Effects of magnesium sulfate on the heart rate of preterm fetal sheep with intraamniotic inflammation

The specific findings of fetal heart rate (FHR) patterns after drug administrations under intraamniotic inflammation have not been clarified. This study aimed to investigate the effects of fetal magnesium sulfate (MS) injection on the heart rate of preterm fetal sheep with intraamniotic inflammation during increasing and decreasing levels of serum MS concentration.