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Implantation bleeding. "Implantation bleeding is thought to be light bleeding that occurs about 10 days after ovulation," says Washington, D.C.-based ob-gyn Dr. Cordelia Nwankwo .
It is the most common cause of early pregnancy bleeding and is associated only with heavy (versus light) bleeding. [8] However, patients typically remain hemodynamically stable. Threatened early pregnancy loss, often considered a type of early pregnancy loss, refers vaginal bleeding in the presence of an intrauterine pregnancy and a closed cervix.
Implantation bleeding may be confused with a regular period. [4] [5] 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. [6]
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, [57] and is a small amount of light vaginal bleeding or spotting that can occur in early pregnancy due to the blastocyst ...
[5] [13] Pregnancy is "the presence of an implanted human embryo or fetus in the uterus"; implantation occurs on average 8–9 days after fertilization. [15] An embryo is the term for the developing offspring during the first seven weeks following implantation (i.e. ten weeks' gestational age), after which the term fetus is used until birth. [5]
Obstetrical bleeding is bleeding in pregnancy that occurs before, during, or after childbirth. [4] Bleeding before childbirth is that which occurs after 24 weeks of pregnancy. [4] Bleeding may be vaginal or less commonly into the abdominal cavity. Bleeding which occurs before 24 weeks is known as early pregnancy bleeding.
Implantation may refer to: Implantation (embryology), in which an embryo adheres to the wall of the uterus; Implant (medicine), insertion of implants; Endometrial transplantation, as part of the theory of retrograde menstruation in endometriosis; Ion implantation, insertion of ions, in semiconductor device fabrication; Implantation bleeding
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 ...