title: Intrauterine hemodynamic change in TTTS: the alterations in the inferior vena cava waveform in the donor fetus.
abstract: BACKGROUND
  Significant hemodynamic changes are commonly observed in both fetuses in twin-twin transfusion syndrome.
  
  
  RESULTS
  We describe two donor fetus cases in twin-twin transfusion syndrome associated with abnormal waveform patterns in the inferior vena cava after therapeutic amnioreduction. Subsequent echocardiographic examinations demonstrated progressive deterioration of the cardiac function in the recipient fetuses.
  
  
  CONCLUSIONS
  We suggest that alterations in the inferior vena cava waveform in the donor fetuses may contribute to the accurate prediction of deterioration in fetal circulation after amnioreduction.
authors.affiliation: Department of Obstetrics and Gynecology, The University of Tokushima, School of Medicine, Japan. mmorine@clin.med.tokushima-u.ac.jp
authors.forename: Mikio
authors.initials: M
authors.lastname: Morine
authors.forename: Kazuhisa
authors.initials: K
authors.lastname: Maeda
authors.forename: Masanori
authors.initials: M
authors.lastname: Suto
authors.forename: Takashi
authors.initials: T
authors.lastname: Kaji
authors.forename: Minoru
authors.initials: M
authors.lastname: Irahara
mesh_terms: D000328:Adult; D001783:Blood Flow Velocity; D005260:Female; D005330:Fetofetal Transfusion / Q000150:complications / Q000000981:diagnostic imaging* / Q000503:physiopathology*; D005333:Fetus / Q000098:blood supply*; D006801:Humans; D020896:Hypovolemia / Q000209:etiology* / Q000503:physiopathology; D011247:Pregnancy; D011272:Pregnancy, Multiple; D013318:Stroke Volume; D014430:Twins, Monozygotic; D016216:Ultrasonography, Prenatal / Q000379:methods*; D014682:Vena Cava, Inferior / Q000000981:diagnostic imaging / Q000502:physiology*