title: Umbilical cord insertion to the lower uterine segment is a risk factor for vasa previa.
abstract: The perinatal mortality rate of vasa previa is high if it is not prenatally diagnosed. Systematic strategies for vasa previa screening have been recommended. In this paper, three cases of vasa previa diagnosed prenatally, with umbilical cord inserted to the lower segment of the uterus, are presented. It should be considered that umbilical cord insertion to the lower uterine segment is a high risk for vasa previa. Ultrasound screening for cord insertion will make it possible to do efficient and certain detection of vasa previa.
authors.affiliation: Department of Obstetrics and Gynecology, Showa University School of Medicine, Shinagawa-ku, Tokyo, Japan. hasejun@oak.dti.ne.jp <hasejun@oak.dti.ne.jp>
authors.forename: Junichi
authors.initials: J
authors.lastname: Hasegawa
authors.forename: Ryu
authors.initials: R
authors.lastname: Matsuoka
authors.forename: Kiyotake
authors.initials: K
authors.lastname: Ichizuka
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Fujikawa
authors.forename: Akihiko
authors.initials: A
authors.lastname: Sekizawa
authors.forename: Takashi
authors.initials: T
authors.lastname: Okai
mesh_terms: D000328:Adult; D005260:Female; D005315:Fetal Diseases / Q000000981:diagnostic imaging; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D010922:Placenta Diseases / Q000000981:diagnostic imaging*; D011247:Pregnancy; D012307:Risk Factors; D016216:Ultrasonography, Prenatal / Q000379:methods; D014470:Umbilical Cord / Q000002:abnormalities* / Q000000981:diagnostic imaging*; D014599:Uterus / Q000000981:diagnostic imaging*