Abstract
To evaluate factors influencing parental decisions toward continuing or terminating a pregnancy with prenatal diagnosis of sex chromosome aneuploidy. We reviewed the records of patients with fetuses with sex chromosome aneuploidy between 1990 and 2001. A questionnaire survey of women who chose to terminate such pregnancies was designed to examine aspects of their decision-making process. Forty-nine of 89 pregnancies with sex chromosome aneuploidy were terminated (termination rate 0.55; 95% confidence interval 0.45-0.65). Pregnancies with abnormal ultrasound findings (14/16, 87%), with 45,X or 47,XXY karyotypes (26/36, 72%), and with nonmosaic karyotypes (30/48, 63%) were terminated significantly more often than pregnancies with normal ultrasound findings (35/73, 48%; P <.01), with 47,XXX or 47,XYY karyotypes (4/12, 33%; P <.05), and with mosaic karyotypes (5/25, 20%; P =.01). There was a trend (P =.136) toward a lower rate of termination from 67% to 36% across time, with a significant decrease from 67% to 7% in pregnancies with 47,XXX; 47,XYY; and mosaic karyotypes (P <.01), and no change in cases with 45,X and 47,XXY karyotypes (67% compared with 69%; P = 1.0). Abnormal sexual development and infertility were the greatest pare...Continue Reading
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