Abstract: ［Abstract］ Objective〖HTSS〗〓To explore the complication, delivery model of pregnancy and the outcomes of premature infant on early preterm premature rupture with residue oligohydramnios.
〖HTH〗〖WTHZ〗Methods〖HTSS〗〓Two hundred and twentyfive cases of 26-33+6 weeks of singletons pregnant women were divided into four groups. Sixtyseven cases of residue oligohydramnios were group A, including group A1 which is 32 cases of 26-31+6 weeks of singletons pregnant women and group A2 which is 35 cases of 32-33+6 weeks of singletons pregnant women . One hundred and fiftyeight cases of normal amniotic fluid were group B, including group B1 which is 78 cases of 26-31+6 weeks of singletons pregnant women and Group B2 which is 80 cases of 32-33+6 weeks of singletons pregnant women .The indexes such as the complication, delivery model of pregnant and the outcomes of premature infant were compared in the four groups.
〖HTH〗〖WTHZ〗Results〖HTSS〗〓In group A1,WBC count is above than that in group B1 and B2; Creactive protein is higher than that in group A2, B1, B2. Latency period is lower in group A1 than that in group B1 and B2, but is higher than that in group A2, also it is lower in group A2 than group B1 and B2, it is higher in group B1 than that in group B2. The cesarean section rate of group A1 is higher than group A2, B1, B2. Chorioamnionitis is higher in group A1 than in group B1 and B2, it is also higher in group A2 than that in group B2. Fetal distress is above in group A1 than in group A2, B1, B2. Amniotic fluid contamination is lower in group B1 and B2 than that in group A1 and A2. Puerperal infection is higher in group A1 than that in group B1 and B2. There are significant difference in these groups(P＜005). The premature infants asphyxia rate is lower and the death rate is higher in group A1 than that in group B1 and B2. Apgar score 1 min≤7 is higher in group A1 than that in group B1 and B2, also it is higher in  group A2 than group B2. Apgar score 5 min≤7, assisted respiration and intrauterine infection are all higher in group A1 than that in group B1 and B2. Umbilical cord inflammation in group A1 and A2 is above than that in group B2. The pH of umbilical arterial is lower in group A1 and A2 than that in group B1 and B2. There are significant difference in all these groups(P＜005). In group A1 and A2 with AFI≤20 mm, neonatal mortality and cesarean section rate are significantly different in the two groups(P＜005).
〖HTH〗〖WTHZ〗Conclusion〖HTSS〗〓Patients of residue oligohydramnios with early preterm premature rupture of membranes should be monitored closely，the smaller of the gestational age, the greater damage of the mother and children. In the same gestational age, residual oligohydramnios were associations with the higher rate of the cesarean section, maternal infection, premature infants asphyxia and mortality; also were associations with the shorter of latency period. The mortality of premature infants of 26-31+6 weeks with AFI≤20 mm is more higher, the cesarean delivery should be choosed carefully.

Key words: fetal membranes, premature rupture； , obstetric labor, premature； oligohydramnios