Comparison of Intravenous Tranexamic Acid versus Combined Intravenous and Local Infiltration of Tranexamic Acid in Reducing Perioperative Blood Loss in Patients Undergoing Primary Unilateral Total Hip Arthroplasty: A Randomised Clinical Study

Introduction: The use of Tranexamic Acid (TXA) in primary unilateral Total Hip Arthroplasty (THA) is well documented. However, considering the potential side effects including deep vein thrombosis and pulmonary embolism, the ideal route of administration of TXA to patients undergoing THA is still not known. Aim: To compare the efficacy of single dose intravenous (i.v.) TXA administration versus combined intravenous and local infiltration of TXA in reducing the perioperative blood loss in primary unilateral THA patients. Materials and Methods: This prospective, randomised clinical study, was conducted in the Department of Anaesthesiology and Critical Care at Nizam’s Institute of Medical Sciences, Hyderabad, Telangana, India, between October 2020 to May 2021. 60 patients were randomly allocated into two groups: the combined group C (i.v. administration of 10 mg/kg of TXA combined with local infiltration of 600 mg TXA diluted to 60 mL with normal saline) and the single i.v. group S (i.v. administration of 10 mg/kg of TXA). The perioperative blood loss was calculated in terms of three variables- intraoperative blood loss, drainage blood loss and total blood loss. The number of postoperative blood transfusions noted. Student’s t-test and Fischer’s-exact tests were applied for statistical analysis. Results: A total of 60 patients scheduled to have primary unilateral THA. Both the groups were similar in demographic features, baseline biochemical values and procedural distribution. There was a statistically significant reduction in the (mean±SD) intraoperative blood loss (697.26±221.43 mL), drain blood volume (254.66±81.36 mL) and total blood loss (952.26±263.57 mL) in the combined group C when compared to the single group S. There was no statistically significant difference (p-value=0.671) in the postoperative blood transfusion rate between the two groups. Conclusion: Intravenous combined with local infiltration of TXA significantly reduced the perioperative blood loss in patients undergoing primary unilateral THA when compared to single dose intravenous administration of TXA.