Brown CL, Colden KA, Hume RF, Johnson MP, Treadwell MC, Drugan A, Evans MI. Faint and positive amniotic fluid acetylcholinesterase with a normal sonogram.
Am J Obstet Gynecol 1996;
175:1000-3. [PMID:
8885764 DOI:
10.1016/s0002-9378(96)80041-x]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
OBJECTIVE
Both faint and positive amniotic fluid acetylcholinesterase determinations have been associated with fetal abnormalities. We evaluated the effect of a normal sonogram and positive or faint acetylcholinesterase level on the risk for anomalies.
STUDY DESIGN
Between Jan. 1, 1989, and Feb. 1, 1995, 4859 amniocenteses were performed. Twenty-three cases of abnormal acetylcholinesterase determinations combined with normal sonograms were identified, and pregnancy outcomes were determined.
RESULTS
One abnormal karyotype was identified (45,X/47,XXX mosaic). No neural tube defects were seen in infants with an abnormal acetylcholinesterase determination and normal sonogram. One fetus of a twin pregnancy had a ventral wall defect that was not detected on ultrasonography. Seventy-three percent of infants were normal at birth, but 27% of the pregnancies had abnormal outcomes.
CONCLUSIONS
Advances in ultrasonography have led to improved detection of fetal abnormalities. With a normal karyotype, repeat invasive testing may not be necessary.
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