A patient is admitted to labor and delivery for management of severe preeclampsia. An IV infusion of magnesium sulfate is ordered. What is the primary goal for magnesium sulfate therapy?
Decrease proteinuria.
Prevent maternal seizures.
Reduce deep tendon reflexes.
The Correct Answer is B
Choice A rationale
Decrease proteinuria is not the primary goal for magnesium sulfate therapy. It's an indicator of kidney function and hypertension severity. Therapy focuses on neuroprotection and seizure prevention. Proteinuria reflects preeclampsia's renal impact, not neuroprotection.
Choice B rationale
Prevent maternal seizures is magnesium sulfate's primary goal. It stabilizes neuronal membranes, reducing seizure risk in severe preeclampsia. By inhibiting NMDA receptors and calcium channels, it prevents seizures, critical for maternal-fetal safety.
Choice C rationale
Reduce deep tendon reflexes is not magnesium sulfate's primary goal, but a side effect. It signifies therapeutic levels, indicating potential toxicity. Reflex reduction helps assess magnesium toxicity risk, ensuring safe neuroprotective dosing.
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Related Questions
Correct Answer is B
Explanation
Choice A rationale
Breastfeeding a newborn 6-8 times a day is insufficient. Newborns typically need more frequent feedings to ensure adequate nutrition and growth, generally more than 8 times.
Choice B rationale
Newborns should be breastfed 8-12 times in a 24-hour period. This frequent feeding ensures they receive enough nutrients, helps establish milk supply, and supports healthy growth.
Choice C rationale
Feeding 10-14 times a day can be appropriate for some newborns but may not be necessary for all. The standard recommendation is 8-12 times, balancing nourishment and mother's comfort.
Choice D rationale
Breastfeeding 12-16 times a day is excessive and may cause maternal fatigue and discomfort. The general guideline of 8-12 times is sufficient to meet a newborn's nutritional needs.
Correct Answer is B
Explanation
Choice A rationale
Decreased fetal heart rate can occur due to uteroplacental insufficiency but is not specific to hypertonic contractions.
Choice B rationale
The uterus may not relax between contractions, leading to a lack of rest periods for the fetus and compromised blood flow.
Choice C rationale
Easily indentable contractions are characteristic of hypotonic contractions, not hypertonic ones.
Choice D rationale
Weak and ineffective contractions indicate hypotonic labor, contrasting the excessive strength of hypertonic contractions.
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