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.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
The correct answer is choice B.History of uterine prolapse is a contraindication for the use of a diaphragm as a contraceptive method.Uterine prolapse is a condition where the uterus descends into the vagina, which can interfere with the proper placement and seal of the diaphragm.
Choice A is wrong because history of cervical cancer is not a contraindication for diaphragm use.
Cervical cancer is a malignant tumor of the cervix, which can be treated with surgery, radiation, or chemotherapy.
Diaphragm use does not affect the risk or treatment of cervical cancer.
Choice C is wrong because history of ovarian cysts is not a contraindication for diaphragm use.
Ovarian cysts are fluid-filled sacs that develop in or on the ovaries, which can cause pain, bloating, or irregular periods.
Diaphragm use does not affect the formation or rupture of ovarian cysts.
Choice D is wrong because history of menopause is not a contraindication for diaphragm use.
Menopause is the natural cessation of menstrual cycles and fertility, which occurs around age 50 in most women.
Diaphragm use does not affect the hormonal changes or symptoms of menopause.
Correct Answer is B
Explanation
The correct answer is choice B. Increased serum potassium level.Oral contraceptives can affect the levels of various electrolytes in the blood, such as sodium, potassium, calcium and magnesium.According to one study, oral contraceptives can increase the levels of serum copper, iron, calcium and cadmium, and decrease the levels of serum zinc, selenium, phosphorus and magnesium.
Therefore, a high serum potassium level can indicate an adverse effect of oral contraceptives on this client.
Choice A is wrong because oral contraceptives do not decrease serum glucose level.In fact, they can increase the plasma glucose level and insulin response, which can impair glucose tolerance and increase the risk of diabetes.
Choice C is wrong because oral contraceptives do not decrease serum triglyceride level.On the contrary, they can increase the fasting triglyceride level by 13 to 75 percent, which can elevate the risk of cardiovascular disease.
Choice D is wrong because oral contraceptives do not increase serum protein level.They can increase the levels of some apolipoproteins, such as A-I, A-II and B, but these are not the same as total protein.
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