• Amanda Lopez-Picado, Borja Barrachina, Maria Remón, and Maria Errea.
• Araba Research Unit, Araba University Hospital, Bioaraba, Spain; Clinical Research and Clinical Trials Unit, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain. Electronic address: amanda.lopezpicado@gmail.com.
• J Clin Anesth. 2019 Nov 1; 57: 124-128.

Study ObjectiveTo establish the best dose regimen for tranexamic acid (TXA) in total hip replacement surgery.DesignSecondary analysis based on data from a multicenter double-blind randomized clinical trial.SettingTwo hospitals in Spain.InterventionsTXA (2 doses) versus placebo.PatientsConsecutive adults who underwent uncemented unilateral total replacement hip surgery.MeasurementsWe estimated the costs associated with TXA use (including consumables, drugs and nurse time) and allogeneic and autologous blood transfusions. For the cost-benefit analysis, we considered the spending on controls to estimate the benefits and the spending on patients in the intervention arms to estimate the costs. The net cost-benefit of TXA administration was calculated by subtracting the costs incurred per patient given TXA from the costs per patient given placebo.Main ResultsThe median total costs per patient were €2.7 (2.4-3.0) in the single-dose group, €6.5 (6.5-7.1) in the two-dose group and €0 (0-190) in the control group (p = 0.001). The blood transfusion costs were €1607.8, €1041.8 and €3115.3 in the single-dose, two-dose and control groups, respectively. The administration of two doses of TXA achieved a greater net cost-benefit than a single dose, the difference being €566 in terms of overall costs.ConclusionsThe administration of TXA is cost-effective, especially in the case of the two-dose regimen studied.Copyright © 2019 Elsevier Inc. All rights reserved.

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