A nurse is caring for a client who is in active labor. The nurse notes early decelerations of the FHR on the fetal monitor tracing. The nurse should identify that which of the following conditions causes early decelerations in the FHR?
Fetal hypoxemia.
Cord compression.
Uteroplacental insufficiency.
Head compression.
The Correct Answer is D
Choice A rationale:
Fetal hypoxemia is associated with late decelerations in the fetal heart rate (FHR) tracing. It occurs when the fetus experiences a decreased supply of oxygen, typically due to placental insufficiency or maternal hypotension.
Choice B rationale:
Cord compression can lead to variable decelerations in the FHR tracing. It occurs when the umbilical cord is compressed, restricting blood flow to the fetus temporarily.
Choice C rationale:
Uteroplacental insufficiency causes late decelerations in the FHR tracing. It refers to an inadequate blood flow between the uterus and placenta, resulting in reduced oxygen supply to the fetus.
Choice D rationale:
Head compression is the correct answer for early decelerations in the FHR tracing. It happens during contractions when the fetal head is compressed by the maternal pelvis, leading to a temporary vagal response that slows the heart rate.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale:
Digoxin is a cardiac glycoside and is primarily used in the management of certain heart conditions, such as heart failure and atrial fibrillation. It is not indicated for hyperemesis gravidarum, which is severe and persistent vomiting during pregnancy.
Choice B rationale:
Calcium gluconate is a mineral supplement used to treat calcium deficiencies. It is not a standard treatment for hyperemesis gravidarum.
Choice C rationale:
Vitamin Bs (B6 and B12) are commonly used to manage hyperemesis gravidarum. Vitamin B6, also known as pyridoxine, has been shown to alleviate nausea and vomiting during pregnancy. Vitamin B12 may also be administered to help manage symptoms. Both vitamins are safe to use during pregnancy.
Choice D rationale:
Propranolol is a beta-blocker used to treat high blood pressure, heart conditions, and migraines. It is not recommended for managing hyperemesis gravidarum and is generally avoided during pregnancy due to potential risks to the developing fetus.
Correct Answer is A
Explanation
Choice A rationale:
Terbutaline is a medication commonly used to stop preterm labor by relaxing the uterine muscles. However, it is contraindicated in clients with heart disease or certain cardiac conditions, as it can cause cardiovascular side effects such as increased heart rate, palpitations, and potential arrhythmias.
Choice B rationale:
Cervical dilation of 2 cm is a typical sign of preterm labor, and the prescription for terbutaline is appropriate to prevent further cervical dilation and delay delivery.
Choice C rationale:
A gestational age of 34 weeks indicates preterm labor, which is precisely the scenario where terbutaline would be administered to halt labor progression and extend the pregnancy.
Choice D rationale:
Allergy to penicillin is unrelated to the administration of terbutaline, as they are different medications with distinct mechanisms of action and side effects.
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