Julien Lanoiselée1,2, Paul J Zufferey1,2,3, Edouard Ollier1,4, Sophie Hodin4, Xavier Delavenne1,4,5. 1. INSERM, U1059, Dysfonction Vasculaire et Hémostase, F-42023, Saint-Etienne, France. 2. Département d'Anesthésie-Réanimation, CHU de Saint-Etienne, F-42055, Saint-Etienne, France. 3. Unité de Recherche Clinique Innovation et Pharmacologie, CHU de Saint-Etienne, F-42055, Saint Etienne, France. 4. Laboratoire de Pharmacologie Toxicologie, CHU Saint-Etienne, F-42055, Saint-Etienne, France. 5. Université de Lyon, Saint-Etienne, F-42023, France.
Abstract
AIMS: Tranexamic acid (TXA) is an antifibrinolytic agent, decreasing blood loss in hip arthroplasty. The present study investigated the relationship between TXA exposure markers, including the time above the in vitro threshold reported for inhibition of fibrinolysis (10 mg l-1 ), and perioperative blood loss. METHODS: Data were obtained from a prospective, double-blind, parallel-arm, randomized superiority study in hip arthroplasty. Patients received a preoperative intravenous bolus of TXA 1 g followed by a continuous infusion of either TXA 1 g or placebo over 8 h. A population pharmacokinetic study was conducted to quantify TXA exposure. RESULTS: In total, 827 TXA plasma concentrations were measured in 166 patients. A two-compartment model fitted the data best, total body weight determining interpatient variability in the central volume of distribution. Creatinine clearance accounted for interpatient variability in clearance. At the end of surgery, all patients had TXA concentrations above the therapeutic target of 10 mg l-1 . The model-estimated time during which the TXA concentration was above 10 mg l-1 ranged from 3.3 h to 16.3 h. No relationship was found between blood loss and either the time during which the TXA concentration exceeded 10 mg l-1 or the other exposure markers tested (maximum plasma concentration, area under the concentration-time curve). CONCLUSION: In hip arthroplasty, TXA plasma concentrations were maintained above 10 mg l-1 during surgery and for a minimum of 3 h with a preoperative TXA dose of 1 g. Keeping TXA concentrations above this threshold up to 16 h conferred no advantage with regard to blood loss.
RCT Entities:
AIMS: Tranexamic acid (TXA) is an antifibrinolytic agent, decreasing blood loss in hip arthroplasty. The present study investigated the relationship between TXA exposure markers, including the time above the in vitro threshold reported for inhibition of fibrinolysis (10 mg l-1 ), and perioperative blood loss. METHODS: Data were obtained from a prospective, double-blind, parallel-arm, randomized superiority study in hip arthroplasty. Patients received a preoperative intravenous bolus of TXA 1 g followed by a continuous infusion of either TXA 1 g or placebo over 8 h. A population pharmacokinetic study was conducted to quantify TXA exposure. RESULTS: In total, 827 TXA plasma concentrations were measured in 166 patients. A two-compartment model fitted the data best, total body weight determining interpatient variability in the central volume of distribution. Creatinine clearance accounted for interpatient variability in clearance. At the end of surgery, all patients had TXA concentrations above the therapeutic target of 10 mg l-1 . The model-estimated time during which the TXA concentration was above 10 mg l-1 ranged from 3.3 h to 16.3 h. No relationship was found between blood loss and either the time during which the TXA concentration exceeded 10 mg l-1 or the other exposure markers tested (maximum plasma concentration, area under the concentration-time curve). CONCLUSION: In hip arthroplasty, TXA plasma concentrations were maintained above 10 mg l-1 during surgery and for a minimum of 3 h with a preoperative TXA dose of 1 g. Keeping TXA concentrations above this threshold up to 16 h conferred no advantage with regard to blood loss.
Authors: Irene Lecker; Dian-Shi Wang; Paul D Whissell; Sinziana Avramescu; C David Mazer; Beverley A Orser Journal: Ann Neurol Date: 2015-12-15 Impact factor: 10.422
Authors: Mehmet Ersin; Mehmet Demirel; Mehmet İlke Büget; İpek Saadet Edipoğlu; Ata Can Atalar; Ali Erşen Journal: Acta Orthop Traumatol Turc Date: 2020-11 Impact factor: 1.511
Authors: Shuhui Li; Homa K Ahmadzia; Dong Guo; Elyes Dahmane; Adam Miszta; Naomi L C Luban; Jeffrey S Berger; Andra H James; Alisa S Wolberg; John N van den Anker; Jogarao V S Gobburu Journal: Br J Clin Pharmacol Date: 2021-03-08 Impact factor: 4.335
Authors: J Lanoiselée; R Chaux; S Hodin; S Bourayou; A Gibert; R Philippot; S Molliex; P J Zufferey; X Delavenne; E Ollier Journal: Sci Rep Date: 2021-10-05 Impact factor: 4.379