Document Detail

Velamentous cord insertion and unequal placental territories in monochorionic twins with and without twin-to-twin-transfusion syndrome.
MedLine Citation:
PMID:  17306663     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: The objective of this study was to determine the incidence of velamentous cord insertion and placental territory discordancy in monochorionic twins with and without twin-to-twin transfusion syndrome (TTTS). STUDY DESIGN: All consecutive placentas of monochorionic twins delivered at our center between June 2002 and April 2006 were studied with vascular injection of the umbilical vessels with colored dyes. Velamentous cord insertions were recorded and individual placental territories were calculated by computer analysis. RESULTS: A total of 76 monochorionic placentas with TTTS and 63 monochorionic placentas without TTTS were studied. The incidence of velamentous cord insertion (per fetus) in the TTTS group and the non-TTTS group was 13% (20 of 152) and 14% (18 of 126), respectively (P = .79). Placental territory discordancy in the TTTS group and the non-TTTS group was 20% and 20% (P = 0.83). In the TTTS group, donor twins had a velamentous cord insertion more often than recipient twins (24% and 3%, respectively, P < .001) and a smaller placental territory (44% and 56%, respectively, P < .001). CONCLUSION: Our findings suggest that velamentous cord insertion and unequal placental territory are not critical factors for the development of TTTS.
Enrico Lopriore; Marieke Sueters; Johanna M Middeldorp; Dick Oepkes; Frans J Walther; Frank P H A Vandenbussche
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  American journal of obstetrics and gynecology     Volume:  196     ISSN:  1097-6868     ISO Abbreviation:  Am. J. Obstet. Gynecol.     Publication Date:  2007 Feb 
Date Detail:
Created Date:  2007-02-19     Completed Date:  2007-04-12     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370476     Medline TA:  Am J Obstet Gynecol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  159.e1-5     Citation Subset:  AIM; IM    
Division of Neonatology, Department of Pediatrics, Leiden University Medical Center, Leiden, The Netherlands.
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MeSH Terms
Fetofetal Transfusion / etiology*
Placenta / abnormalities
Placenta Diseases / epidemiology*
Twins, Monozygotic
Umbilical Cord / abnormalities*

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