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本文对遗传咨询门诊中２８例就诊患儿，患儿父母进行了染色体检查，并在再次妊娠时进行了产前诊断，对诊断结果、妊娠结局等进行了分析讨论。对象与方法一、对２８例夫妇及异常患儿（主征为智力低下、多发畸形和先天性心脏病等）均进行了常规显带核型分析，并在再次妊娠时进行
In this paper, 28 cases of pediatric patients and parents of children with genetic counseling were investigated with chromosomal tests and prenatal diagnosis during the second trimester of pregnancy. The diagnostic results and pregnancy outcomes were analyzed and discussed. Subjects and methods A, 28 cases of couples and children with abnormalities (the main sign of mental retardation, multiple deformities and congenital heart disease, etc.) were carried out conventional band karyotype analysis, and in the second pregnancy