• Title/Summary/Keyword: 양수검사

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Analysis of Questions and Answers Posted on the Internet Blogs about Prenatal Genetic Diagnosis and Screening (블로그를 통해 본 산전 기형아 검사와 양수검사에 대한 질문과 댓글 분석)

  • Jun, Myunghee;Shin, Gyeyoung;Choi, Kyung Sook
    • The Journal of the Korea Contents Association
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    • v.15 no.3
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    • pp.252-264
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    • 2015
  • The purpose of this study was to identify pregnant women's needs for information on prenatal genetic diagnosis and screening. This study is consisted of two phases. In the first phase in December 2011, six blogs featuring questions and answers on prenatal genetic diagnosis and screening were selected from four major search engines in Korea by using the keywords "prenatal genetic diagnosis," "prenatal genetic screening", and "amniocentesis." An analyzing framework was constructed on the basis of 389 posts on six blogs between November 2006 and October 2011. In the second phase, the contents of the "MomsHolicbaby" blog posted from November 2010 to October 2011 were reviewed. Then, pregnant women's questions on prenatal genetic diagnosis and screening (100 questions) and amniocentesis (200 questions with 1,665 answers) were analyzed using descriptive statistics. Among posters who had ever been recommended to undergo amniocentesis, 56.5% described feelings of anxiety, 25.5% did not know the purpose of the test, and 33.9% refused to undergo the test. Among 295 posters answering questions about amniocentesis, 61.4% disagreed with undergoing the test. The results show that there is a need for healthcare professionals to provide more educational and emotional support to pregnant women considering prenatal genetic diagnosis and screening. Providing online health information can be integrated into prenatal genetic education for pregnant women as well as nurses. In addition, prenatal women's preferences about undergoing amniocentesis should be reflected in the current legal discussion on criteria for termination of pregnancy.

Ten-year Clinical Study of Chorionic Villus Sampling (융모막 융모생검 511례에 대한 임상적 연구: 10년(2000-2010년)간의 경험)

  • Kim, Soo-Hyun;Shim, Sung-Han;Baek, Jong-Woo;Cha, Dong-Hyun
    • Journal of Genetic Medicine
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    • v.8 no.1
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    • pp.35-43
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    • 2011
  • Purpose: We evaluated indications for chorionic villus sampling (CVS), the positive predictive value of CVS for fetal chromosomal abnormalities, and the fetal loss rate after CVS at CHA Medical Center. Materials and Methods: We reviewed the medical records of 511 cases of CVS performed between 67 and 120 days of gestation for prenatal cytogenetic diagnosis from April 2000 to April 2010. Fetal karyotypes were obtained by direct and indirect culture methods. Results: The most common indications for CVS were abnormal ultrasonic findings including increased nuchal translucency (294/635, 46.3%). The positive predictive value of abnormal karyotyping according to indication for CVS was highest in cases with abnormal parental karyotypes (14/21, 66.7%). Mosaicism revealed by CVS comprised 3.1% of the sample (16/509). Amniocentesis revealed two cases of true mosaicism and 11 cases of confined placental mosaicism. The fetal loss rate within 4 weeks of the procedure was 1.2% (6/511). Conclusion: If CVS is performed by an expert clinician, it is a feasible and reliable procedure for prenatal genetic diagnosis. When CVS indicates mosaicism, the finding should be confirmed by amniocentesis to distinguish true mosaicism from confined placental mosaicism.

Rapid prenatal diagnosis of chromosome aneuploidies in 943 uncultured amniotic fluid samples by fluorescence in situ hybridization (FISH)

  • Han, Sung-Hee;Kang, Jeom-Soon;An, Jeong-Wook;Lee, An-Na;Yang, Young-Ho;Lee, Kyu-Pum;Lee, Kyoung-Ryul
    • Journal of Genetic Medicine
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    • v.5 no.1
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    • pp.47-54
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    • 2008
  • Purpose : Fluorescence in situ hybridization (FISH) on uncultured amniotic fluid cells offers the opportunity for rapid screening of aneuploidies and has become an integral part of the current practice in many clinical cytogenetics laboratories. Here, we retrospectively analyzed the results of interphase FISH in 943 amniotic fluid samples and assessed the efficiency of FISH for rapid detection of aneuploidies. Methods : Interphase FISH for chromosome 13, 18, and 21 was performed in 943 consecutive amniotic fluid samples for rapid diagnosis of aneuploidies referred from 2004 to 2006. Karyotypes from standard cytogenetic analysis were compared to the FISH results. Results : A total of 45 chromosomal rearrangements (4.8%) were found after conventional cytogenetic analysis of the 943 amniotic fluid. After exclusion of known familiar chromosomal rearrangements and inversions (2.1%, 20/943), 2.7% (25/943) were found to have chromosomal abnormalities. Of this group, 0.7% (6/943) were chromosomal abnormalities not detectable by FISH and 2.0% (19/943) were numerical abnormalities detectable by FISH. All 14 cases of Down syndrome (Classic type, 13 cases; Robertsonian type, 1 case) and 5 cases of trisomy 18 were diagnosed and detected by FISH and there were no false-positive or -negative results (specificity and sensitivity=100%). Conclusion : The present study demonstrates that FISH can provide a rapid and sensitive clinical method for prenatal identification of chromosome aneuploidies. However, careful genetic counseling is essential to explain the limitations of FISH, including the inability to detect all chromosomal abnormalities and the possibilities of uninformative or false-negative results in some cases.

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