Accuracy of ultrasound beyond 14 weeks to determine chorionicity of twin pregnancies

 

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dc.contributor.advisor Stewart, Chantal en_ZA
dc.contributor.advisor Van Zyl, Hetta en_ZA
dc.contributor.author Momberg, Zoe en_ZA
dc.date.accessioned 2016-09-30T11:34:50Z
dc.date.available 2016-09-30T11:34:50Z
dc.date.issued 2014 en_ZA
dc.identifier.citation Momberg, Z. 2014. Accuracy of ultrasound beyond 14 weeks to determine chorionicity of twin pregnancies. University of Cape Town. en_ZA
dc.identifier.uri http://hdl.handle.net/11427/22023
dc.description.abstract Determining the chorionicity of twin pregnancies is extremely important as this influences the frequency of surveillance, timing of delivery and management of complications. Monochorionic twins have 2.5 times the perinatal mortality of dichorionic twins, and in the case of a single intra-uterine fetal demise, the surviving twin of a monochorionic pair is at significant risk of neurological damage compared to a dichorionic pregnancy. Chorionicity can be accurately determined before 14 weeks gestation using the lambda or T-sign. After 14 weeks, these ultrasonographic signs become less reliable and the pregnancy may be assumed to be monochorionic for management purposes. The implication of this assumption is that on occasion premature dichorionic fetuses may be delivered unnecessarily. In South Africa, many women have their first antenatal visit after the first trimester or are not scanned by an experienced sonographer until after 14 weeks. There is thus a need for an accurate means to determine chorionicity in the second and third trimesters. en_ZA
dc.language.iso eng en_ZA
dc.subject.other Obstetrics and Gynaecology en_ZA
dc.title Accuracy of ultrasound beyond 14 weeks to determine chorionicity of twin pregnancies en_ZA
dc.type Thesis / Dissertation en_ZA
uct.type.publication Research en_ZA
uct.type.resource Thesis en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Health Sciences en_ZA
dc.publisher.department Department of Obstetrics and Gynaecology en_ZA
dc.type.qualificationlevel Masters en_ZA
dc.type.qualificationname MMed en_ZA
uct.type.filetype Text
uct.type.filetype Image


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