Please select the eligibility criteria that correspond to the clinical trial below.
Title: STUDY ON EFFICACY OF UTROGESTAN AS TOCOLYSIS FOR PRETERM LABOR
Brief Summary: RESEARCH HYPOTHESIS

-Incidence of preterm delivery is lower in women treated with oral micronized progesterone (Utrogestan) as acute tocolysis agent compare to Nifedipine group with fewer maternal side effect


Options:
A: Inclusion Criteria:

* Gestational age between 24 0/7 - 31 5/7 weeks by LMP or ultrasound
* Documentation of rupture by demonstrating pooling or 2/3 diagnostic tests (pooling, ferning and nitrazine positivity)

Exclusion Criteria:

* Membrane rupture greater than 72 hours
* Persistent labor characterized by regular painful contractions with cervical change and/or cervix visually greater than 5 cm
* Chorioamnionitis defined by having 2 or more of the following: maternal temperature \> 100.4, persistent fetal tachycardia (\>170bpm), maternal tachycardia (\>110bpm) in the absence of other likely cause, uterine tenderness.
* Non-reassuring fetal heart rate tracing or biophysical testing
* Vaginal hemorrhage
* Lethal fetal anomalies
* Intrauterine fetal demise
* Maternal conditions which precludes expectant management
* Fetal condition which precludes expectant management
* Maternal allergy to indomethacin
* Maternal active gastritis
* Multiple gestations
* HIV with viral load \>1000
* HSV with active herpetic lesions
* Cervical cerclage
B: Inclusion Criteria:

* Placenta previa is diagnosed when the lowest placental edge is located within 5 cm of the internal os at ultrasonography
* Placenta previa may be symptomatic with at least one episode of bleeding
* Estimated gestational age within 24 to 34 weeks
* Maternal age \> 18 years
* Informed consent after received an explanation of the study and an information sheet
* Social affiliation

Exclusion Criteria:

* Premature rupture of membranes
* Severe bleeding requiring an immediate termination of pregnancy
* Abnormal fetal heart rates requiring an immediate termination of pregnancy
* Intrauterine fetal death
* Pre-eclampsia, chorioamnionitis, liver disease, severe chronic renal disease, heart disease
* Abruptio placentae
* Nifedipine sensibility
* Drugs interaction with nifedipine
C: 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
D: Inclusion Criteria:

* Initial episode of preterm labor for enrollment
* The diagnosis of preterm labor
* Gestational age between 24 and 32 weeks
* Singleton or twin gestation
* The ability to understand the requirements of the study

Exclusion Criteria:

* Cervical dilation \>5 cms
* Suspected chorioamnionitis
* Fetal distress
* Vaginal bleeding
* Severe pre-eclampsia
* History of gastrointestinal bleeding
* Abnormal renal function
* Suspicion of fetal malformation by ultrasound
* Known allergy to, or intolerance of, Magnesium sulfate and/or Indomethacin
* Documented rupture of amniotic membranes
* Multiple gestations of triplets or more.

Answer: C