A nurse is evaluating the effectiveness of magnesium sulfate therapy for a client who is in pre-term labor.
Which of the following findings indicates that the therapy is successful?
The client reports decreased uterine contractions
The client’s blood pressure decreases to within normal limits
The client’s deep tendon reflexes are 2+
The client’s urine output increases to more than 30 mL/hr
The Correct Answer is A
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
“I will call my doctor if I have more than four contractions in an hour.” This statement indicates that the client understands the signs of preterm labor and when to seek medical attention.Preterm labor is defined as having regular contractions and cervical changes before 37 weeks of gestation.More than four contractions in an hour may indicate that preterm labor is occurring and requires prompt evaluation.
Choice A is wrong because drinking at least eight glasses of water every day is not a specific instruction for preventing preterm labor.However, dehydration can trigger contractions and should be avoided.
Choice B is wrong because lying on the back with a pillow under the knees can reduce blood flow to the uterus and the baby.This position can also increase the risk of blood clots in the legs.A better position is lying on the left side, which improves circulation and reduces pressure on the cervix.
Choice C is wrong because avoiding sexual intercourse until reaching term is not necessary for most women with a history of preterm labor.Sexual activity does not cause preterm labor or premature rupture of membranes (PROM).However, some women may be advised to abstain from sex if they have certain conditions, such as placenta previa or a short cervix.
Correct Answer is ["B","C","D","E"]
Explanation
Magnesium sulfate IV infusion can cause various adverse effects such asflushing,headache,nauseaanddrowsiness.
These are common and expected side effects of this medication.
Choice A is wrong because magnesium sulfate IV infusion does not causediarrhea.Diarrhea is a possible side effect of oral magnesium sulfate, which is used as a laxative.
However, oral magnesium sulfate is not used to treat pre-term labor or prevent seizures.
Normal ranges of magnesium in the blood are 1.7 to 2.2 mg/dL for adults.
Magnesium sulfate IV infusion is used to treat hypomagnesemia (low levels of magnesium in the blood) or to prevent seizures in pregnant women with pre-eclampsia, eclampsia or toxemia.
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