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쌍태임신시 태반유형 및 제대부착형태가 성장 불일치에 미치는 영향에 관한 연구
안현경(H . K . Ahn),양광문(K . M . Yang),홍성란(S . R . Hong),류현미(H . M . Rheu),김문영(M . Y . Kim),한정열(J . R . Han),최규홍(K . H . Choi),양재혁(J . H . Yang),김은성(E . S . Kim) 대한산부인과학회 2001 Obstetrics & Gynecology Science Vol.44 No.11
Object : The purpose of the study is to determine whether the type of placentation and abnormal cord insertion can affect discordant growth in twin gestation. Materials and methods : We investigated 422 sets of structually normal twin delivered at our twin clinic after 26 weeks of gestation from 1995-1997. All cases of placenta were examined for pathologic evaluation during the study periods. The type of placentation was divided into four groups: monochorionic monoamniotic placenta (n=4); monochorionic diamniotic placenta (n=62); dichorionic diamniotic fused placenta (n=163); dichorionic diamniotic separate placenta(n=193). Cord insertion was also divided into three groups: both side abnormal insertion (n=17); either side abnormal insertion (n=101); both side normal insertion (n=304). Intertwin weight discordancy was classified as mild form (15-25%) and severe form (>25%) by the degree of the discrepancy. Results : The results were as follows; 1. Of these 422 twin sets, 132 (31%) consisted of twin discordancy in weight by 15% or greater (mild form 19%, severe form 12%). 2. There are no significant difference in the frequencies of discordancy between MC twins and DC twins (31.8% vs 31.2%, p=0.97). 3. The prevalence of abnormal cord insertion was 16% and much more frequent in MC placenta than DC placenta (26.5% vs 14%, p=0.001). 4. Although mean gestational age at delivery and mean birth weight were significantly lower in either side abnormal cord insertion group than both side normal cord insertion group (35.7 vs 36.7weeks, p=0.004 : 2317 vs 2475gm, p=0.01), no difference in the frequency of discordancy was observed in these two groups (37.6% vs 29%, p=0.1). Conclusion : The type of placentation and/or abnormal cord insertion were not revealed to affect discordant growth in twin gestation.
쌍태임신에서 태반유형 및 제대부착부위가 출생체중과 성장불일치에 미치는 영향
김금석 ( Kum Seok Kim ),한용보 ( Young Bo Han ),정연욱 ( Yoen Ug Jung ),권오준 ( Oh Joon Kweon ),김석영 ( Suk Young Kim ),이의돈 ( Eui Don Lee ) 대한산부인과학회 2002 Obstetrics & Gynecology Science Vol.45 No.12
Objective : To investigate the effect of the type of placenta and the portion of umbilical cord insertion on birthweight and growth discordancy in twin pregnancies. Methods : We selected 120 twins of 146 multiple pregnancies between March, 2000 and March,
성장불일치를 초래하는 쌍태아에서 태반의 난막성, 태반무게, 제대부착부위에 따른 도플러혈류의 변화
김석영 ( Kim Seog Yeong ),김광준 ( Kim Gwang Jun ),윤성준 ( Yun Seong Jun ),이순표 ( Lee Sun Pyo ),이지성 ( Lee Ji Seong ) 대한산부인과학회 2004 Obstetrics & Gynecology Science Vol.47 No.2
Objective : To evaluate hemodynamic change in growth discordant twins using a ratio of middle cerebral artery/umbilical artery resistance index and to assess the relationship between Doppler hemodynamic and the influence of placental chorionisity and umbilical cord insertion. Methods : 118 live born twin pairs whose birthweight discordance below or above 20% between March 2000 and March 2002 were included in our study. And we divided the two groups in which above 20% of growth discordance (GD) group was GD and below 20% of GD group was control. Chorionisity and umbilical cord insertion in all study subjects within 24 hours after delivery were investigated. And then we classified to monochorionic (MONO), and dichorionic (DI) placenta and the type of insertion of umbilical cord were also classified central, marginal and velamentous type. 56 of twin pairs were performed 153 Doppler flow velocimetry between smaller and larger fetus prenatally. Resistance index (RI) of middle cerebral artery and umbilical artery in each fetus were measured and standardized as a ratio of middle cerebral artery/umbilical artery (MCA/UmA). ANOVA, Mann-Whitney U test, and chi-square test, were performed and p<0.05 was considered as statistically significant. Results : Mean birthweight in monochorionic twins had lighter than those of dichorionic twins (p<0.01). The mean growth discordant ratios were 14.1% in monochorionic twin and 12.1% in dichorionic twins. In monochorionic twin, the smaller fetus in GD group showed lower value of MCA/UmA RI ratio than those of the larger fetus, significantly (1.09 vs. 1.28 p<0.05). And in monochorionic twins, the smaller fetus in GD group showed lower value of MCA/UmA RI ratio than the smaller fetus in control group, significantly (1.09 vs. 1.27 p<0.05). The placental weight in dichorionic twin was correlated the birthweight in infants in GD group, positively. Monochorionic twins in GD group had a significantly higher incidence of peripheral cord insertion than those of dichorionic twins in GD group (50.0% vs. 35.7% p<0.01). But dichorionic twins had a significantly higher incidence of central cord insertion than those of monochorionic twins in control group (69.2 vs. 57.4 p<0.05). Conclusion : The higher middle cerebral artery blood flows in smaller fetuses of monochorionic twins proved to be circulatory redistribution of the fetus in inadequate intrauterine condition. And these change of middle cerebral blood flow might be understood the part of mechanisms fetal growth and adaptation. Placental weight, number and umbilical cord insertion were also important factors which affected to develop the growth discordance of twin pregnancy.
Rh혈형부적합으로 인하여 고빌리루빈 혈치를 동반한 쌍태아 및 막상제대부착태반
이원기(WK Lee),송용덕(YD Song),김선원(SO Gim),박양실(YS Park) 대한산부인과학회 1967 Obstetrics & Gynecology Science Vol.10 No.7
A case of twin combined with hyperbilirubinenia due to Rh in compatibility, and velamentous insertion of cord are presented. The sex and the weight of these babies were as follows; 2.5kg (female), 2.9kg(male). These two babies were relatively well ellapsed without exchange transfusion during admission although the biliubin levels were high, and discharged uneventfully.