A nurse is caring for a client who is at 28 weeks of gestation and has a blood pressure of 160/100 mm Hg.
The nurse should anticipate a prescription for which of the following medications?
Hydralazine
Nifedipine
Labetalol
Methyldopa
The Correct Answer is C
Labetalol is an antihypertensive drug that can lower blood pressure in pregnant women with preeclampsia. Preeclampsia is a condition that causes high blood pressure and proteinuria after 20 weeks of gestation.
Choice A is wrong because hydralazine is not recommended as a first-line treatment for preeclampsia due to its potential adverse effects on maternal and fetal outcomes.
Choice B is wrong because nifedipine is not licensed for use in pregnancy and may interact with magnesium sulfate, which is an anticonvulsant medication used to prevent or treat seizures in severe preeclampsia.
Choice D is wrong because methyldopa is not effective for acute blood pressure control and may cause adverse effects such as depression, sedation, and hemolytic anemia.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Respiratory rate 10/min.This indicatesmuscle weaknessanddifficulty breathing, which are symptoms ofmagnesium toxicity.Magnesium sulfate is a medication that can cause magnesium overdose if given in excess or if the patient has impaired kidney function.
Choice B.Urine output 40 mL/hr is wrong because this is within the normal range for urine output, which is 30 to 50 mL/hr.Urine output may decrease in severe cases of magnesium toxicity due to urine retention.
Choice C. Patellar reflex 2+ is wrong because this is a normal finding for the knee-jerk reflex.A low or absent patellar reflex may indicate magnesium toxicity, as it reflectsmuscle weaknessandnerve dysfunction.
Choice D.Serum magnesium level 4.5 mEq/L is wrong because this is within the normal range for serum magnesium, which is 1.7 to 2.3 mEq/L.Serum magnesium levels above 2.6 mEq/L can indicate hypermagnesemia or magnesium overdose.
Correct Answer is C
Explanation
Oligohydramnios on ultrasound.Oligohydramnios is a condition where the amniotic fluid volume is less than expected for gestational age.It can be a sign of fetal compromise due to various causes, such as renal abnormalities, placental insufficiency, premature rupture of membranes, or chromosomal anomalies.Oligohydramnios can lead to complications such as fetal deformities, preterm birth, infection, or stillbirth.
Choice A is wrong because a fetal heart rate of 140 beats/min is within the normal range for most of pregnancy.
Choice B is wrong because fetal movement of 10 times in an hour is also within the normal range and indicates fetal well-being.
Choice D is wrong because a reactive nonstress test is a reassuring sign that the fetus is not hypoxic or stressed.
Normal ranges:
• Amniotic fluid index (AFI): 5-25 cm
• Fetal heart rate: 110-160 beats/min
• Fetal movement: at least 10 movements in 2 hours
• Nonstress test: at least two accelerations of fetal heart rate of 15 beats/min for 15 seconds or more in 20 minutes
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