Utrogestan Versus Nifedipine as Tocolysis for Preterm Labor: a Randomised Controlled Trial

Inclusion Criteria: • Singleton pregnancy women between 22 and 34 weeks of gestation who presented with threatened preterm labor. Exclusion Criteria: * Multiple pregnancies * Women with Preterm Prelabour Rupture of Membrane * Fetal death * Women with bad obstetric history * Women with history of cervical incompetence * Contraindication to Nifedipine such as cardiovascular disease, hyperthyroidism, severe pre eclampsia or to Utrogestan * Maternal or fetal indication for immediate delivery, such as fetal distress, bleeding placenta previa, abruption placenta * Contraindication for tocolysis, for example severe pre eclampsia, intrauterine growth restriction, fetal anomaly, chorioamnionitis, significant antepartum haemorrhage * Cervical dilatation of 3cm or more * Patients with previous tocolytic treatment during this pregnancy * Women who refuse to participate in this study