Ulcerative Colitis Patient for Proctocolectomy

You have been asked to assess a 26-year-old woman with ulcerative colitis for an inpatient semi-urgent laparoscopic-assisted total proctocolectomy with ileoanal anastomosis. Medications: - mesalazine 2g orally bd - prednisolone 40mg orally daily - infliximab 300mg intravenously fortnightly Investigations: - sodium 135 mmol/L (135-145), potassium 4.0 mmol/L (3.5-5.2), creatinine 75 micromol/L (<105) - haemoglobin 105 g/L (115-155), MCV 71 fL (80-100), MCH 23 pg (27.5-33.2) - white cell count 6.4 x10^3/microL (3.5-9.8), platelets 400 x10^3/microL (150-450) - iron 8 micromol/L (5.0-30), transferrin 3.2 g/L (2.0-3.2), transferrin saturation 12% (10-45%), ferritin 40 ng/mL (20-250) - CRP 150 mg/L (<5), albumin 30 g/L (38-52)