A nurse is teaching a client who is prescribed COCs about the mechanism of action of these pills.
The nurse should explain that COCs prevent pregnancy by?
Inhibiting the production of follicle-stimulating hormone (FSH) and luteinizing hormone (LH)
Increasing the production of prostaglandins that cause uterine contractions
Decreasing the permeability of the fallopian tubes to sperm and egg
Suppressing ovulation, thickening cervical mucus and altering the uterine lining
The Correct Answer is A
The correct answer is choice A. COCs prevent pregnancy by inhibiting the production of follicle-stimulating hormone (FSH) and luteinizing hormone (LH), which are responsible for ovulation.
By suppressing ovulation, COCs prevent the release of a mature egg that can be fertilized by sperm.
Choice B is wrong because COCs do not increase the production of prostaglandins that cause uterine contractions.
Prostaglandins are involved in inflammation and pain, and are not directly related to contraception.
Choice C is wrong because COCs do not decrease the permeability of the fallopian tubes to sperm and egg.
The fallopian tubes are the site of fertilization, and COCs do not affect their function.
Choice D is partially correct but not the best answer. COCs do suppress ovulation, but they also have other mechanisms of action, such as thickening cervical mucus and altering the uterine lining.
These effects make it harder for sperm to reach the egg and for a fertilized egg to implant in the uterus.
Therefore, choice D does not capture the full mechanism of action of COCs.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
The correct answer is choice A.COCs can reduce the risk of endometrial, ovarian and colon cancer.This is because COCs suppress ovulation and reduce inflammation in the genital tract, which may lower the exposure to carcinogens and mutagens.
Choice B is wrong because COCs do not increase bone density or prevent osteoporosis.In fact, some studies have suggested that COCs may have a negative effect on bone mineral density.
Choice C is wrong because COCs do not enhance fertility or improve menstrual regularity.
COCs prevent pregnancy by inhibiting ovulation, which means that they temporarily suppress fertility.COCs may also cause irregular bleeding or amenorrhea in some women.
Choice D is wrong because COCs do not lower blood pressure or cholesterol levels.On the contrary, COCs may increase the risk of hypertension and dyslipidemia in some women, especially those who smoke, are obese, or have a family history of cardiovascular disease.
Correct Answer is C
Explanation
The correct answer is choice C. Copper intrauterine device.This is because copper intrauterine devices do not contain hormones and are therefore safe for women with a history of breast cancer and cardiovascular disease.
Some possible explanations for the other choices are:
- Choice A. Injectable progestins.This is wrong because injectable progestins may increase the risk of breast cancer in women with the BRCA1 geneand may also worsen hypertension and dyslipidemia.
- Choice B. Contraceptive vaginal ring.This is wrong because contraceptive vaginal rings contain estrogen and progestin, which may increase the risk of thromboembolic events, stroke, and myocardial infarction in women with cardiovascular disease.
- Choice D. Combined oral contraceptives.This is wrong because combined oral contraceptives also contain estrogen and progestin, which have the same risks as contraceptive vaginal rings for women with cardiovascular disease.Additionally, combined oral contraceptives may interact with some medications used to treat chronic conditions and reduce their effectiveness.
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