what causes you to hemorrhage after giving birth
Postpartum bleeding The most common cause is poor contraction of the uterus following childbirth.[2] Not all of the placenta being delivered, a tear of the uterus, or poor blood clotting are other possible causes.[2] It occurs more commonly in those who: already have a low amount of red blood, are Asian, with bigger or more than one baby, are obese or are older than 40 years of age.[2] It also occurs more commonly following caesarean sections, those in whom medications are used to start labor, and those who have an episiotomy.[2]
Coagulation Coagulation begins almost instantly after an injury to the blood vessel has damaged the endothelium lining the vessel. Exposure of blood to the subendothelial space initiates two processes: changes in platelets, and the exposure of subendothelial tissue factor to plasma Factor VII, which ultimately leads to fibrin formation. Platelets immediately form a plug at the site of injury; this is called primary hemostasis. Secondary hemostasis occurs simultaneously: Additional coagulation factors or clotting factors beyond Factor VII (listed below) respond in a complex cascade to form fibrin strands, which strengthen the platelet plug.[2]