oral contraceptive

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contraceptive

 [kon″trah-sep´tiv]
1. diminishing the likelihood of or preventing conception.
2. an agent that does this; see also contraception.
oral contraceptive a compound, usually hormonal, taken orally in order to block ovulation and prevent the occurrence of pregnancy. See also contraception.

or·al con·tra·cep·tive (OC),

any orally effective preparation designed to prevent conception.

oral contraceptive

n.
Any of various pills containing estrogen and a progestin, or a progestin alone, that inhibit ovulation and are used to prevent conception. Also called birth control pill.

oral contraceptive (OC)

oral hormone medication for contraception. The two major sex hormones in females are estrogens and progestins. When synthetic forms of these hormones are taken, they inhibit the production of gonadotropin-releasing hormone by the hypothalamus; the pituitary therefore does not secrete gonadotropins to stimulate follicular maturation and ovulation. Depending on the formulation, cyclical changes in the uterus, vagina, and breasts may be similar to a normal menstrual cycle. Progestin-only oral contraceptives generally do not block ovulation. Instead they cause the cervical mucus to remain thick, which prevents the entry of sperm into the uterus and fallopian tubes. Seasonale, an extended-cycle method of contraception with menstrual periods every three months, was recently approved by the FDA. Contraindications to the oral contraceptives include pregnancy, diabetes mellitus, liver disease, hyperlipidemia, thrombotic complications, coronary artery disease, and sickle cell disease. Patients with depression and migraine headaches and those who are heavy cigarette smokers need to be followed up more often. The pregnancy rate when oral contraceptives are used correctly is less than 0.2% a year. See also contraception.

oral contraceptive

Gynecology A preparation of synthetic hormones intended to make a ♀ inconceivable by inhibiting ovulation OC formats Sequential method, combined method. See Biphasic contraceptive, Contraceptives, Monophase contraceptive, Third-generation contraceptive, Triphasic contraceptive.
Oral contraceptives, contraindications
Age–over 35
Breast CA or other estrogen-dependent malignancy
Breast-feeding and < 6 weeks after delivery
Cardiovascular defects–acute MI, ASHD, CVA/TIA
Circulatory defects–varicose veins, phlebitis
Cystic fibrosis
Diabetes and long-term OC use
Hypertension
Liver disease–hepatitis, CA, neoplasms
Migraines
Obesity–BMI > 30
Pregnancy–current, suspected, or recently ended
Sickle-cell disease
Smoking–especially > 1 pack/day

or·al con·tra·cep·tive

(OC) (ōr'ăl kon'tră-sep'tiv)
A medication taken by mouth designed to prevent conception.

oral contraceptive

A drug or combination of drugs taken by mouth for the purpose of preventing pregnancy. Most oral contraceptives must be taken by women. They contain oestrogens and/or PROGESTOGENS and act by preventing the ovaries from producing eggs (ova). They also have some effect in making the lining of the womb less suitable for implantation of the ovum and may make the mucus in the canal of the cervix less easily passable by sperms. Oral contraceptives are second after sterilization in effectiveness in avoiding pregnancy. Risk attributable to oral contraceptives is very small among non-smokers but there are certain categories, notably women with thrombophilia from genetic mutations, in which the risk is slightly increased. The increased risk of breast cancer has been greatly exaggerated. It amounts to no more than roughly 1 additional case per 20,000 women. Also known as ‘the pill’. See also CONTRACEPTION.

oral

1. pertaining to the mouth; taken through or applied in the mouth, as an oral medication.
2. denoting that aspect of the teeth which faces the oral cavity or tongue.

oral cavity
see mouth.
oral contraceptive
contraceptive agent taken by mouth.
oral dysphagia
see oropharyngeal dysphagia.
oral necrobacillosis
an infectious stomatitis of calves caused by Fusobacterium necrophorum. There are deep necrotic ulcers in the mouth, e.g. lateral to the molar teeth, foul breath, drooling saliva, fever and toxemia. See also calf diphtheria. Called also necrotic stomatitis.
oral neoplasm
is usually squamous cell carcinoma of the gum epithelium. It impedes mastication.
oral plasmacytoma
an unusual benign oral neoplasm of older dogs; appears as a red, lobulated, raised mass on the gingiva.
oral plate
separates the stomodeum from the pharyngeal cavity; subsequently breaks down to become the palatoglossal arch; called also oropharyngeal membrane.
oral restraint
the use of a mouth speculum, gag or wedge to permit examination and the carrying out of procedures in the mouth without danger of being bitten.
References in periodicals archive ?
Researchers found in their new analysis that birth control pills increase the risk of having a stroke by 1.
Also, obese girls are more likely to gain weight with hormonal injections than with birth control pills.
Newer types of birth control pills that contain the progestin drospirenone (e.
According to an FDA study, this risk is 2 to 3 times greater than other birth control pills.
Disconcerting to health officials is the concurrent drop in traditional birth control pill usage, which has fallen by nearly 10 per cent since 2002.
Also, birth control pills do not protect you from sexually transmitted infections (STIs), including HIV (human immunodeficiency virus), the virus that causes AIDS.
Twenty-six percent were currently using birth control pills, 10% had used emergency contraceptives and none were using other methods besides condoms; 23% had had an abortion.
the product's manufacturer, added the updates, including a new bolded warning stating that women who use the patch are exposed to an average steady state concentration of ethinyl estradiol that is about 60% higher than if they took a typical birth control pill containing 35 mcg of ethinyl estradiol.
One week after the federal announcement, its provincial health agency permitted school nurses to prescribe it and other birth control pills to girls as young as 14, without consent of their parents.
It was only after the widespread distribution of birth control pills in the 1960s that sexuality, household formation, and marriage all became separated from each other, marking a true sexual revolution in which young women, beginning with those in the middle classes, experienced economic, political, and sexual autonomy for the first time in history.
She and her fellow employees cannot get health care coverage for birth control pills or other forms of contraception.
Respondents were asked multiple fixed-response type questions concerning the effectiveness of condoms, when used consistently and correctly, for preventing STDs and pregnancy (very, somewhat, and not effective), how often birth control pills, when used consistently and correctly, prevent pregnancy (almost all, most, or some of the time), and how safe birth control pills are (very, somewhat, or not safe).