NDLI: An observational study of an adjusted patient blood management protocol intended to lower rates of transfusion following total knee arthroplasty in patients with preoperative anemia

Content Provider	Springer Nature : BioMed Central
Author	Hourlier, Hervé Fennema, Peter
Abstract	Background Patients with preoperative anemia have a higher risk of requiring blood transfusion after major orthopedic surgery due to increased blood loss and closer transfusion thresholds. Various patient blood management (PBM) policies aim to reduce transfusion rates. This observational study aimed to investigate blood loss and evaluate the effectiveness of an adjusted surgical PBM protocol in patients with anemic chronic disease (ACD) undergoing elective total knee arthroplasty (TKA). Methods A consecutive cohort of patients underwent elective unilateral TKA with an adjusted PBM protocol. The protocol consisted of epoetin (EPO) alfa therapy prescribed by the surgeon, routine administration of tranexamic acid (TXA), and standardized postoperative pharmacologic prophylaxis for thromboembolism. The performance of this PBM protocol was analyzed in patients with a baseline hemoglobin level of less than 12 g/dl. Hemoglobin levels were controlled at admission, on postoperative day (POD) 1, and on POD 7 ± 1. A bleeding index (BI-7) was used as an estimate of blood loss up until POD 7. Multiple linear regression was used to assess whether there were any differences in BI-7 between ACD– and ACD + patients. Results A total of 751 patients with complete hemoglobin monitoring were included in the study. Of these patients, 68 (9.1%) had a baseline hemoglobin concentration of less than 12 g/dl (ACD group). In this group, 28 patients (41.2%) received preoperative EPO therapy. The mean adjusted BI-7 for the study population was 3.0 (95% CI, 2.9 to 3.0) g/dl in the ACD– group and 2.3 (95% CI, 2.0–2.6) g/dl in the ACD + group. The difference in BI-7 was statistically significant (difference, 0.6 [95% CI: 0.3 to 0.9] g/dl, p < 0.001). No major complications occurred in the ACD + group, whereas there were three complications in the ACD– group (p = 1.00). Conclusions ACD patients undergoing TKA did not have an increased risk of bleeding or bleeding complications with the use of the adjusted PBM protocol. None of ACD patients required transfusion. ACD patients undergoing TKA experienced significantly less blood loss than patients with no preoperative anemia with the use of the adjusted PBM. We now consider the use of EPO in ACD patients with no nutritional deficiencies undergoing TKA at a baseline hemoglobin level of 11 g/dl. However, this should be validated in larger cohorts with a higher prevalence of ACD patients.
Related Links	https://josr-online.biomedcentral.com/counter/pdf/10.1186/s13018-023-04404-1.pdf
Ending Page	8
Page Count	8
Starting Page	1
File Format	HTM / HTML
DOI	10.1186/s13018-023-04404-1
Journal	Journal of Orthopaedic Surgery and Research
Issue Number	1
Volume Number	18
Language	English
Publisher	BioMed Central
Publisher Date	2023-12-02
Access Restriction	Open
Subject Keyword	Orthopedics Surgical Orthopedics Patient blood management Tranexamic acid Total knee arthroplasty Blood transfusion Anemia Epoetin alfa
Content Type	Text
Resource Type	Article
Subject	Surgery Orthopedics and Sports Medicine
Journal Impact Factor	2.8/2023
5-Year Journal Impact Factor	3/2023

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