Magnesium sulfate to women in preterm labor (or with a medically indicated elective preterm birth) has been shown to reduce the risk of cerebral paresis, as I understand, at least in surviving infants.

NICE in the UK writes extensively about the research and their conclusions in this guideline from 2015 (on page 276-289).
Here is the summary of recommendations .

It would be interesting to hear whether this is an established practise in your settings.

To my knowledge, Mg sulfate is not yet implemented in Swedish guidelines (but as I have heard - a national guidelines should be a work-in-progress)

US IF WE TRY TO USE IT FOR THESE EVIDENCE MAINLY IN THE THREAT OF PREMATURE BIRTH FOR THE PROTECTION OF THE NEWBORN BY THESE EVIDENCES

ACOG NUM 455 MARCH 2010 REAFFIRMED 2016.tiff

Clin Perinatol 45 (2018) 579–595.tiff

Perinatal Continuing Education Program (PCEP), 3rd Edition.tiff