Indications
It is distributed relatively evenly in the tissues (with the exception of cerebrospinal fluid, where the concentration is 1/10 of the plasma one). Penetrates through the placental barrier (the concentration in the umbilical cord blood after use to a woman at a dose of 10 mg / kg can be quite high, about 30 mcg/ml of fetal serum) and the blood-brain barrier (BBB). it is excreted in breast milk (reaching approximately 1% of the maternal plasma concentration). It is found in seminal fluid, where it reduces fibrinolytic activity, but does not affect sperm migration. Transxamic acid quickly diffuses into the joint fluid and through the synovial membranes, and is found in the joint fluid at the same concentration as in the blood serum. The biological half-life from the joint fluid is about 3 hours. The initial volume of distribution of Vd is 9-12 liters. Binding to plasma proteins (profibrinolysin) is less than 3%.
In the blood, about 3% is associated with protein (plasminogen). Total renal clearance is equal to plasma clearance.
Antifibrinolytic concentration in various tissues is maintained for 17 h. in plasma – up to 7-8 h.
It is only slightly metabolized. The area of the iodine concentration/time curve AUC has a three-phase form with T 1/2 in the terminal phase – 2 h. Total renal clearance is equal to plasma (7 l / h). It is excreted by the kidneys (the main route is glomerular filtration), more than 95% unchanged during the first 12 hours. After intravenous use at a dose of 10 mg/kg for 24 hours, about 90% of tranexamic acid is eliminated by glomerular filtration. Two metabolites of tranexamic acid were identified: N-acetylated and deaminated derivatives. With impaired renal function, there is a risk of accumulation of tranexamic acid.
Reviews
There are no reviews yet