© 2003 Fellowship of Postgraduate Medicine
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Antenatal testing
A conundrum from antenatal testing
1 Scottish Programme for Clinical Effectiveness in Reproductive Health
2 Department of Obstetrics and Gynaecology, Aberdeen Maternity Hospital, Aberdeen
Correspondence to:
Correspondence to:
Dr Martin Cameron, University Department of Obstetrics and Gynaecology, Clinical Research Room, Top Floor, Aberdeen Maternity Hospital, Cornhill Road, Aberdeen AB25 2ZD, UK;
m.j.cameron@abdn.ac.uk
Answers on p 482.
Keywords: prenatal diagnosis; ventriculomegaly; triploidy
| The first 150 words of the full text of this article appear below. |
A 30 year old primigravida booked into the department of obstetrics and gynaecology at 13 weeks by her last menstrual period. There was no medical history of note. Booking abdominal ultrasound scan revealed a singleton pregnancy with a crown rump length corresponding to a gestation of 10 weeks and 4 days. This discrepancy in "dates" was attributed to her conceiving within a cycle of stopping the combined oral contraceptive pill.
Biochemical screening for Down’s syndrome and open neural tube defect (NTD) was performed at 16 weeks. Her risk for an open NTD was reported as low (0.7 multiple of the median) and her risk for trisomy 21 had decreased from an age related risk of 1:796 to a biochemical determined risk of 1:5000.
At 20 weeks she attended for her routine fetal anomaly scan. The fetus was found to have mild bilateral cerebral ventriculomegaly of 11 mm and
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A conundrum from antenatal testing
Postgrad. Med. J. 2003 79: 482-483.[Extract] [Full Text] [PDF]
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