RESUMO
Background: Perioperative blood loss and the need for blood transfusion following total knee arthroplasty (TKA) has been a source of concern for many arthroplasty surgeons and patients over the years. Tranexamic acid (TXA) is increasingly being used by surgeons in limiting perioperative blood loss and the subsequent need for transfusion during TKA. Aim: This study aims to determine the efficacy of TXA in preventing perioperative blood loss, transfusion needs of patients that underwent TKA, complications, and its financial implications of its use in our institution. Patients and Methods: The study was a clinical comparative audit of perioperative blood loss and transfusion needs in primary TKA patients. The study population was divided into two groups of equal numbers (n = 40). Group A, who did not receive perioperative TXA, had TKA prior to the adoption of TXA in our institution, whereas group B, who received TXA, had TKA after TXA was adopted. Results: The mean postoperative hemoglobin was 9.49 g/dl for group A and 10.15 g/dl for group B (P = 0.021). The mean postoperative blood drainage was 888.25 ml for group A and 821.67 ml for group B (P = 0.397). The number of patients transfused in group A was 17 (42.5%) against 7 (17.5%) in group B. The mean postoperative transfusion volume was 270 ml and 101.25 ml for group A and B, respectively (P = 0.014). The mean total transfusion volume was 450 ml and 277 ml in group A and B, respectively (P = 0.063). Conclusions: The use of TXA in TKA was shown to be beneficial in our study as it resulted in a statistically significant reduction in the postoperative transfusion volumes and higher postoperative hemoglobin levels.
