The most common cause of decreased variability in the fetal heart rate (FHR) that lasts 30 minutes or less is:
fetal sleep cycles.
umbilical cord compression.
altered cerebral blood flow.
fetal hypoxemia.
The Correct Answer is A
Choice A reason: Fetal sleep cycles are a normal physiological cause of decreased variability in the FHR, which is the fluctuation of the baseline FHR above and below 2 cycles per minute. Fetal sleep cycles usually last 20 to 40 minutes and do not affect the fetal well-being.
Choice B reason: Umbilical cord compression is an abnormal cause of decreased variability in the FHR, as it reduces the blood flow and oxygen delivery to the fetus. It can also cause variable decelerations, which are abrupt decreases in the FHR below the baseline.
Choice C reason: Altered cerebral blood flow is an abnormal cause of decreased variability in the FHR, as it indicates a compromise in the fetal central nervous system. It can also cause late decelerations, which are gradual decreases in the FHR after the peak of a contraction.
Choice D reason: Fetal hypoxemia is an abnormal cause of decreased variability in the FHR, as it reflects a severe lack of oxygen in the fetal blood. It can also cause sinusoidal pattern, which is a smooth, undulating waveform in the FHR.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason: Syphilis is a bacterial STI caused by Treponema pallidum. It is characterized by three stages: primary, secondary, and tertiary. It can cause serious complications such as neurosyphilis, cardiovascular syphilis, and congenital syphilis. However, it is not the most common bacterial STI.
Choice B reason: Candidiasis is a fungal infection caused by Candida albicans. It is not a STI, but rather an opportunistic infection that can affect the vagina, mouth, skin, or other mucous membranes. It can cause symptoms such as itching, burning, discharge, and inflammation.
Choice C reason: Gonorrhea is a bacterial STI caused by Neisseria gonorrhoeae. It can infect the urethra, cervix, rectum, throat, or eyes. It can cause symptoms such as dysuria, discharge, pelvic pain, and bleeding. It can also lead to complications such as pelvic inflammatory disease, epididymitis, infertility, and disseminated gonococcal infection. However, it is not the most common bacterial STI.
Choice D reason: Chlamydia is a bacterial STI caused by Chlamydia trachomatis. It is the most common bacterial STI, affecting about 2.86 million people in the United States in 2018. It can infect the urethra, cervix, rectum, throat, or eyes. It can cause symptoms such as dysuria, discharge, pelvic pain, and bleeding. It can also lead to complications such as pelvic inflammatory disease, epididymitis, infertility, and ectopic pregnancy.
Correct Answer is C
Explanation
Choice A reason: This is incorrect because a donor embryo is not used in IVF-ET. A donor embryo is an embryo that was created from another couple's gametes and donated to an infertile couple. IVF-ET uses the couple's own gametes to create an embryo.
Choice B reason: This is incorrect because it is dismissive and unprofessional. The nurse should respect the husband's curiosity and provide accurate and clear information about the procedure. The nurse should also address any concerns or questions that the couple may have.
Choice C reason: This is correct because it is a concise and accurate description of the IVF-ET procedure. The nurse explains the main steps and the purpose of the procedure in simple terms.
Choice D reason: This is incorrect because donor sperm is not used in IVF-ET. Donor sperm is sperm that was obtained from another man and donated to an infertile couple. IVF-ET uses the husband's own sperm to fertilize the wife's eggs.
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