This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: AIIMS 2019, Subject name: Gynaecology & Obstetrics
Which of the following drugs used for management of preterm labor for also has Neuro- protective role in fetus:- 
Select and explain. 
A. MgSO4, B. Nifedipine, C. Ritodrine, D. Isoxsuprine
A: MgSO4
Answer: A: MgSO4 
Explanation: Preterm labour is labour staing before 37 weeks MANAGEMENT FOR PRETERM LABOUR :- 1) For lung maturity - steroids 2) Tocolytics E.g. - Nifedipine - First line & safest drug MgSo4 - Neuroprotective Very low bih wt. neonates whose mothers were treated with MgSo4 for preterm labor or preeclampsia were found to have a reduced incidence of cerebral palsy at 3 years. Rate of both neonatal death & cerebral palsy were lower in the Mg treated group.