title: Acute intrapartum fetoplacental transfusion in monochorionic twin pregnancy.
abstract: BACKGROUND
  The risk of antenatal fetofetal transfusion in monochorionic twin pregnancies has been noted, but possible acute intrapartum transfusion has not been studied extensively. Acute fetoplacental transfusion after the birth of the first twin can be disastrous to the second twin, so it deserves description.
  
  
  METHODS
  We present three cases of acute intrapartum fetoplacental transfusion after successful deliveries of first twins. After the births of their cotwins, the second twins rapidly deteriorated and were born severely hypovolemic and anemic.
  
  
  CONCLUSIONS
  The risk of acute intrapartum transfusion should be kept in mind when planning delivery of monochorionic twins.
authors.affiliation: Department of Obstetrics and Gynecology, Tampere University Hospital, Finland.
authors.forename: J
authors.initials: J
authors.lastname: Uotila
authors.forename: O
authors.initials: O
authors.lastname: Tammela
mesh_terms: D000208:Acute Disease; D000328:Adult; D005260:Female; D005331:Fetomaternal Transfusion / Q000175:diagnosis; D006801:Humans; D007744:Obstetric Labor Complications / Q000175:diagnosis; D011247:Pregnancy; D011272:Pregnancy, Multiple; D014430:Twins, Monozygotic