• Int Orthop · Feb 2014

    Comparative Study

    Blood transfusion after primary total knee arthroplasty can be significantly minimised through a multimodal blood-loss prevention approach.

    • Sara Moráis, Miguel Ortega-Andreu, Emerito Carlos Rodríguez-Merchán, Norma G Padilla-Eguiluz, Hanna Pérez-Chrzanowska, Reyes Figueredo-Zalve, and Enrique Gómez-Barrena.
    • Department of Orthopaedic Surgery, Hospital La Paz, Madrid, Spain.
    • Int Orthop. 2014 Feb 1; 38 (2): 347-54.

    PurposeOur aim was to clarify the effective decrease in blood transfusion after primary total knee arthroplasty (TKA) from a multimodal blood-loss prevention approach (MBLPA) and the related risk factors of blood transfusion.MethodsWe retrospectively compared the rate of postoperative blood transfusion in 418 cases of primary TKA during 2010 from a single institution with two different groups of patients, allocating cases to the group with MBLPA (group 1, study group, N = 71) and controls to the group without MBLPA (group 2, standard group, N = 347). MBLPA procedure included pre-operative haemoglobin (Hb) optimisation; femoral canal obturation; limited incision and release; peri- and intra-articular use of saline with adrenalin, morpheic chloride, tobramycin, betamethasone and ropivacaine; tourniquet release after skin closure; 24 hour drain under atmospheric pressure; and two doses of tranexamic acid (TXA) i.v.. In the control group, surgeons followed the standard procedure without blood-saving techniques. Case-control comparison and blood transfusion risk factors were analysed.ResultsGroup 1 had a zero transfusion rate (0/71), whereas 27.4% of patients (95/347) in group 2 received allogenic blood transfusion. Significant transfusion risk factors were pre-operative Hb <12 g/dl), American Society of Anesthesiologists (ASA) status III and nonobese body mass index (BMI); Age and gender were not significant risk factors.ConclusionsMBLPA in primary TKA was highly effective, with a zero transfusion rate. Risk factors for transfusion were determined, and eliminating them contributed to the avoidance of allogeneic blood transfusion in our study series.

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