Knee Osteoarthritis Clinical Trial
Official title:
Serial Use of Intravenous and Oral Tranexamic Acid in Primary Total Knee Arthroplasty Patients: A Randomized Controlled Study
The usefulness of tranexamic acid(TXA) to reduce blood loss and transfusion in total knee replacement arthroplasty(TKRA) has been demonstrated. However, the optimal does, duration of treatment and route of administration of TXA to reduce blood loss while minimizing adverse effects remain uncertain. Recently, the serial use of perioperative IV and post-operative oral TXA has been shown to significantly reduce transfusion rate without increasing thromboembolic complications compared to placebo. The aim of this study is to 1) determine the beneficial effect and safety of the serial treatment of IV and oral TXA over IV use alone and 2) assess the sufficient length of postoperative use of oral TXA in TKRA patients.
It has been demonstrated that tranexamic acid (TXA) reduces the peri-operative blood loss as
well as the need for transfusion in total knee replacement arthroplasty(TKRA). The
anti-fibrinolytic effects of TXA have been shown to mainly present in the wound that, in
previous studies, the use of TXA decreased the blood loss without increasing the risk of
thromboembolic complications. Nevertheless, the optimal dose, duration of treatment and route
of administration of TXA to reduce blood loss while minimizing adverse effects remain
uncertain.
To use TXA as a pharmacologic alternative to transfusion, optimal regimen should be
elucidated. Various studies have reported the effect of perioperative use of intravenous or
topical TXA. Meta-analyses concluded that combined use of intravenous and topical TXA is more
effective in reducing the blood loss and transfusion rate without increasing the risk of deep
vein thrombosis or pulmonary embolism compared to the use of either intravenous TXA or
topical TXA alone. Both intravenous and topical administration was conducted pre or
intraoperatively or within 6 hours post-operatively mainly due to conceivable risk of
thromboembolic event when TXA is used continuously after surgery. However, regarding the fact
that systemic activation of fibrinolysis starts post-operatively in TKRA using tourniquets
and lasts over 18 hours, the continuous use of TXA after surgery might have additional
benefit over the single day use. Moreover, the serial use of post-operative oral TXA for 5
days after perioperative IV TXA use has been shown to significantly reduce transfusion rate
without increasing thromboembolic complications compared to placebo.
Therefore, in this study, the investigators aimed to 1) investigate the effect of serial use
of perioperative IV and post-operative oral TXA in reducing the blood loss and transfusion
risk compared to single day perioperative use of IV TXA and 2) assess the sufficient length
of postoperative use of oral TXA in TKRA patients.
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