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Besides placenta previa and placental abruption, uterine rupture can occur, which is a very serious condition leading to internal or external bleeding. Bleeding from the fetus is rare, but may occur with two conditions called vasa previa and velamentous umbilical cord insertion where the fetal blood vessels lie near the placental insertion site unprotected by Wharton's jelly of the cord. [11]
Early pregnancy bleeding (also called first trimester bleeding) is vaginal bleeding before 14 weeks of gestational age. [ 1 ] [ 2 ] If the bleeding is significant, hemorrhagic shock may occur. [ 1 ] Concern for shock is increased in those who have loss of consciousness , chest pain, shortness of breath , or shoulder pain.
Implantation bleeding may be confused with a regular period. [ 5 ] [ 6 ] Heavy vaginal bleeding in the first trimester or bleeding associated with pain, may be a sign of a complication , such as a miscarriage or an ectopic pregnancy , that would need to be assessed by a healthcare provider.
Bleeding and spotting are common during the luteal phase of the menstrual cycle, and early stages of pregnancy, but are unrelated to implantation. Implantation bleeding occurs between 7 and 14 days after fertilization, [ 56 ] and is a small amount of light vaginal bleeding or spotting that can occur in early pregnancy due to the blastocyst ...
Bleeding in excess of this norm in a nonpregnant woman constitutes gynecologic hemorrhage. In addition, early pregnancy bleeding has sometimes been included as gynecologic hemorrhage, namely bleeding from a miscarriage or an ectopic pregnancy, while it actually represents obstetrical bleeding. However, from a practical view, early pregnancy ...
In cases of pregnancy of unknown location and a history of heavy bleeding, it has been estimated that approximately 6% have an underlying ectopic pregnancy. [5] Between 30% and 47% of women with pregnancy of unknown location are ultimately diagnosed with an ongoing intrauterine pregnancy, whereof the majority (50–70%) will be found to have ...
Without implantation of a fertilized egg, the endometrial lining is either reabsorbed (estrous cycle) or shed (menstrual cycle). In the latter case, the process of shedding involves the breaking down of the lining, the tearing of small connective blood vessels, and the loss of the tissue and blood that had constituted it through the vagina .
Abnormal uterine bleeding (AUB), also known as atypical vaginal bleeding (AVB), is vaginal bleeding from the uterus that is abnormally frequent, lasts excessively long, is heavier than normal, or is irregular. [1] [3] The term dysfunctional uterine bleeding was used when no underlying cause was present. [3] Vaginal bleeding during pregnancy is ...