Preterm premature rupture of the chorioamniotic membranes is a common obstetric complication, occurring in approximately 1-2% of pregnancies. The management of patients with preterm premature rupture of membranes (PPROM) is controversial, but most physicians advocate expectant management, especially in cases of extreme prematurity. Expectant management in the setting of preterm PROM has been associated with increased incidence of maternal-fetal infections, cord prolapse, pulmonary hypoplasia, and fetal distress. Chorioamnionitis, is an inflammation of the chrion and amnion characterized by leukocytic infiltration. Reliance on clinical criteria alone in order to diagnose amniotic fluid infection, may not be particularly useful. Clinical chorioamnionitis is present with PPROM and subsequently develops in 3-8% of women. The majority of cases of amniotic fluid infection in the setting of PPROM do not produce the signs and symptoms traditionally used as diagnostic criteria for clinical chorioamnionitis. Several laboratory tests to diagnose intra amniotic infection (IAI) in the patient with pre term premature rupture of membranes (PPROM) have been proposed. The most common test is a maternal leucocyte count. Infection-mediated preterm deliver¬ies should be preventable by antimicrobial treatment.Multiple definitions of oligohydramnios are used because no ideal cutoff level for intervention exists. The best definition may be amniotic fluid index < 5th percentile. Oligohydramnios is a complication in 0.5-5.5% of all pregnancies, and severe Oligohydramnios is a complication in 0.7% of pregnancies. Oligohydramnios is secondary to either an excess loss of fluid or a decrease in fetal urine production or excretion. The diagnosis is confirmed by means of ultrasonography.Placental abruption refers to the premature separa¬tion of the placenta from the underlying maternal surface. The primary cause of placental abruption is un-known, but there are several associated conditions. Although the precise cause of abruption is un¬known, most explanations center around vascular or placental abnormalities, including increased fragility of vessels, vascular malformations, or abnormalities in placentation. The majority of patients diagnosed with abruptioplacentae have either vaginal bleeding before or after membrane rupture. If there is fetal or maternal instability, the treatment of choice is cesarean section if conditions are stable, vaginal delivery may be attempted.There is a strong association between preterm PROM and abruption and adds additional insight into the role of intrauterine infection and oligohydramnios in the pathogenesis of abruption preterm PROM and intrauterine infection are strong risk factors for abruption; oligohydramnios in the presence of preterm PROM increases the risk of placental abruption and women with preterm PROM managed expectantly are at increased risk of developing abruption if the latency between the time of membrane rupture and delivery exceeds 24 hours. Physicians should be aware of this complication when managing such patients.