Role of Sublingual Misoprostol With or Without Intravenous Tranexamic Acid for Reducing Post-partum Hemorrhage During and After Hemorrhagic Cesarean Section: A Double-Blind Randomized Clinical Trial

Different uterotonic agents administration, mainly oxytocin, has been routinely used to reduce the frequency of cesarean section (CS) -related hemorrhage; however, some studies reported that oxytocin use in the setting of CS may result in maternal adverse effects, including hypotension and tachycardia., Therefore, investigating other therapeutic agents with lower adverse effects and higher efficacy is needed. Recently, a number of studies reported a correlation between fibrinogen decrease and cesarean-related hemorrhage. Furthermore, extensive tissue injury increases fibrinolysis by shifting the hemostatic equilibrium and contributing to bleeding. Therefore, anti-fibrinolytic agents, such as tranexamic acid (TA), reduce the risk of death in bleeding trauma patients. On the other hand, it has been suggested that TA administration reduces blood loss and the incidence of postpartum hemorrhage (PPH) in females after vaginal or elective CS verse effects and higher efficacy is needed. Moreover, misoprostol is a prostaglandin E1 analog which has been introduced as a uterotonic agent for preventing PPH following CS. A recent study reported that oral or sublingual misoprostol is more effective than the placebo in reducing severe PPH, following CS