Teratogen exposures cause 1-2% of @entity154 . Our anecdotal experience was that detailed fetal sonograms conducted for the indication of teratogen exposure failed to demonstrate significant @entity154 . We reviewed our experience to see how often such examinations yielded positive results. Records from 11 September 1989 to 13 September 1993 were reviewed. All @entity1 referred for detailed fetal sonography for the sole indication of exposure to drugs, toxins, or infectious agents and with a sonographic age of 16-24 menstrual weeks were included. All exposures were included in the study, even those without known teratogenic potential. @entity1 previously diagnosed with a morphological abnormality or with an abnormal level of maternal serum @entity160 were excluded.A total of 125 @entity1 with 126 singleton pregnancies comprised the study population. Ten @entity1 had multiple exposures. Including the multiple exposures, there was a total of 138 exposures, 104 to drugs and other toxins (45 of which were not known @entity1 teratogens), and 34 to infections. The only significant morphological abnormality found was a duplicated kidney in a @entity1 with parvovirus exposure. While parvovirus is a cause of @entity417 and @entity4 , it is not a known @entity1 teratogen. We therefore assume that this was a coincidental association. We conclude that teratogen exposure is a low-yield indication for detailed fetal sonography.

Teratogen exposure: lack of XXXX by detailed fetal sonography.

@entity1 :: ('9606', 'Species') :: ['women', 'Patients', 'human', 'woman'] @entity154 :: ('MESH:D000013', 'Disease') :: ['congenital abnormalities', 'morphological abnormalities'] @entity417 :: ('MESH:D000740', 'Disease') :: ['anemia'] @entity4 :: ('MESH:D004487', 'Disease') :: ['hydrops'] @entity160 :: ('174', 'Gene') :: ['alpha-fetoprotein']
@entity154 :: (MESH:D000013,Disease) :: ['morphological abnormalities']
