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]
Umbilical artery The umbilical arteries supply deoxygenated blood from the fetus to the placenta. There are usually two umbilical arteries present together with one umbilical vein in the umbilical cord. The umbilical arteries surround the urinary bladder and then carry all the deoxygenated blood out of the fetus through the umbilical cord. Inside the placenta, the umbilical arteries connect with each other at a distance of approximately 5Â mm from the cord insertion in what is called the Hyrtl anastomosis.[1] Subsequently, they branch into chorionic arteries or intraplacental fetal arteries.[2]