First trimester ultrasound screening
نویسندگان
چکیده
منابع مشابه
Factors predicting a positive pregnancy screening test at first trimester
Background: For every pregnant woman, it is possible to have a child with chromosomal abnormalities. Although this possibility is not very high, by performing screening tests and considering the mother's background factors, we can largely realize the real extent of this possibility. Many comorbidities (like high blood pressure, diabetes, and obesity) and high-risk exposures (like alcohol consu...
متن کاملExpanded conventional first trimester screening
OBJECTIVE The study aims to determine the performance of a five (5) serum marker plus ultrasound screening protocol for T21, T18 and T13. METHOD Specimens from 331 unaffected, 34 T21, 19 T18 and 8 T13 cases were analyzed for free Beta human chorionic gonadotropin, pregnancy-associated plasma protein A, alpha-fetoprotein, placental growth factor and dimeric inhibin A. Gaussian distributions of...
متن کاملThe use of first trimester ultrasound.
OBJECTIVE To review the clinical indications for first trimester ultrasound. OUTCOME Proven clinical benefit from first trimester ultrasound. EVIDENCE MEDLINE search and bibliography reviews in relevant literature. VALUES Content and recommendations reviewed by the principal authors and the Diagnostic Imaging Committee of the Society of Obstetricians and Gynaecologists of Canada. Levels o...
متن کاملUltrasound evaluation of first trimester pregnancy complications.
OBJECTIVE To review the biological effects and safety of obstetric ultrasound. OUTCOME Outline the circumstances in which safety may be a concern with obstetric ultrasound. EVIDENCE Medline was searched, and a review of a document on this subject published by Health Canada and of bibliographies from identified articles was conducted. VALUES Review by principal authors and the Diagnostic I...
متن کاملFirst trimester ultrasound diagnosis of exencephaly
Objective The introduction of first trimester nuchal translucency measurement has resulted in earlier identification of foetuses with exencephaly. Exencephaly is an uncommon congenital malformation in which the flat bones of calvaria are absent leaving the brain completely exposed or protrudes through the defect in the cranial vault. Anencephaly may ensue as a result of prolonged exposure of th...
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ژورنال
عنوان ژورنال: BMJ
سال: 1998
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.317.7160.694