With all due respect to the other poster, you are talking about helping a premature baby stay off a ventilator, high levels of oxygen and such with the use of steroids. Moms are not given high dose steroids or given them long-term. High-dose and long term use can have serious side effects yes, but that it not what we are talking about to aid in lung development.
I was in the hospital 2 different times with my son. He ended up being born 8 weeks early (32 weeks exactly) and I was given 2 doses of steroids several hours apart at around 30 weeks. And that's all. It hurt but well worth it.
And I can tell you it may a tremendous difference in what could have been. My son was what they lovingly refer to as wimpy white boys lol. Premature white baby boys have the hardest time. My son was on the vent for less than 24 hours and on a cpap for less than 24 hours. Really, really good for a 32 week baby boy! My son did amazingly well for a 32 weeker.
Best to you and baby!