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Korean Journal of Obstetrics & Gynecology 2004;47(3):495-501.
Published online March 1, 2004.
Prenatal Diagnosis of Congenital Rubella Using Percutaneous Umbilical Blood Sampling in Pregnant Women with Rubella Infection.
Myoung Seon Kang, Tae Bok Song, Yoon Ha Kim, Young Youn Choi, Dae Seog Yun
1Department of Obstetrics and Gynecology, Chonnam National University Medical School, Gwangju, Korea
2Department of Pediatrics, Chonnam National University Medical School and Chonnam National University, Research Institute of Medical Sciences, Gwangju, Korea
3Department of Obstetrics and Gynecology, St. Carollo Hospital, Sunchon, Korea.
Abstract
OBJECTIVE
To evaluate the usefulness of percutaneous umbilical blood sampling (PUBS) and prevalence of fetal infection in the pregnant women with suspicious fetal rubella infection. METHODS: Between June 1996 and May 2002 in Chonnam National University Hospital, the rubella specific IgG, IgM antibody and RT-PCR were checked in fetal blood obtained from 31 pregnant women with high risk of rubella infection. Eighteen women (58.1%) had rubella specific IgM, 11 women (35.5%) high titer of rubella specific IgG, and 2 women had a history of recent rubella vaccination within 3 months. RESULTS: PUBS was performed in all cases, successful in 27 cases (87.1%) and failed in 4 cases (12.9%). Cardiocentesis was performed in failed cases. Performing the PUBS, fetal bradycardia was observed in 7 cases (25.9%), fetal tachycardia in 1 case (14.8%), and preterm labor in 2 cases (7.4%). Performing cardiocentesis, fetal bradycardia was observed in 1 case (25.0%), fetal tachycardia in 2 cases (50.0%), and preterm labor in 1 case (25.0%). There was no fetal death. All samples of fetal blood were positive for rubella specific IgG but rubella specific IgM was detected in only 1 case. RT-PCR was negative in all cases. CONCLUSION: Fetal blood sampling is relatively safe and a great precaution is necessary before termination of pregnancy with suspicious fetal rubella infection and without typical maternal rash to reduce unnecessary termination of pregnancy. Several tests such as rubella specific IgM and PCR from placental villi, amniotic fluid, and fetal blood should be considered before termination of pregnancy.
Key Words: Congenital rubella, PUBS, Cordocentesis, Antenatal diagnosis


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