الفهرس 
ProgesteroneOnly 14 pages are availabe for public view
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Abstract
Preterm birth is the leading cause of perinatal morbidity and mortality worldwide, and its prevention is an important healthcare priority. Almost 75% of perinatal deaths occur in infants born before 37 weeks’ gestation. Consequently, preterm birth is associated with a large burden of disease, high costs for medical care, special education, and institutionalized case for disabled infants. In threatened preterm labor before 34 weeks, delay of delivery for 48 hours allows antenatal corticosteroid treatment to improve fetal maturity.Preterm labor is defined as regular, painful, frequent uterine contractions causing a progressive effacement and dilatation of the cervix occurring before 37 completed weeks of gestation. Since uterine contractions are the most frequently recognized symptom and sign of preterm birth, inhibition of uterine contractions with tocolytic agents to prolong pregnancy and reduce neonatal complications has been and continues to be the focus of treatment of preterm labor. Different tocolytics are now being used to reduce the uterine contractility and prolonging the pregnancy for better fetal outcome such as B2-agonist, calcium-channel blockers, oxytocin antagonist myosin light chain inhibitor, progesterone. Non-steroidal anti-inflammatory drugs.