{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2023,11,16]],"date-time":"2023-11-16T22:19:17Z","timestamp":1700173157508},"reference-count":21,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2005,11,21]],"date-time":"2005-11-21T00:00:00Z","timestamp":1132531200000},"content-version":"vor","delay-in-days":4587,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Prenatal Diagnosis"],"published-print":{"date-parts":[[1993,5]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Thirty\u2010two third\u2010trimester amniotic fluid samples were studied according to the indication for amniocentesis, result of acetylcholinesterase (AChE) analysis, and outcome, in order to address the issue of the effectiveness of AChE testing late in gestation. The results indicate that third\u2010trimester AChE analysis is less effective than second trimester in distinguishing open neural tube defects (ONTDs) and ventral wall defects (VWDs) from other abnormalities. False\u2010positive results occurred in cases of isolated hydrocephaly (four of seven cases), polyhydramnios, and intrauterine growth retardation (IUGR). Caution is recommended in interpreting third\u2010trimester AChE tests, particularly when neither an ONTD nor a VWD is observed by ultrasound.<\/jats:p>","DOI":"10.1002\/pd.1970130508","type":"journal-article","created":{"date-parts":[[2007,3,4]],"date-time":"2007-03-04T06:50:06Z","timestamp":1172991006000},"page":"363-369","source":"Crossref","is-referenced-by-count":4,"title":["False\u2010positive amniotic fluid acetylcholinesterase analysis in the third trimester"],"prefix":"10.1002","volume":"13","author":[{"given":"Sharon F.","family":"Suchy","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Maria T.","family":"Yeager","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2005,11,21]]},"reference":[{"key":"e_1_2_1_2_1","doi-asserted-by":"publisher","DOI":"10.1002\/pd.1970040503"},{"key":"e_1_2_1_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9378(91)90530-5"},{"key":"e_1_2_1_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9378(86)90330-3"},{"key":"e_1_2_1_5_1","first-page":"607","article-title":"False\u2010positive acetylcholinesterase with early amniocentesis","volume":"74","author":"Burton B. 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