Tranexamic Acid Pharmacokinetics in Postpartum Hemorrhage
“Tranexamic Acid Pharmacokinetics During Postpartum Hemorrhage”
Postpartum hemorrhage (PPH) accounts for 20-25 percent of maternal deaths worldwide. Tranexamic Acid (TXA) is an antifibrinolytic agent that has been shown to reduce the estimated blood loss after delivery and is recommended by the World Health Organization for PPH treatment. However, dosing in studies ranges from 0.5g to 4g and the optimal dose of TXA in the pregnant population has not been established. Further, the effect of TXA on global coagulation assessed by rotational thromboelastometry (ROTEMAR) has not been elucidated. The primary aim of this study is to evaluate the pharmacokinetics (PK) and pharmacodynamics (PD) of TXA administered after delivery in patients at risk for PPH.
Diagnostic Test - blood test
8 blood samples will be drawn: 1 at time of admission, then 15 min, 30min, 1h, 1.5h, 2h, 2.5h, and 3h post-treatment with TXA. Blood samples will be processed for ROTEMÂ® analysis and for plasma concentration of TXA. TXA plasma concentrations will be modeled with a non-linear mixed-effects strategy using Monolix 4.1 and NONMEM(Â®) 7.2.
Tranexamic Acid Administered After Delivery: Maternal Pharmacokinetics, Pharmacodynamics, and Coagulation Status