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 A
Explanation
Choice A reason: This is the best advice for the woman, as it acknowledges that jogging is safe and beneficial in early pregnancy, but also informs her that she may need to adjust her exercise intensity and duration as her pregnancy progresses. Walking is a low-impact aerobic activity that can be done throughout pregnancy, as long as there are no complications or contraindications. Walking can help maintain cardiovascular fitness, prevent excessive weight gain, and reduce the risk of gestational diabetes and preeclampsia.
Choice B reason: This is not a good advice for the woman, as it implies that jogging is harmful for her joints and that she should stop it immediately. Jogging is not necessarily bad for the joints, as long as the woman wears appropriate shoes, avoids uneven surfaces, and listens to her body. Jogging can also provide many health benefits for the woman and the fetus, such as improved mood, increased energy, and reduced stress².
Choice C reason: This is a false and alarming statement that may discourage the woman from exercising at all. Exercise during pregnancy is not dangerous for the fetus unless there are specific medical conditions or complications that prevent it. Exercise during pregnancy can improve the fetal growth, development, and oxygenation, as well as reduce the risk of preterm birth and low birth weight.
Choice D reason: This is an unrealistic and misleading statement that may cause the woman to overexert herself or ignore the signs of discomfort or fatigue. Exercise during pregnancy may need to be modified according to the woman's changing needs, abilities, and preferences. Some factors that may affect the type, frequency, intensity, and duration of exercise during pregnancy include the trimester, the fetal position, the maternal weight, the environmental temperature, and the presence of any symptoms or complications.
Correct Answer is ["B","C","D"]
Explanation
Choice A reason: Abstinence is the avoidance of sexual activity, which reduces the risk of exposure to STIs. It is not a sexual risk behavior.
Choice B reason: Multiple sex partners increases the likelihood of exposure to STIs, especially if the partners are not tested or treated. It is a sexual risk behavior.
Choice C reason: Unprotected anal intercourse exposes the mucous membranes of the rectum and anus to potential pathogens, which can cause STIs such as gonorrhea, chlamydia, syphilis, and HIV. It is a sexual risk behavior.
Choice D reason: Oral sex involves contact between the mouth and the genitals or anus, which can transmit STIs such as herpes, HPV, gonorrhea, and syphilis. It is a sexual risk behavior.
Choice E reason: Dry kissing is the contact between the lips without the exchange of saliva, which does not transmit STIs. It is not a sexual risk behavior.
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