title: Case reports of transient single umbilical artery blood flow in monochorionic twins.
abstract: We report two cases of transient single umbilical artery (UA) blood flow in growth-discordant monochorionic twins. The interval of single UA was for one week in case 1 and for a few days in case 2. We speculate a cord factor such as length, twisting, and insertion site can be the etiology of this condition.
authors.affiliation: Department of Fetal and Maternal Medicine, Nagara Medical Center, Gifu City, Japan. hiro-t@med.nagoya-u.ac.jp
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Tsuda
authors.forename: Yuichiro
authors.initials: Y
authors.lastname: Takahashi
authors.forename: Kaori
authors.initials: K
authors.lastname: Kigoshi
authors.forename: Tomotake
authors.initials: T
authors.lastname: Iwasa
authors.forename: Rika
authors.initials: R
authors.lastname: Nishihara
authors.forename: Shigenori
authors.initials: S
authors.lastname: Iwagaki
authors.forename: Ichiro
authors.initials: I
authors.lastname: Kawabata
mesh_terms: D000328:Adult; D005260:Female; D005865:Gestational Age; D006801:Humans; D011247:Pregnancy; D011272:Pregnancy, Multiple / Q000502:physiology*; D012039:Regional Blood Flow / Q000502:physiology*; D058529:Single Umbilical Artery / Q000000981:diagnostic imaging* / Q000503:physiopathology*; D014430:Twins, Monozygotic; D016216:Ultrasonography, Prenatal; D014469:Umbilical Arteries / Q000000981:diagnostic imaging / Q000502:physiology / Q000503:physiopathology