PP161. PRENATAL KARYOTYPES OF FETUSES CONCEIVED BY ASSISTED REPRODUCTIVE TREATMENT A.-M. STEFANOVSKA, A. Anevska, M. Popovic, M. Ivanovski, S. Adamoska-Klisaroska, M. Vasilevska, S. Lazarevski
Special hospital for obstetrics and gynecology - “Mala Bogorodica-Sistina”, Skopje, Republic of Macedonia
e-mail: kliment@mt.net.mk
*Corresponding Author: page: 120
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Abstract
This study was designed as retrospective evaluation of prenatal karyotypes in fetuses conceived by assisted reproductive treatment (ART) in our hospital. During a 4-year period a total of 1466 ART cycles were recorded, performed by standard in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI) method, including TESE (testicular sperm extraction). Of the 1157 embryo transfers that were carried out, pregnancies were confirmed in 297 patients and 265 babies were born. Chorion villus sampling or amniocentesis and prenatal karyotyping were performed in 57 fetuses from 52 (18%) patients considered at high risk due to advanced maternal age and ultrasound anomalies. Abnormal karyotypes were detected in 6 fetuses, three of these from singleton and three from twin pregnancies. Cytogenetic analysis revealed the common aneuploidies: three cases with trisomy 21, and one case each with trisomy 18, trisomy 13, and double trisomy 18 and X. Advanced maternal age was indication for prenatal diagnosis in all cases, except for trisomy 13 found in a 33 years old patient in whom ultrasound anomaly was detected. Three of the fetuses with chromosomal abnormalities were conceived by IVF, 2 by ICSI and one was obtained after embryo transfer of IVF and ICSI embryos. Our findings on prenatal karyotypes of ART fetuses are in agreement with previously reported data, especially from limited groups of high-risk patients similar to our group. Compared to the general population, ART conceived babies carry increased risk of an abnormal karyotype.
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