Contraceptive, injectable progestin: Injectable progestin (Depo-Provera) was approved by the U.S. Food and Drug Administration (FDA) for contraception in 1992. It is injected by a health professional into the woman’s buttocks or arm muscle every three months.
Depo-Provera prevents pregnancy in three ways: It inhibits ovulation, changes the cervical mucus to help prevent sperm from reaching the egg, and changes the uterine lining to prevent the fertilized egg from implanting in the uterus.
The progestin injection is extremely effective in preventing pregnancy. It also can decrease menstrual bleeding and cramps as well as lower the risk for endometrial and ovarian cancer and pelvic inflammatory disease. Side effects can include irregular or missed periods, weight gain, and breast tenderness.
- Contraceptive, pill
Contraceptive, pill: Commonly called “the pill,” combined oral contraceptives are the most commonly used form of reversible birth control in the United States. This form of birth control suppresses ovulation (the monthly release of an egg from the ovaries) by the combined actions of the hormones estrogen and progestin. If a woman remembers to take […]
- Contraceptive, minipill
Contraceptive, minipill: A form of oral contraceptive taken daily, like combined oral contraceptives (the “pill”), but containing only the hormone progestin and no estrogen. The minipill works by reducing and thickening cervical mucus to prevent sperm from reaching the egg. It also keeps the uterine lining from thickening, which prevents a fertilized egg from implanting […]
- Contraction, uterine
Contraction, uterine: The tightening and shortening of the uterine muscles. During labor, contractions cause the cervix to thin and dilate, and they aid the baby in its entry into the birth canal and then its progress through the birth canal.
- Contractions, Braxton Hicks
Contractions, Braxton Hicks: Irregular contractions of the womb (the uterus) occurring towards the middle of pregnancy in the first pregnancy and, earlier and more intensely, in subsequent pregnancies. These contractions tend to occur during physical activity. The uterus tightens for 30 to 60 seconds beginning at the top of the uterus; and the contraction gradually […]
Contraindicate: To make a treatment or procedure inadvisable because of a particular condition or circumstance. For examples, certain medications are contraindicated during pregnancy because of the danger they pose to the fetus and the use of aspirin is clearly contraindicated in small children because of the danger of Reye syndrome.