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THE ROLE OF REDUCED EAR SIZE IN THE PRENATAL DETECTION OF CHROMOSOMAL ABNORMALITIES
Author(s) -
SHIMIZU TAKASHI,
SALVADOR LYNN,
HUGHESBENZIE RHIA,
DAWSON LAURA,
NIMROD CARL,
ALLANSON JUDITH
Publication year - 1997
Publication title -
prenatal diagnosis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.956
H-Index - 97
eISSN - 1097-0223
pISSN - 0197-3851
DOI - 10.1002/(sici)1097-0223(199706)17:6<545::aid-pd108>3.0.co;2-3
Subject(s) - abnormality , fetus , chromosomal abnormality , medicine , chromosome abnormality , prenatal diagnosis , gestation , obstetrics , population , prospective cohort study , gynecology , predictive value , chromosome , ultrasound , pregnancy , karyotype , biology , pathology , genetics , radiology , environmental health , psychiatry , gene
A prospective ultrasound study was performed between 18 and 38 weeks' gestation on 29 fetuses in a high‐risk population, defined by the presence of structural anomalies, in order to investigate the usefulness of fetal ear measurements in the prenatal prediction of chromosomal abnormality. The prevalence of abnormal chromosomes was 34 per cent. The sensitivity (SE), specificity (SC), positive predictive values (PPV), and negative predictive values (NPV) of ear length for the detection of chromosomal abnormality were 80, 84·2, 72·7 and 88·9 per cent. The SE, SC, PPV, and NPV of ear width were 40, 94·7, 80 and 75 per cent. Fetal ear measurements may be a useful adjunct to the various ultrasound parameters in the prenatal detection of chromosome abnormality in a high‐risk population of fetuses with structural anomaly(ies). © 1997 John Wiley & Sons, Ltd.