P3 A closed loop audit on pre-operative anaemia in major elective orthopaedic surgery

The international consensus statement on perioperative management of anaemia advises that patients with haemoglobin (Hb) <130 be treated before undergoing elective operations. The advantages include reduced risk of acute kidney injuries, infections and transfusions, and quicker recovery. Methods Data was collected prospectively from 127 consecutive patients undergoing elective arthroplasties at Hinchingbrooke hospital. Baseline compliance with the consensus statement was first assessed in May 2018, and the results presented at a clinical governance meeting. Departmental action plans included early identification of anaemia and treatment to Hb 130, delaying operations where necessary. We then reassessed compliance in May 2019. Results There was a statistically significant change in practice (p = 0.036). The proportion of patients undergoing arthroplasties despite Hb < 130 reduced from 38% to 21%. Those operated with Hb < 120 decreased from 14% to 0%. The proportion of preoperative anaemias that were appropriately investigated during preoperative assessment increased from 11% to 80% (p < 0.001). The increase in attempted treatment of preoperative anaemia prior to surgery however was not significant (7% vs 20%; p = 0.279). Discussion Implementation of departmental action plans resulted in substantial improvements to clinical practice. For those that underwent arthroplasties despite mild preoperative anaemia, it may have been felt that delays in improvement to quality of life for treatment may be unacceptable, or the causes (e.g. chronic disease) difficult to treat. Further action plans should involve even earlier identification of anaemia, involving primary care at the point of referral.