Abstract
Purpose
Tranexamic acid (TXA) has shown to reduce perioperative blood loss after bilateral total knee arthroplasty (TKA). But dosage and schedule of administration are not clear in literature. This study was aimed to compare prospectively blood loss and transfusion requirement in bilateral TKA with 3-dose regimen versus a single intra-operative dose of intravenous TXA.
Methods
This prospective non-randomised controlled trial included 25 patients undergoing bilateral simultaneous TKA who received three doses of 1 g intravenous TXA (group 1). First dose was given prior to deflation of the tourniquet, followed by two more doses 6 h apart. The control group included 25 matched patients (group 2) receiving a single dose of 1 g intravenous TXA just prior to deflation of the tourniquet.
Results
Mean drop in haemoglobin was less in group 1 as compared to group 2, but this difference was not statistically significant (2.51 vs 2.93 g/dL, p = 0.210). Similarly mean drop in haematocrit was more in group 2 as compared to group 1, though it was not statistically significant (9.34 vs. 9.18, p = 0.868). The need for blood transfusions was more in group 2 compared to group 1, but this difference was not statistically significant (p = 0.601). Higher frequency of ecchymosis around the surgical site was noted in group 2 as compared to group 1, for which prophylactic low-molecular-weight heparin had to be stopped post-operatively, but this difference was not statistically significant (p = 0.065).
Conclusion
The study has failed to show any significant beneficial effect of three doses of TXA in TKA as compared to a single dose. Though a trend towards reduction in mean haemoglobin drop and decreased need for stopping LMWH in post-operative period was seen, the results were not statistically significant.
Level of Evidence
II, prospective non-randomised controlled trial
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The institutional ethics committee approved the study. Each author certifies that he or she has no commercial associations (eg, consultancies, stock ownership, equity interest, patent/licensing arrangements, etc.) that might pose a conflict of interest in connection with the submitted article. The study was conducted in All India Institute of Medical Sciences, Rishikesh, India.
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Goyal, T., Choudhury, A.K. & Gupta, T. Are Three Doses of Intravenous Tranexamic Acid more Effective than Single Dose in Reducing Blood Loss During Bilateral Total Knee Arthroplasty?. JOIO 54, 805–810 (2020). https://doi.org/10.1007/s43465-020-00231-2
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DOI: https://doi.org/10.1007/s43465-020-00231-2