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
Not all STIs are transmitted during delivery. For example, infections like trichomoniasis are not typically transmitted during birth, whereas others like herpes simplex virus can be.
Choice B rationale
Some STIs, such as herpes and HIV, can be transmitted during vaginal delivery, posing a risk to the newborn. Preventative measures, including antiviral treatment, can reduce this risk.
Choice C rationale
A cesarean section is not always required to prevent STI transmission. It is recommended in cases of active genital herpes or uncontrolled HIV to reduce transmission risk.
Choice D rationale
Some STIs, such as HIV, can be transmitted through breastfeeding. It is important to follow medical guidelines to prevent postnatal transmission via breast milk.
Correct Answer is D
Explanation
Choice A rationale
Multiple gestation increases pregnancy risks but is not directly linked to cervical insufficiency, which involves premature cervical dilation leading to preterm birth or loss without uterine contractions.
Choice B rationale
Advanced maternal age presents various pregnancy risks, including chromosomal abnormalities and hypertension, but is not a primary risk factor for cervical insufficiency, which involves cervical structural issues.
Choice C rationale
A history of preterm labor involves previous early deliveries but does not specifically indicate cervical insufficiency, which is characterized by painless cervical dilation and effacement in the second trimester.
Choice D rationale
Cervical surgery, such as conization or LEEP, can weaken the cervical structure, increasing the risk of cervical insufficiency by reducing the cervix’s ability to remain closed during pregnancy.
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