A nurse is administering terbutaline to a client who is at 31 weeks of gestation and has pre-term labor.
Which of the following findings should the nurse monitor as an adverse effect of this medication?
Hypotension
Tachycardia
Hyperglycemia
Hypokalemia
The Correct Answer is B
Tachycardia.
Terbutaline is a medication that can be used to stop or delay preterm labor by relaxing the uterine muscles. However, it can also cause serious side effects for both the mother and the baby. One of the most common side effects of terbutaline is tachycardia, which means a fast or irregular heartbeat. This can lead to chest pain, palpitations, shortness of breath, and even cardiac arrhythmias or ischemia.
Therefore, the nurse should monitor the mother’s heart rate and rhythm closely when administering terbutaline.
Choice A is wrong because terbutaline does not cause hypotension, which means low blood pressure. In fact, terbutaline can increase blood pressure by constricting blood vessels.
Choice C is wrong because terbutaline does not cause hyperglycemia, which means high blood sugar. However, terbutaline can interfere with insulin secretion and glucose metabolism in some cases, especially in diabetic mothers.
Therefore, the nurse should monitor the mother’s blood sugar levels when administering terbutaline.
Choice D is wrong because terbutaline does not cause hypokalemia, which means low potassium levels in the blood. However, terbutaline can cause a temporary increase in potassium levels in the baby, which can affect the baby’s heart function.
Therefore, the nurse should monitor the baby’s heart rate and rhythm when administering terbutaline.
Normal ranges for heart rate are 60 to 100 beats per minute for adults and 120 to 160 beats per minute for fetuses.
Normal ranges for blood pressure are typically between 90/60 mmHg and 120/80 mmHg.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Magnesium sulfate is a tocolytic drug that inhibits uterine activity and relaxes smooth muscles.The goal of magnesium sulfate therapy for a client who is in pre-term labor is to stop or reduce the frequency and intensity of contractions.
Choice B is wrong because the client’s blood pressure decreases to within normal limits.
Magnesium sulfate is not an antihypertensive drug and does not lower blood pressure.It is used to prevent seizures in clients with preeclampsia or eclampsia.
Choice C is wrong because the client’s deep tendon reflexes are 2+.
This is a normal finding and does not indicate the effectiveness of magnesium sulfate therapy.A decrease or loss of deep tendon reflexes may indicate magnesium toxicity, which is a serious complication that requires immediate intervention.
Choice D is wrong because the client’s urine output increases to more than 30 mL/hr.
This is also a normal finding and does not indicate the effectiveness of magnesium sulfate therapy.A decrease in urine output may indicate renal impairment or magnesium toxicity, which are both adverse effects of the drug.
The normal range for serum magnesium level is 1.5 to 2.5 mEq/L or 1.8 to 3 mg/dL.The therapeutic range for magnesium sulfate management is 5 to 8 mg/dL.
Correct Answer is A
Explanation
Betamethasone is a corticosteroid that is given to pregnant women who are at risk of preterm delivery to enhance fetal lung maturity and prevent respiratory distress syndrome.It is usually given in two doses, 24 hours apart, and takes effect within 24 hours of administration.
Choice B.Magnesium sulfate is wrong because it is used to prevent seizures in women with severe preeclampsia or eclampsia, not to prevent respiratory distress syndrome.
Choice C.Nifedipine is wrong because it is a calcium channel blocker that is used to inhibit uterine contractions and prolong pregnancy in women with preterm labor, not to prevent respiratory distress syndrome.
Choice D.Indomethacin is wrong because it is a nonsteroidal anti-inflammatory drug that is used to inhibit prostaglandin synthesis and reduce uterine activity in women with preterm labor, not to prevent respiratory distress syndrome.However, it can also cause premature closure of the ductus arteriosus in the fetus and should be avoided after 32 weeks of gestation.
Normal ranges for gestational age are 37 to 42 weeks.
Preterm labor is defined as regular uterine contractions with cervical changes.
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