Agents that promote uterine relaxation by interfering with UC (uterine contraction)
Does not prevent PTB (preterm birth) but may delay it
Contraindicated with abruption, acute fetal distress or death, preeclampsia or eclampsia, active vaginal bleeding, dilation >6cm, chorioamnionitis (infection of amniotic fluid), or maternal hemodynamic instability
- => Medications most commonly used:
- Magnesium Sulfate: to stop UC's by relaxing, most effective.
- Terbutaline: injections in back SubQ to try to stop contraction, to relax muscles