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Study shows magnesium sulfate reduces risk of cerebral palsy and death for very preterm babies

by Medical Xpress
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An international research collaboration conducting a comprehensive review of studies from across the globe has reaffirmed that magnesium sulfate, a medication widely used during pregnancy, significantly reduces the risk of cerebral palsy and death for very preterm babies.

The study, recently co-published in Obstetrics & Gynecology, was based on six trials involving 5917 women, pregnant with their 6759 babies. It compared the effects of sulfate with placebo, finding strong evidence for the brain protecting benefits of magnesium sulfate for very preterm infants.

One of the lead researchers, Dr. Emily Shepherd, a Postdoctoral Research Fellow and NHMRC Emerging Leadership Fellow at SAHMRI, says the results are significant for prematurity research, with magnesium sulfate being one of only two proven prevention strategies for cerebral palsy.

“Our review now demonstrates with high certainty, that magnesium sulfate, administered to women at risk of very preterm birth, can reduce the risk of cerebral palsy and death for their children up to two years of age,” Dr. Shepherd said.

All trials included women in preterm labor or with expected or planned before 34 completed weeks of their pregnancies. Magnesium sulfate was administered intravenously but various treatment protocols were used across the trials.

Importantly, the review showed that medicating with magnesium sulfate doesn’t raise the risk of preterm babies or their mothers incurring other short or long-term complications.

“While magnesium sulfate may cause minor side effects for women such as warmth and flushing, when used appropriately, it has not been shown to increase serious complications for women, such as death, cardiac or respiratory arrest,” Dr. Shepherd said. “The side effects commonly experienced are comparatively minor and generally tolerable given the significant potential upside for the .”

While magnesium sulfate is now a for preterm cerebral palsy prevention across the globe, Dr. Shepherd says many questions remain unanswered.

“We still don’t know if the effects of this treatment vary based on the characteristics of women and babies treated and the treatment protocols used,” Dr. Shepherd said.

“This means there’s currently different recommendations around the world for who, how and when to give magnesium sulfate, lowering confidence in the treatment.”

Supported by the Australian Cerebral Palsy Alliance, Dr. Shepherd and her team will now progress this research using the individual patient data from the trials. This is an efficient and cost-effective way to maximize the potential of the completed trials, and the contribution of all the women and children who have been involved.

“We’re optimistic our findings will lead to updated, consistent recommendations for the use of magnesium sulfate globally. Ultimately, this will help prevent more children from having ,” Dr. Shepherd said.

So far, these have been conducted in high-income countries. Researchers say broadening studies to encompass low and middle-income settings should be prioritized.

More information:
Emily S. Shepherd et al, Magnesium Sulfate Before Preterm Birth for Neuroprotection, Obstetrics & Gynecology (2024). DOI: 10.1097/AOG.0000000000005644

Provided by
South Australian Health and Medical Research Institute (SAHMRI)

Citation:
Study shows magnesium sulfate reduces risk of cerebral palsy and death for very preterm babies (2024, June 7)
retrieved 7 June 2024
from https://medicalxpress.com/news/2024-06-magnesium-sulfate-cerebral-palsy-death.html

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