上海交通大学医学院：《妇产科学》（双语） 57 Preterm labor

Uterine causes Myomata(particularly submucosal or subplacental) Uterine septum Bicornuate uterus Cervicalincompetence Abnormal placentation

• Uterine causes Myomata (particularly submucosal or subplacental) Uterine septum Bicornuate uterus Cervical incompetence • Abnormal placentation

Infectious causes Chorioamnionitis Bacterial vaginosis Asymptomatic bacteriuria Acute pyelonephritis Cervical/vaginal colonization Fetal causes Intrauterine fetal death Intrauterine growth retardation Congenital anomalies

• Infectious causes Chorioamnionitis Bacterial vaginosis Asymptomatic bacteriuria Acute pyelonephritis Cervical/vaginal colonization • Fetal causes Intrauterine fetal death Intrauterine growth retardation Congenital anomalies