Prenatal diagnosis of chorionicity in twins.

Hdl Handle:
http://hdl.handle.net/10147/207367
Title:
Prenatal diagnosis of chorionicity in twins.
Authors:
Hassan, T; O'Coigligh, S; Higgins, S
Affiliation:
Our Lady of Lourdes, Drogheda, Co Louth. tayyabahassan@hotmail.com
Citation:
Ir Med J. 2011 Sep;104(8):243-5.
Journal:
Irish medical journal
Issue Date:
1-Feb-2012
URI:
http://hdl.handle.net/10147/207367
PubMed ID:
22125879
Abstract:
The aim of this audit was to assess the accuracy of transabdominal ultrasound scan in predicting chorionicity in twin pregnancies in our unit. The presence or absence of lambda sign, T-sign, dividing membrane thickness and number of placentae were used to determine chorionicity. We retrospectively analysed these antenatal markers in 268 sets of twins delivered over a 5 year period and compared it with the postpartum placental histology and neonatal gender. Of 268 twin deliveries, 204 (76%) had both chorionicity and placental histology to compare. 67 of 84 (80%) were correctly diagnosed antenatally as monochorionic and 137 of 151 (91%) as dichorionic. In 31 cases (15%) the ultrasound diagnosis of chorionicity didn't match placental histology. Seventeen were thought to be monochorionic antenatally but were confirmed dichorionic on placental histology. Overall chorionicity was correctly diagnosed in 171/204 (84%) using transabdominal ultrasound scan (USS) in all trimesters. However the sensitivity and specificity of USS was much higher for dichorionic twins when carried out before 14 weeks of gestation.
Language:
eng
MeSH:
Adult; Chorion/*ultrasonography; Female; Gestational Age; Humans; Pregnancy; Retrospective Studies; Sensitivity and Specificity; *Twins; Ultrasonography, Prenatal/*methods
ISSN:
0332-3102 (Print); 0332-3102 (Linking)

Full metadata record

DC FieldValue Language
dc.contributor.authorHassan, Ten_GB
dc.contributor.authorO'Coigligh, Sen_GB
dc.contributor.authorHiggins, Sen_GB
dc.date.accessioned2012-02-01T10:21:43Z-
dc.date.available2012-02-01T10:21:43Z-
dc.date.issued2012-02-01T10:21:43Z-
dc.identifier.citationIr Med J. 2011 Sep;104(8):243-5.en_GB
dc.identifier.issn0332-3102 (Print)en_GB
dc.identifier.issn0332-3102 (Linking)en_GB
dc.identifier.pmid22125879en_GB
dc.identifier.urihttp://hdl.handle.net/10147/207367-
dc.description.abstractThe aim of this audit was to assess the accuracy of transabdominal ultrasound scan in predicting chorionicity in twin pregnancies in our unit. The presence or absence of lambda sign, T-sign, dividing membrane thickness and number of placentae were used to determine chorionicity. We retrospectively analysed these antenatal markers in 268 sets of twins delivered over a 5 year period and compared it with the postpartum placental histology and neonatal gender. Of 268 twin deliveries, 204 (76%) had both chorionicity and placental histology to compare. 67 of 84 (80%) were correctly diagnosed antenatally as monochorionic and 137 of 151 (91%) as dichorionic. In 31 cases (15%) the ultrasound diagnosis of chorionicity didn't match placental histology. Seventeen were thought to be monochorionic antenatally but were confirmed dichorionic on placental histology. Overall chorionicity was correctly diagnosed in 171/204 (84%) using transabdominal ultrasound scan (USS) in all trimesters. However the sensitivity and specificity of USS was much higher for dichorionic twins when carried out before 14 weeks of gestation.en_GB
dc.language.isoengen_GB
dc.subject.meshAdulten_GB
dc.subject.meshChorion/*ultrasonographyen_GB
dc.subject.meshFemaleen_GB
dc.subject.meshGestational Ageen_GB
dc.subject.meshHumansen_GB
dc.subject.meshPregnancyen_GB
dc.subject.meshRetrospective Studiesen_GB
dc.subject.meshSensitivity and Specificityen_GB
dc.subject.mesh*Twinsen_GB
dc.subject.meshUltrasonography, Prenatal/*methodsen_GB
dc.titlePrenatal diagnosis of chorionicity in twins.en_GB
dc.contributor.departmentOur Lady of Lourdes, Drogheda, Co Louth. tayyabahassan@hotmail.comen_GB
dc.identifier.journalIrish medical journalen_GB
dc.description.provinceLeinster-

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