation, n (%) | 36 (23%) | 51 (30%) | 0.20 | Maximum diameter of cancer (cm) | | | 0.02 | <4 cm | 47 (31%) | 75 (44%) | | ≥4 cm | 107 (69%) | 97 (56%) | | T stage, n (%) | | | 0.25 | T1 | 4 (3%) | 6 (4%) | | T2 | 19 (12%) | 35 (20%) | | T3 | 98 (64%) | 98 (57%) | | T4 | 33 (21%) | 33 (19%) | | Number of nodal harvest | 9 (6–12) | 7 (4–11) | <0.01 | Patients with nodal metastasis, n (%) | 52 (34%) | 70 (41%) | 0.31 | TNM stage, n (%) | | | 0.58 | I/II | 96 (62%) | 102 (59%) | | III/IV | 58 (38%) | 70 (41%) | |
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†Included laparoscopy-assisted and hand-assisted laparoscopic colorectal resection for colorectal cancer (CRC).
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