After amniocentesis and prenatal counseling, the couple chose to terminate the pregnancy.经羊膜穿刺术检查染色体正常。
Karyotyping for adanced maternal age was performed by amniocentesis and demonstrated a normal male karyotype (46 XY with对此高龄孕妇行羊膜穿刺染色体组型分型检查，先是正常男性（46XY，G带显带技术）。