Ectopic pregnancies

Ectopic pregnancy
Laparoscopic view, looking down at the uterus (marked by blue arrows). In the left Fallopian tube there is an ectopic pregnancy and bleeding (marked by red arrows). The right tube is normal.
Classification and external resources
Specialty	Obstetrics and gynecology
ICD-10	O00
ICD-9-CM	633
DiseasesDB	4089
MedlinePlus	000895
eMedicine	med/3212 emerg/478 radio/231
Patient UK	Ectopic pregnancy
MeSH	D011271
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Ectopic pregnancy, also known as eccyesis or tubal pregnancy, is a complication of pregnancy in which the embryo attaches outside the uterus. Signs and symptoms classically include abdominal pain and vaginal bleeding. Less than 50 percent of women have both of these symptoms. The pain may be described as sharp, dull, or crampy. Pain may also spread to the shoulder if bleeding into the abdomen has occurred. Severe bleeding may result in a fast heart rate, fainting, or shock. With very rare exceptions the fetus is unable to survive.

Risk factors for ectopic pregnancy include: pelvic inflammatory disease, often due to Chlamydia infection, tobacco smoking, prior tubal surgery, a history of infertility, and the use of assisted reproductive technology. Those who have previously had an ectopic pregnancy are at much higher risk of having another one. Most ectopic pregnancies (90%) occur in the Fallopian tube which are known as tubal pregnancies. Implantation can also occur on the cervix, ovaries, or within the abdomen. Detection of ectopic pregnancy is typically by blood tests for human chorionic gonadotropin (hCG) and ultrasound. This may require testing on more than one occasion. Ultrasound works best when performed from within the vagina. Other causes of similar symptoms include: miscarriage, ovarian torsion, and acute appendicitis.

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Wikipedia