A nurse is caring for a client with HELLP syndrome who is receiving magnesium sulfate intravenously.
What is the main purpose of this medication?
To prevent seizures
To lower blood pressure
To increase urine output
To improve platelet count
The Correct Answer is A
Choice A rationale: Magnesium sulfate acts as a central nervous system depressant. In HELLP syndrome and preeclampsia, its primary therapeutic purpose is to provide seizure prophylaxis by decreasing neuromuscular irritability and excitability.
Choice B rationale: While magnesium sulfate may cause slight vasodilation, it is not an antihypertensive agent. Elevated blood pressure in HELLP syndrome is managed with specific medications like hydralazine, labetalol, or nifedipine.
Choice C rationale: Magnesium sulfate does not function as a diuretic. In fact, adequate urine output is a critical assessment for magnesium toxicity, as the medication is primarily excreted by the kidneys.
Choice D rationale: Magnesium sulfate has no direct effect on bone marrow or platelet production. HELLP syndrome is characterized by low platelets; improvement usually only occurs following delivery or resolving the underlying condition.
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Related Questions
Correct Answer is C
Explanation
The target blood pressure goal for a client with severe pre-eclampsia is less than 160/110 mmHg.
This is because lowering the blood pressure too much or too fast can compromise the placental perfusion and fetal oxygenation.
Choice A is wrong because it is the target blood pressure goal for a client with chronic hypertension or gestational hypertension without severe features.
Choice B is wrong because it is the target blood pressure goal for a client with mild pre-eclampsia.
Choice D is wrong because it is too high and can increase the risk of maternal and fetal complications such as stroke, eclampsia, placental abruption, and fetal growth restriction.
Normal blood pressure ranges are less than 120/80 mmHg for systolic and diastolic pressures respectively.
Correct Answer is A
Explanation
Choice A rationale: Magnesium sulfate acts as a central nervous system depressant. In HELLP syndrome and preeclampsia, its primary therapeutic purpose is to provide seizure prophylaxis by decreasing neuromuscular irritability and excitability.
Choice B rationale: While magnesium sulfate may cause slight vasodilation, it is not an antihypertensive agent. Elevated blood pressure in HELLP syndrome is managed with specific medications like hydralazine, labetalol, or nifedipine.
Choice C rationale: Magnesium sulfate does not function as a diuretic. In fact, adequate urine output is a critical assessment for magnesium toxicity, as the medication is primarily excreted by the kidneys.
Choice D rationale: Magnesium sulfate has no direct effect on bone marrow or platelet production. HELLP syndrome is characterized by low platelets; improvement usually only occurs following delivery or resolving the underlying condition.
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