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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
The correct answer is choice A.“You need to have a sperm count test to confirm your sterility.”
A sperm count test is a semen analysis that measures the number of sperm in the ejaculate.
It is the only way to verify that a vasectomy has been successful and that the man is sterile.A man is considered sterile when his sperm count is zero or below 100,000 non-motile sperm per sample.
Choice B is wrong because the number of ejaculations does not guarantee sterility.Some sperm may still be present in the severed vas deferens for months after a vasectomy.
Choice C is wrong because the duration of contraception use after a vasectomy depends on the sperm count test results, not on a fixed time period.It may take more or less than 3 months for a man to become sterile after a vasectomy.
Choice D is wrong because a repeat vasectomy is unnecessary and ineffective to ensure sterility.A vasectomy is a permanent birth control method that rarely fails or reverses.
Correct Answer is A
Explanation
The correct answer is choice A.A history of toxic shock syndrome (TSS) is a contraindication for the use of a diaphragm.
TSS is a rare but serious condition caused by a bacterial infection that can occur when using a diaphragm for too long or not cleaning it properly.
Choice B is wrong because a history of uterine fibroids is not a contraindication for the use of a diaphragm.
Uterine fibroids are benign tumors that grow in the uterus and usually do not affect the cervix or the fit of the diaphragm.
Choice C is wrong because a history of irregular menstrual periods is not a contraindication for the use of a diaphragm.
Irregular periods may be caused by various factors such as stress, hormonal imbalance, or medical conditions, but they do not affect the effectiveness or safety of the diaphragm.
Choice D is wrong because a history of breast cancer is not a contraindication for the use of a diaphragm.
Breast cancer is not related to the use of barrier methods of contraception such as the diaphragm.
However, some hormonal methods of contraception may increase the risk of breast cancer or be contraindicated for women who have or had breast cancer.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.