Preterm birth is the major clinical problem associated with perinatal mortality and serious
neonatal morbidity and childhood disability in developed countries [1, 2]. Preterm birth is …

BACKGROUND Historically, clinicians have relied on medical risk factors and clinical
symptoms for preterm birth risk assessment. In nulliparous women, clinicians may rely solely …

Preterm birth, defined as delivery before 37 weeks of pregnancy, continues to be a leading
cause of perinatal complications and is responsible for approximately 80% of neonatal …

There has been considerable effort in recent years to untangle the enigma of spontaneous
preterm birth–and rightly so, given its extraordinary clinical, personal and economic impact …

The National Institute of Child Health and Human Development Maternal-Fetal Medicine
Units Network has completed 2 prospective, blinded observational studies of cervical …

In 2001 the United States incidence of preterm birth was 11.9%, the highest level observed
in over 2 decades [1]. The incidence of preterm birth has not changed appreciably in over 20 …

Ultrasound of the cervix during pregnancy has been the focus of much research in the last
few years, and significant advances have been made in understanding the proper role of …

Transvaginal ultrasonography has recently been shown to be an objective, reproducible and
reliable method to assess the cervix and predict the risk of preterm delivery in high-risk …

Objective To investigate whether cervical length measured by transvaginal ultrasonography
predicts spontaneous preterm birth at< 35 weeks' gestation in women with a history of …

Transvaginal ultrasound scanning of cervical length at approximately 20 weeks of gestation
in women attending for routine antenatal care is useful for predicting the likelihood of …