Search results
Results from the WOW.Com Content Network
Implantation (embryology) Implantation, also known as nidation, [1] is the stage in the mammalian embryonic development in which the blastocyst hatches, attaches, adheres, and invades into the endometrium of the female's uterus. [2] Implantation is the first stage of gestation, and, when successful, the female is considered to be pregnant. [3]
Frequency. ~30% of pregnancies [1] 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.
[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]
83,000 (2015) [3] 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.
Human embryonic development or human embryogenesis is the development and formation of the human embryo. It is characterised by the processes of cell division and cellular differentiation of the embryo that occurs during the early stages of development. In biological terms, the development of the human body entails growth from a one-celled ...
Ovulation marks the end of the follicular phase of the ovarian cycle, and the start of the luteal phase. Ovulation is the release of egg cells from the ovaries as part of the ovarian cycle for most vertebrates. In women, this event occurs at the end of the follicular phase, when the ovarian follicles rupture and release the secondary oocyte ...
Antepartum haemorrhage (APH), prepartum haemorrhage. Specialty. Obstetrics. Antepartum bleeding, also known as antepartum haemorrhage (APH) or prepartum hemorrhage, is genital bleeding during pregnancy after the 28th week of pregnancy up to delivery. [1][2] It can be associated with reduced fetal birth weight. [3]
Hemorrhoids – Hemorrhoids are enlarged veins near or inside the rectum. Hemorrhoids are common in pregnancy as a result of constipation and increased intra-abdominal pressure. Hemorrhoids can cause bleeding, pain, and itching. [30] Treatment is symptomatic, including improving underlying constipation.