A nurse is reviewing the mechanism of action of IUDs with a group of nursing students.
Which of the following statements by a student indicates an understanding of the teaching?
“IUDs immobilize sperm and interfere with their migration from the vagina to the fallopian tubes.”.
“IUDs speed up the transport of the ovum through the fallopian tube.”.
“IUDs inhibit fertilization and cause lysis of the blastocyst.”.
All of the above
The Correct Answer is D
All of the above.
This is because IUDs have multiple mechanisms of action that prevent fertilization and implantation of the ovum. According to the search results, some of these mechanisms are:
- IUDs immobilize sperm and interfere with their migration from the vagina to the fallopian tubes. This is because copper ions released from copper IUDs are toxic for spermatozoa and impair their motility and viability. Hormonal IUDs also thicken the cervical mucus, which blocks sperm from entering the uterus.
- IUDs speed up the transport of the ovum through the fallopian tube. This is because IUDs induce a local inflammatory reaction in the endometrium, which affects the signaling between the uterus and the ovary and alters the tubal motility. This reduces the chances of fertilization by shortening the time window for sperm-egg interaction.
- IUDs inhibit fertilization and cause lysis of the blastocyst. This is because IUDs affect the function or viability of gametes, decreasing the rate of fertilization and lowering the chances of survival of any embryo that may be formed. IUDs also interfere with implantation of the fertilized ovum by creating a hostile environment in the uterine cavity.
Choice A is wrong because it only describes one mechanism of action of IUDs, not all of them.
Choice B is wrong because it only describes another mechanism of action of IUDs, not all of them.
Choice C is wrong because it only describes yet another mechanism of action of IUDs, not all of them.
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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 C
Explanation
The correct answer is choice C. The patient needs further teaching if they think that the implant can be inserted immediately after childbirth.According to Mayo Clinic, the implant should not be inserted until at least 21 days after giving birth, or until the milk supply is well established if breastfeeding.
Inserting the implant too soon may increase the risk of blood clots or decrease milk production.
Choice A is correct because condoms are still needed to protect against STIs, even if using the implant as a birth control method.Choice B is correct because irregular and unpredictable menstruation is a common side effect of the implant.Choice D is correct because the implant can prevent pregnancy for up to three years.
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