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Hamer J, Eltaweel N, Man R, Rogerson M, Hodgetts Morton V, Morris RK, Marton T, Gurney L. Placental architectural characteristics following laser ablation within monochorionic twins complicated by twin-twin transfusion syndrome: A systematic review and meta-analysis of outcomes. Acta Obstet Gynecol Scand 2024. [PMID: 38873725 DOI: 10.1111/aogs.14891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 05/27/2024] [Accepted: 05/28/2024] [Indexed: 06/15/2024]
Abstract
INTRODUCTION Twin-twin transfusion syndrome (TTTS) complicates approximately 10%-15% of all monochorionic twin pregnancies. The aim of this review was to evaluate the placental architectural characteristics within TTTS twins following laser and elucidate their impact on fetal outcomes and operative success. MATERIAL AND METHODS Five databases were searched from inception to August 2023. Studies detailing post-delivery placental analysis within TTTS twins post-laser were included. Studies were categorized into two main groups: (1) residual anastomoses following laser and (2) abnormal cord insertion: either velamentous and/or marginal or proximate. The primary outcome was to determine the proportion of TTTS placentas with residual anastomoses and abnormal cord insertions post-laser. Secondary outcomes included assessing residual anastomoses on post-laser fetal outcomes and assessing the relationship between abnormal cord insertion and TTTS development. Study bias was critiqued using the Joanna Briggs Institute checklists and Cochrane risk of bias tool. Random-effects meta-analysis was used, and results were reported as pooled proportions or odds ratio (OR) with 95% confidence interval (CI). PROSPERO registration: CRD42023476875. RESULTS Twenty-six studies, comprising 4013 monochorionic twins, were included for analysis. The proportion of TTTS placentas with residual anastomoses following laser was 24% (95% CI, 0.12-0.41), with a mean and standard deviation of 4.03 ± 2.95 anastomoses per placenta. Post-laser residual anastomoses were significantly associated with intrauterine fetal death (OR, 2.38 [95% CI, 1.33-4.26]), neonatal death (OR, 3.37 [95% CI, 1.65-6.88]), recurrent TTTS (OR, 24.33 [95% CI, 6.64-89.12]), and twin anemia polycythemia sequence (OR, 13.54 [95% CI, 6.36-28.85]). Combined abnormal cord (velamentous and marginal), velamentous cord, and marginal cord insertions within one or both twins following laser were reported at rates of 49% (95% CI, 0.39-0.59), 27% (95% CI, 0.18-0.38), and 28% (95% CI, 0.21-0.36), respectively. Combined, velamentous and marginal cord insertions were not significantly associated with TTTS twins requiring laser (p = 0.72, p = 0.38, and p = 0.71, respectively) versus non-TTTS monochorionic twins. CONCLUSIONS To the best of our knowledge, this is the first review to conjointly explore outcomes of residual anastomoses and abnormal cord insertions within TTTS twins following laser. A large prospective study is necessitated to assess the relationship between abnormal cord insertion and residual anastomoses development post-laser.
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Affiliation(s)
- Jack Hamer
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
- Birmingham Women's and Children's NHS Foundation Trust, Birmingham, UK
| | - Nashwa Eltaweel
- University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK
| | - Rebecca Man
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
- Birmingham Women's and Children's NHS Foundation Trust, Birmingham, UK
| | - Matilde Rogerson
- Birmingham Women's and Children's NHS Foundation Trust, Birmingham, UK
| | - Victoria Hodgetts Morton
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
- Birmingham Women's and Children's NHS Foundation Trust, Birmingham, UK
| | - R Katie Morris
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
- Birmingham Women's and Children's NHS Foundation Trust, Birmingham, UK
| | - Tamas Marton
- Birmingham Women's and Children's NHS Foundation Trust, Birmingham, UK
- Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Leo Gurney
- Birmingham Women's and Children's NHS Foundation Trust, Birmingham, UK
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Lin J, Zhang K, Wu F, Wang B, Chai W, Zhu Q, Huang J, Lin J. Maternal and perinatal risks for monozygotic twins conceived following frozen-thawed embryo transfer: a retrospective cohort study. J Ovarian Res 2024; 17:36. [PMID: 38326864 PMCID: PMC10848471 DOI: 10.1186/s13048-024-01349-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 01/11/2024] [Indexed: 02/09/2024] Open
Abstract
BACKGROUND The present study aimed to explore the maternal and perinatal risks in cases of monozygotic twins (MZT) following frozen-thawed embryo transfer (FET). METHODS All twin births that were conceived following FET from 2007 to 2021 at Shanghai Ninth People's Hospital in Shanghai, China were retrospectively reviewed. The exposure variable was twin type (monozygotic and dizygotic). The primary outcome was the incidence of neonatal death while secondary outcomes included hypertensive disorders of pregnancy, gestational diabetes, intrahepatic cholestasis of pregnancy, placenta previa, placental abruption, preterm premature rupture of the membranes, Cesarean delivery, gestational age, birth weight, weight discordance, stillbirth, birth defects, pneumonia, respiratory distress syndrome, necrotizing enterocolitis, and neonatal jaundice. Analysis of the outcomes was performed using logistic regression models to estimate odds ratios (ORs) and 95% confidence intervals (CIs). The causal mediation analysis was conducted. A doubly robust estimation model was used to validate the results. Kaplan-Meier method was used to calculate survival probability. The sensitivity analysis was performed with a propensity score-based patient-matching model. RESULTS Of 6101 dizygotic twin (DZT) and 164 MZT births conceived by FET, MZT showed an increased risk of neonatal death based on the multivariate logistic regression models (partially adjusted OR: 4.19; 95% CI, 1.23-10.8; fully adjusted OR: 4.95; 95% CI, 1.41-13.2). Similar results were obtained with the doubly robust estimation. Comparing MZT with DZT, the neonatal survival probability was lower for MZT (P < 0.05). The results were robust in the sensitivity analysis. Females with MZT pregnancies exhibited an elevated risk of preterm premature rupture of the membranes (adjusted OR: 2.42; 95% CI, 1.54-3.70). MZT were also associated with higher odds of preterm birth (prior to 37 weeks) (adjusted OR: 2.31; 95% CI, 1.48-3.67), low birth weight (adjusted OR: 1.92; 95% CI, 1.27-2.93), and small for gestational age (adjusted OR: 2.18; 95% CI, 1.21-3.69) in the fully adjusted analyses. The effect of MZT on neonatal death was partially mediated by preterm birth and low birth weight (P < 0.05). CONCLUSIONS This study indicates that MZT conceived by FET are related to an increased risk of neonatal death, emphasizing a potential need for comprehensive antenatal surveillance in these at-risk pregnancies.
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Affiliation(s)
- Jing Lin
- Center for Reproductive Medicine, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China
| | - Kai Zhang
- Department of Hepatobiliary Surgery, National Clinical Research Center for Cancer / Cancer Hospital, National Cancer Center, Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College (PUMC), Beijing, 100021, China
| | - Fenglu Wu
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Zhizaoju Road No. 639, Shanghai, 200011, China
| | - Bian Wang
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Zhizaoju Road No. 639, Shanghai, 200011, China
| | - Weiran Chai
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Zhizaoju Road No. 639, Shanghai, 200011, China
| | - Qianqian Zhu
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Zhizaoju Road No. 639, Shanghai, 200011, China
| | - Jialyu Huang
- Center for Reproductive Medicine, Jiangxi Maternal and Child Health Hospital, Nanchang University School of Medicine, 318 Bayi Avenue, Nanchang, 330006, China.
| | - Jiaying Lin
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Zhizaoju Road No. 639, Shanghai, 200011, China.
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Paiva TM, Santana EF, Casati MF, Araujo Júnior E. Neurological morbidity in monochorionic twins with selective fetal growth restriction. Minerva Obstet Gynecol 2023; 75:565-572. [PMID: 35758094 DOI: 10.23736/s2724-606x.22.05068-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The increased risks of various obstetric, maternal and fetal comorbidities of monochorionic twin pregnancies are widely known. However, despite its high prevalence and significance, the assessment of neurological morbidity as more commonly in selective fetal growth restriction (sFGR) is concerned with more health care. This literature review aims to provide more information about such an assessment. To this end, retrospective cases of sFGR were studied in monochorionic twins, already diagnosed, classified and who had the recommended management, published between 2001 and 2018 in 17 scientific articles. In the assessment of fetal mortality, the highest risk of death of the restricted fetus was found in type 3 of sFGR, while type 2 sFGR was responsible for the highest death rates of both fetuses and also the lowest mean gestational age at delivery, 30.9 weeks. Regarding neurological morbidity, however, studies have shown a higher risk of brain damage in the habitually growing twin compared to the restricted one in the case of sFGR. This may be due to prematurity or intermittent diastolic flow on Doppler in type 2 and 3 of sFGR, however, statements about its pathophysiology still lack further studies.
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Affiliation(s)
| | - Eduardo F Santana
- Albert Einstein Medical School, São Paulo, Brazil
- Unit of Fetal Medicine, Albert Einstein Hospital, São Paulo, Brazil
| | - Murilo F Casati
- Department of Obstetrics and Gynecology, ABC Medical School (FMABC), Santo André, Brazil
| | - Edward Araujo Júnior
- Department of Obstetrics, Paulista School of Medicine, Federal University of São Paulo (EPM-UNIFESP), São Paulo, Brazil -
- Municipal University of São Caetano do Sul (USCS), Bela Vista Campus, São Paulo, Brazil
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Løppke FB, Schou KV, Ekelund CK, Rode L, Tabor A, Sundberg K. First-trimester biomarkers and ultrasound biometries in relation to growth discordance in monochorionic diamniotic twins. J Matern Fetal Neonatal Med 2023; 36:2184223. [PMID: 36889742 DOI: 10.1080/14767058.2023.2184223] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2023]
Abstract
Objective: The aim of this study was to investigate the association and predictive value between intertwin discordance in first trimester biometries crown-rump length (CRL) and nuchal translucency (NT), and the first trimester biochemical markers PAPP-A and free β-hCG in relation to birth weight discordance (BWD) ≥25% in monochorionic diamniotic (MCDA) twin pregnancies.Methods: First trimester screening information and pregnancy outcome data on MCDA twin pregnancies with delivery from July 2008 to July 2017 were retrieved from the Danish Fetal Medicine Database. CRL discordance was divided into: <10% (reference group) and ≥10%. NT discordance was divided into: <20% (reference group) and ≥20%. The twin pregnancies were classified according to BWD into the following groups: <10% (reference group), 10-24.9%, and ≥25% including cases undergoing umbilical cord occlusion due to selective fetal growth restriction (sFGR). The twin pregnancies with the most severe BWD (BWD ≥25%) were subdivided into three groups including cases with only one growth-restricted (<10th centile) infant defined as sFGR, and cases where both twins were <10th centile. Median multiples of the median (MoM) values of PAPP-A and free ß-hCG were compared with the group with BWD <10% using the Wilcoxon two-sample test. The ability of CRL discordance and NT discordance to predict BWD ≥25% was examined by the area under the receiver operator characteristic (ROC) curve.Results: A total of 762 MCDA pregnancies were included. The proportion of pregnancies with CRL discordance ≥10% and NT discordance ≥20% was significantly higher in the group with severe BWD discordance (27.0% vs. 4.7% (p < 0.001) and 40.9% vs. 23.9% (p = 0.001), respectively). When examining the three subgroups of severe BWD, we found a significantly higher percentage of pregnancies with CRL discordance ≥10% in the group where umbilical cord occlusion was performed (52.6% vs. 4.7% in the group with BWD <10% (p < 0.001)) and in the group of BWD ≥25% with sFGR (21.7% vs. 4.7% (p < 0.001)). Additionally, a significantly higher percentage of pregnancies with NT discordance ≥20% was found in the group where umbilical cord occlusion was performed (52.6% vs. 23.9% (p = 0.005)) and in the group with both twins <10th centile (66.7% vs. 23.9% (p = 0.003)). No statistically significant differences were found when comparing levels of PAPP-A and free β-hCG MoMs with the group with BWD <10%. In ROC curves, CRL discordance yielded an AUC for prediction of BWD ≥25% of 0.70 (95% CI 0.63-0.76), and for NT discordance AUC was 0.59 (95% CI 0.52-0.66)). OR for any BWD ≥ 25% was 6.7 (95% CI 3.8-12.0) for pregnancies with a CRL discordance ≥10% compared to pregnancies with a CRL discordance <10%.Conclusions: This study shows that a discordance in CRL and NT in MCDA twins are both significantly associated with development of BWD. The most important predictor remains CRL discordance ≥10%, thereby suggesting the unequal growth pattern in many cases with BWD is evident already in the first trimester of the pregnancy. No association was found between first trimester biochemical markers and severe BWD.
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Affiliation(s)
- Frederikke Bang Løppke
- Department of Obstetrics, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark.,Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Katrine Vasehus Schou
- Department of Obstetrics, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
| | - Charlotte Kvist Ekelund
- Department of Obstetrics, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark.,Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Line Rode
- Department of Clinical Biochemistry, Copenhagen University Hospital Rigshospitalet, Glostrup, Denmark
| | - Ann Tabor
- Department of Obstetrics, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark.,Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Karin Sundberg
- Department of Obstetrics, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
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Meng XL, Yuan PB, Wang XJ, Hang J, Shi XM, Zhao YY, Wei Y. The Proteome Landscape of Human Placentas for Monochorionic Twins with Selective Intrauterine Growth Restriction. GENOMICS, PROTEOMICS & BIOINFORMATICS 2023; 21:1246-1259. [PMID: 37121272 PMCID: PMC11082409 DOI: 10.1016/j.gpb.2023.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 02/20/2023] [Accepted: 03/09/2023] [Indexed: 05/02/2023]
Abstract
In perinatal medicine, intrauterine growth restriction (IUGR) is one of the greatest challenges. The etiology of IUGR is multifactorial, but most cases are thought to arise from placental insufficiency. However, identifying the placental cause of IUGR can be difficult due to numerous confounding factors. Selective IUGR (sIUGR) would be a good model to investigate how impaired placentation affects fetal development, as the growth discordance between monochorionic twins cannot be explained by confounding genetic or maternal factors. Herein, we constructed and analyzed the placental proteomic profiles of IUGR twins and normal cotwins. Specifically, we identified a total of 5481 proteins, of which 233 were differentially expressed (57 up-regulated and 176 down-regulated) in IUGR twins. Bioinformatics analysis indicates that these differentially expressed proteins (DEPs) are mainly associated with cardiovascular system development and function, organismal survival, and organismal development. Notably, 34 DEPs are significantly enriched in angiogenesis, and diminished placental angiogenesis in IUGR twins has been further elaborately confirmed. Moreover, we found decreased expression of metadherin (MTDH) in the placentas of IUGR twins and demonstrated that MTDH contributes to placental angiogenesis and fetal growth in vitro. Collectively, our findings reveal the comprehensive proteomic signatures of placentas for sIUGR twins, and the DEPs identified may provide in-depth insights into the pathogenesis of placental dysfunction and subsequent impaired fetal growth.
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Affiliation(s)
- Xin-Lu Meng
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - Peng-Bo Yuan
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - Xue-Ju Wang
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - Jing Hang
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China; Key Laboratory of Assisted Reproduction, Ministry of Education, Beijing 100191, China; Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproduction, Beijing 100191, China; National Clinical Research Center for Obstetrics and Gynecology, Beijing 100191, China
| | - Xiao-Ming Shi
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - Yang-Yu Zhao
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China.
| | - Yuan Wei
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China.
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Lin Z, Wang X, Li L, Yuan P, Zhao Y, Wei Y. A study on the correlation of placental anastomosis and superficial vascular branches of selective fetal growth restriction in monochorionic diamniotic twins. BMC Pregnancy Childbirth 2023; 23:827. [PMID: 38037010 PMCID: PMC10691090 DOI: 10.1186/s12884-023-06157-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Accepted: 11/24/2023] [Indexed: 12/02/2023] Open
Abstract
INTRODUCTION The main purpose of the present study was to investigate the correlation between placental anastomosis and superficial vascular branches in selective fetal growth restriction (sFGR) in monochorionic diamniotic twins. MATERIALS AND METHODS This was a retrospective analysis of the pregnancy data and placental perfusion of 395 patients with monochorionic diamniotic (MCDA) twin pregnancies delivered at our hospital from April 2013 to April 2020. We divided the patients into two groups and compared the number of placental superficial vascular branches in sFGR twins and normal MCDA twins. The correlation between the placental anastomosis and the number of superficial vascular branches in sFGR and normal MCDA twins was also investigated. RESULTS The number of umbilical arterial branches and umbilical venous branches was less than larger twins in sFGR, larger twins in normal MCDA and smaller twins in normal MCDA. (11.83 [4-44], 21.82 [7-50], 19.72 [3-38], 14.85 [0-31], p < 0.001, 6.08 [1-18], 9.60 [3-22], 9.96 [2-22], 8.38 [1-20], p < 0.00) For smaller twins in the sFGR group, the number of umbilical venous branches was positively associated with AA anastomosis overall diameter, AV anastomosis overall diameter and all anastomosis overall diameter. (r = 0.194, 0.182 and 0.211, p < 0.05) CONCLUSIONS: The risk of sFGR may arise when the placenta from MCDA twins shows a poor branching condition of placental superficial vessels. For the smaller twin of sFGR, regular ultrasound examination of the number of the umbilical venous branches may help to predict artery-to-artery (AA) overall diameter, artery-to-vein (AV) overall diameter and all anastomosis overall diameter.
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Affiliation(s)
- Zhiman Lin
- Department of Obstetrics and Gynecology, Peking University Third Hospital, No.49 Hua Yuan North Road, Hai Dian District, Beijing, 100191, China
| | - Xueju Wang
- Department of Obstetrics and Gynecology, Peking University Third Hospital, No.49 Hua Yuan North Road, Hai Dian District, Beijing, 100191, China.
| | - Luyao Li
- Department of Obstetrics and Gynecology, Peking University Third Hospital, No.49 Hua Yuan North Road, Hai Dian District, Beijing, 100191, China
| | - Pengbo Yuan
- Department of Obstetrics and Gynecology, Peking University Third Hospital, No.49 Hua Yuan North Road, Hai Dian District, Beijing, 100191, China
| | - Yangyu Zhao
- Department of Obstetrics and Gynecology, Peking University Third Hospital, No.49 Hua Yuan North Road, Hai Dian District, Beijing, 100191, China
| | - Yuan Wei
- Department of Obstetrics and Gynecology, Peking University Third Hospital, No.49 Hua Yuan North Road, Hai Dian District, Beijing, 100191, China
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Kim SY, Won HS, Lee MY, Chung JH, Park JH, Kim YK, Lee HM. Fetal growth changes and prediction of selective fetal growth restriction following fetoscopic laser coagulation in twin-to-twin transfusion syndrome. Obstet Gynecol Sci 2023; 66:529-536. [PMID: 37828841 PMCID: PMC10663392 DOI: 10.5468/ogs.23108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 06/27/2023] [Accepted: 08/16/2023] [Indexed: 10/14/2023] Open
Abstract
OBJECTIVE To investigate fetal growth changes and predictive factors for selective fetal growth restriction (sFGR) in patients with twin-to-twin transfusion syndrome (TTTS) after fetoscopic laser coagulation (FLC). METHODS This retrospective study included twin-pregnant women with fetal TTTS who underwent FLC at our institution between 2011 and 2020. Twin pairs who survived at least 28 days after FLC and at least 28 days after birth were included. A paired t-test was used to compare the mean discordance between the estimated fetal weights at the FLC and the birth weights. The predictive factors for sFGR after FLC were evaluated using univariate and multivariate logistic regression analyses. RESULTS A total of 119 eligible pairs of patients who underwent FLC were analyzed. The weight percentile at birth significantly decreased after FLC in the recipients (53.7±30.4 percentile vs. 43.7±28.0 percentile; P<0.001), but increased in the donors (11.5±17.1 percentile vs. 20.7±22.8 percentile; P<0.001). Additionally, the mean weight discordance of twin pairs significantly decreased after FLC (23.9%±12.7% vs. 17.3%±15.7%; P<0.001). After FLC, Quintero stage ≥3, pre-FLC sFGR, abnormal cord insertion, and post-FLC abnormal umbilical artery Doppler (UAD) were all significantly higher in the sFGR group than the non-sFGR group. The prediction model using these variables indicated that the area under the receiver operating characteristic curve was 0.898. CONCLUSION The recipient weight percentile decreased, whereas donor growth increased, resulting in reduced weight discordance after FLC. The Quintero stage, pre-FLC sFGR, and post-FLC abnormal UAD were useful predictors of sFGR after FLC in TTTS.
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Affiliation(s)
- So Yeon Kim
- Department of Obstetrics and Gynecology, University of Ulsan College of Medicine, Asan Medical Center, Seoul,
Korea
| | - Hye-Sung Won
- Department of Obstetrics and Gynecology, University of Ulsan College of Medicine, Asan Medical Center, Seoul,
Korea
| | - Mi-Young Lee
- Department of Obstetrics and Gynecology, University of Ulsan College of Medicine, Asan Medical Center, Seoul,
Korea
| | - Jin Hoon Chung
- Department of Obstetrics and Gynecology, University of Ulsan College of Medicine, Asan Medical Center, Seoul,
Korea
| | - Jin-Hee Park
- Department of Obstetrics and Gynecology, Asan Medical Center, Seoul,
Korea
| | - You-Kyoung Kim
- Department of Obstetrics and Gynecology, Asan Medical Center, Seoul,
Korea
| | - Hwang-Mi Lee
- Department of Obstetrics and Gynecology, Asan Medical Center, Seoul,
Korea
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8
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Wen L, Zhong Q, Mei L, Gao L, Lan X, Xiong J, Luo S, Wang L. Associations between velamentous or marginal cord insertion and risk of adverse perinatal outcomes in twin pregnancies: a retrospective cohort study. BMC Pregnancy Childbirth 2023; 23:648. [PMID: 37684596 PMCID: PMC10486129 DOI: 10.1186/s12884-023-05963-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 08/29/2023] [Indexed: 09/10/2023] Open
Abstract
BACKGROUND Velamentous cord insertion (VCI) and marginal cord insertion (MCI) are well-known risk factors for adverse perinatal outcomes in singleton pregnancies. However, the potential links between VCI or MCI and perinatal outcomes in twin pregnancies have yet to be systematically evaluated. This study aimed to investigate the relationships between VCI or MCI and perinatal outcomes in twin pregnancies. METHODS This retrospective single-center cohort study included women with twin pregnancies who gave birth in a tertiary hospital in Southwest, China between January 2017 and December 2022. VCI and MCI were identified by abdominal ultrasound and confirmed after placental delivery. Logistic regression, multinomial logit regression and generalized estimation equation models were used to evaluate the association between VCI or MCI and perinatal outcomes. RESULTS A total of 3682 twin pregnancies were included, including 100 (2.7%) pregnancies with VCI and 149 (4.0%) pregnancies with MCI. Compared to pregnancies with normal cord insertion, both monochorionic and dichorionic pregnancies with VCI were associated with an increased risk of preterm delivery 32-34 weeks (aRRR 2.94, 95% CI 1.03-8.39; aRRR 2.55, 95% CI 1.19-5.46, respectively), while pregnancies with MCI were not associated with preterm delivery. VCI was associated with a higher incidence of placental previa (aOR 6.36, 95% CI 1.92-21.04) in monochorionic pregnancies and placental accreta (aOR 1.85, 95% CI 1.06-3.23) in dichorionic pregnancies. MCI was associated with an increased risk of preeclampsia (aOR 3.07, 95% CI 1.49-6.32), intertwin birthweight discordance ≥ 20% (aOR 2.40, 95% CI 1.08-5.60) and selective fetal growth restriction (aOR 2.46, 95% CI 1.08-5.60) in monochorionic pregnancies and small-for-gestational age neonates (aOR 1.97, 95% CI 1.24-3.14) in dichorionic pregnancies. CONCLUSIONS VCI was associated with an increased risk of preterm delivery in twin pregnancies irrespective of chorionicity, whereas MCI was associated with an increased preeclampsia risk, significant intertwin birthweight discordance in monochorionic pregnancies and small-for-gestational age neonates in dichorionic pregnancies.
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Affiliation(s)
- Li Wen
- Department of Obstetrics and Gynecology, Women and Children's Hospital of Chongqing Medical University, Chongqing, 401147, China
- Department of Obstetrics and Gynecology, Chongqing Health Center for Women and Children, Chongqing, 401147, China
| | - Qimei Zhong
- Department of Obstetrics and Gynecology, Women and Children's Hospital of Chongqing Medical University, Chongqing, 401147, China
- Department of Obstetrics and Gynecology, Chongqing Health Center for Women and Children, Chongqing, 401147, China
| | - Lingwei Mei
- Department of Obstetrics and Gynecology, Women and Children's Hospital of Chongqing Medical University, Chongqing, 401147, China
- Department of Obstetrics and Gynecology, Chongqing Health Center for Women and Children, Chongqing, 401147, China
| | - Li Gao
- Department of Obstetrics and Gynecology, Women and Children's Hospital of Chongqing Medical University, Chongqing, 401147, China
- Department of Obstetrics and Gynecology, Chongqing Health Center for Women and Children, Chongqing, 401147, China
| | - Xia Lan
- Department of Obstetrics and Gynecology, Women and Children's Hospital of Chongqing Medical University, Chongqing, 401147, China
- Department of Obstetrics and Gynecology, Chongqing Health Center for Women and Children, Chongqing, 401147, China
| | - Jing Xiong
- Department of Obstetrics and Gynecology, Women and Children's Hospital of Chongqing Medical University, Chongqing, 401147, China
- Department of Obstetrics and Gynecology, Chongqing Health Center for Women and Children, Chongqing, 401147, China
| | - Shujuan Luo
- Department of Obstetrics and Gynecology, Women and Children's Hospital of Chongqing Medical University, Chongqing, 401147, China
- Department of Obstetrics and Gynecology, Chongqing Health Center for Women and Children, Chongqing, 401147, China
| | - Lan Wang
- Department of Obstetrics and Gynecology, Women and Children's Hospital of Chongqing Medical University, Chongqing, 401147, China.
- Department of Obstetrics and Gynecology, Chongqing Health Center for Women and Children, Chongqing, 401147, China.
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Current Evidence on Vasa Previa without Velamentous Cord Insertion or Placental Morphological Anomalies (Type III Vasa Previa): Systematic Review and Meta-Analysis. Biomedicines 2023; 11:biomedicines11010152. [PMID: 36672661 PMCID: PMC9856204 DOI: 10.3390/biomedicines11010152] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/03/2023] [Accepted: 01/04/2023] [Indexed: 01/11/2023] Open
Abstract
Vasa previa carries a high risk of severe fetal morbidity and mortality due to fetal hemorrhage caused by damage to unprotected fetal cord vessels upon membrane rupture. Vasa previa is generally classified into types I and II. However, some cases are difficult to classify, and some studies have proposed a type III classification. This study aimed to review the current evidence on type III vasa previa. A systematic literature search was conducted, and 11 articles (2011-2022) were included. A systematic review showed that type III vasa previa accounts for 5.7% of vasa previa cases. Thirteen women with type III vasa previa were examined at a patient-level analysis. The median age was 35 (interquartile range [IQR] 31.5-38) years, and approximately 45% were assisted reproductive technology (ART) pregnancies. The median gestational week of delivery was 36 (IQR 34-37) weeks; the antenatal detection rate was 84.6%, and no cases reported neonatal death. The characteristics and obstetric outcomes (rate of ART, antenatal diagnosis, emergent cesarean delivery, gestational age at delivery, and neonatal mortality) were compared between types I and III vasa previa, and all outcomes of interest were similar. The current evidence on type III vasa previa is scanty, and further studies are warranted.
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Pradhan P. Twin gestation with abnormal placental cord insertion associated with poor outcome. MGM JOURNAL OF MEDICAL SCIENCES 2023. [DOI: 10.4103/mgmj.mgmj_200_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023] Open
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11
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Gu Y, Yu C, Zhang L, Weng Y, Zhou F, Yu Q, Zhang H. Abnormal umbilical cord insertion and birth weight discordancy in monochorionic diamniotic twins: A retrospective study. Medicine (Baltimore) 2022; 101:e32316. [PMID: 36550827 PMCID: PMC9771205 DOI: 10.1097/md.0000000000032316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
To investigate the relationship between abnormal umbilical cord insertion and birthweight discordance in monochorionic diamnionic (MCDA) twins. A total of 137 pairs of MCDAs were retrospectively analyzed who delivered and survived in Hangzhou Women's Hospital from January 2016 to December 2021. According to different insertion methods, they were divided into normal cord insertion group (n = 57), marginal cord insertion (MCI) group (n = 34) and velamentous cord insertion (VCI) group (n = 46). The correlation was analyzed between different insertion methods of umbilical cord and the discordant birth weight of MCDAs. The gestational age of delivery with velamentous cord insertion was significantly earlier than those with normal and marginal insertion (P < .05). There were significant differences in birthweight between large fetus (F1) and small fetus (F2) with different umbilical insertion methods (P < .05). The birthweight of F1 and F2 in normal insertion group was significantly higher than those in MCI and VCI group (P < .05). Logistic regression analysis showed that VCI was significantly associated with birth weight in F1/F2, birthweight discordance ≥ 20%, and birthweight discordance ≥ 25%, however MCI and VCI were not an independent factor for discordance in birthweight of MCDAs (P > .05). Umbilical cord insertion method can lead to inconsistency in birthweight of MCDA twins, however they were not an independent factor for discordance in birthweight.
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Affiliation(s)
- Yunxia Gu
- Department of Ultrasound, Hangzhou Women’s Hospital, Hangzhou, Zhejiang, China
| | - Cheng Yu
- Department of Ultrasound, Hangzhou Women’s Hospital, Hangzhou, Zhejiang, China
| | - Lidan Zhang
- Department of Ultrasound, Hangzhou Women’s Hospital, Hangzhou, Zhejiang, China
| | - Yinan Weng
- Department of Ultrasound, Hangzhou Women’s Hospital, Hangzhou, Zhejiang, China
| | - Fangfang Zhou
- Department of Ultrasound, Hangzhou Women’s Hospital, Hangzhou, Zhejiang, China
| | - Qing Yu
- Department of Obstetrics, Hangzhou Women’s Hospital, Hangzhou, Zhejiang, China
| | - Hongyan Zhang
- Department of Reproductive Medicine Center, Hangzhou Women’s Hospital, Hangzhou, Zhejiang, China
- * Correspondence: Hongyan Zhang, Department of Reproductive Medicine Center, Hangzhou Women’s Hospital, Hangzhou, Zhejiang 310008, China (e-mail: )
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Matsuzaki S, Ueda Y, Matsuzaki S, Kakuda M, Lee M, Takemoto Y, Hayashida H, Maeda M, Kakubari R, Hisa T, Mabuchi S, Kamiura S. The Characteristics and Obstetric Outcomes of Type II Vasa Previa: Systematic Review and Meta-Analysis. Biomedicines 2022; 10:biomedicines10123263. [PMID: 36552018 PMCID: PMC9776262 DOI: 10.3390/biomedicines10123263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 12/11/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022] Open
Abstract
Vasa previa is a rare fetal life-threatening obstetric disease classified into types I and II. This study aimed to examine the characteristics and obstetric outcomes of type II vasa previa. A systematic review was performed, and 20 studies (1998-2022) were identified. The results from six studies showed that type II vasa previa accounted for 21.3% of vasa previa cases. The characteristics and obstetric outcomes (rate of assisted reproductive technology (ART), antenatal diagnosis, emergent cesarean delivery, maternal transfusion, gestational age at delivery, and neonatal mortality) were compared between type I and II vasa previa, and all outcomes of interest were similar. The association between ART and abnormal placenta (bilobed placenta or succenturiate lobe) was examined in three studies, and the results were as follows: (i) increased rate of succenturiate lobes (ART versus non-ART pregnancy; OR (odds ratio) 6.97, 95% confidence interval (CI) 2.45-19.78); (ii) similar rate of abnormal placenta (cleavage-stage versus blastocyst embryo transfer); (iii) increased rate of abnormal placenta (frozen versus fresh embryo transfer; OR 2.97, 95%CI 1.10-7.96). Although the outcomes of type II vasa previa appear to be similar to those of type I vasa previa, the current evidence is insufficient for a robust conclusion.
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Affiliation(s)
- Shinya Matsuzaki
- Department of Gynecology, Osaka International Cancer Institute, Osaka 541-8567, Japan
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Osaka 565-0871, Japan
- Correspondence: (S.M.); (Y.U.); Tel.: +81-6-6945-1181 (S.M.); +81-6-6879-3355 (Y.U.)
| | - Yutaka Ueda
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Osaka 565-0871, Japan
- Correspondence: (S.M.); (Y.U.); Tel.: +81-6-6945-1181 (S.M.); +81-6-6879-3355 (Y.U.)
| | - Satoko Matsuzaki
- Department of Obstetrics and Gynecology, Osaka General Medical Center, Osaka 558-8558, Japan
| | - Mamoru Kakuda
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Osaka 565-0871, Japan
| | - Misooja Lee
- Department of Forensic Medicine, School of Medicine, Kindai University, Osaka 589-8511, Japan
| | - Yuki Takemoto
- Department of Gynecology, Osaka International Cancer Institute, Osaka 541-8567, Japan
| | - Harue Hayashida
- Department of Gynecology, Osaka International Cancer Institute, Osaka 541-8567, Japan
| | - Michihide Maeda
- Department of Gynecology, Osaka International Cancer Institute, Osaka 541-8567, Japan
| | - Reisa Kakubari
- Department of Gynecology, Osaka International Cancer Institute, Osaka 541-8567, Japan
| | - Tsuyoshi Hisa
- Department of Gynecology, Osaka International Cancer Institute, Osaka 541-8567, Japan
| | - Seiji Mabuchi
- Department of Gynecology, Osaka International Cancer Institute, Osaka 541-8567, Japan
| | - Shoji Kamiura
- Department of Gynecology, Osaka International Cancer Institute, Osaka 541-8567, Japan
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Manvelyan E, Millington KA, Abittan BS, Blitz MJ, Kwait B, Shan W, Goldman RH. Histopathologic evaluation of dichorionic twin placentas in unassisted and in vitro fertilized pregnancies affected by preeclampsia. J Matern Fetal Neonatal Med 2022; 35:10262-10270. [PMID: 36167346 DOI: 10.1080/14767058.2022.2121645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
OBJECTIVE Pregnancies achieved with assisted reproductive technology have an increased risk of multiple gestations, preeclampsia, and placental morphologic abnormalities. Inflammatory processes affect dichorionic twin pregnancies disproportionately more than singleton gestations and have been associated with adverse pregnancy outcomes, such as fetal growth restriction and preeclampsia. Our objective is to investigate the placental morphology of dichorionic twin pregnancies complicated by preeclampsia conceived with in vitro fertilization (IVF) versus unassisted. METHODS This is a retrospective analysis of placentas from dichorionic twin pregnancies affected by preeclampsia conceived with IVF versus without assistance from 2010 to 2016 at a tertiary care university hospital. Placental pathology findings were analyzed both independently and in aggregate stratified into composite outcome scores using a modified placental synoptic framework. Individual placental abnormalities were grouped into composite categories based on the site of origin: anatomic placental abnormalities; maternal vascular malperfusion; placental villous maldevelopment; fetal vascular malperfusion; chronic utero-placental separation; maternal-fetal interface disturbance; inflammation of infectious etiology; and inflammation of idiopathic etiology. Placental histopathological statistical analysis was performed using Fisher's exact test. Demographic variables and pregnancy outcomes were compared between groups using the Student's t test or Mann-Whitney U test, where appropriate. p < .05 defined statistical significance. RESULTS Of 117 dichorionic twin pregnancies, 60 resulted from IVF (Group A) and 57 were conceived without assistance (Group B). Patients in Group A were older (36 [29-37] vs. 33 [32-38] respectively; p = .042) and less parous (18.3% vs. 38.6% percent parous in Group A and Group B, respectively p = .009) than Group B, respectively. No differences were found between groups regarding mode of delivery, gestational age at delivery, placental weight/birthweight, fetal growth restriction, and discordance of fetal growth. There were significantly more inflammatory changes of unknown etiology and composite inflammatory abnormalities in Group A versus Group B (26.7% vs. 10.5%, p = .02). The cumulative number of inflammatory abnormalities per patient had a significantly different distribution among groups (p = .005), and Composite Chronic Inflammation and Infection were found to be significantly more abundant in Group A versus Group B (p = .02). The distribution of placental composite anatomic placental abnormalities, maternal vascular malperfusion, placental villous maldevelopment, fetal vascular malperfusion, chronic utero-placental separation, or maternal-fetal interface disturbance was not statistically different between groups. The distribution of placental abnormalities was not different between groups for any individually analyzed pathological condition. Due to the relatively small sample size, adjustment for potential confounders was not performed. CONCLUSION Dichorionic twin pregnancies affected by preeclampsia are associated with more placental inflammatory abnormalities if conceived with IVF versus unassisted. Further research is needed to ascertain the underlying mechanisms of these observed differences.
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Affiliation(s)
- Evelina Manvelyan
- Department of Obstetrics & Gynecology, Zucker School of Medicine at Hofstra/Northwell South Shore University Hospital, Bay Shore, NY, USA
| | - Karmaine A Millington
- Department of Pathology and Laboratory Medicine, Zucker School of Medicine at Hofstra/Northwell, New York, NY, USA
| | - Baruch S Abittan
- Department of Obstetrics & Gynecology Division of Reproductive Endocrinology and Infertility Zucker School of Medicine at, Hofstra/Northwell. Manhasset, New York, NY, USA
| | - Matthew J Blitz
- Department of Obstetrics & Gynecology Division of Maternal-Fetal Medicine Zucker School of Medicine at, Hofstra/Northwell, Bay Shore, NY, USA
| | - Brittany Kwait
- Donald and Barbara Zucker School of Medicine at, Hofstra/Northwell, Manhasset, NY, USA
| | - Weiwei Shan
- Department of Obstetrics & Gynecology, Biostatistics Unit at The Feinstein School of Medical Research, New York, NY, USA
| | - Randi H Goldman
- Department of Obstetrics & Gynecology Division of Reproductive Endocrinology and Infertility Zucker School of Medicine at, Hofstra/Northwell. Manhasset, New York, NY, USA
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15
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Wang X, Li L, Yuan P, Zhao Y, Wei Y. Effect of fetoscopic laser surgery on the placental characteristics and birth-weight discordance of twins with twin-to-twin transfusion syndrome. Front Med (Lausanne) 2022; 9:942816. [PMID: 36250079 PMCID: PMC9556886 DOI: 10.3389/fmed.2022.942816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 08/31/2022] [Indexed: 11/30/2022] Open
Abstract
Objective This study explored the effect of fetoscopic laser surgery on the placental structure and birth-weight discordance of twin-to-twin transfusion syndrome (TTTS). Methods A retrospective cohort study was conducted in TTTS patients who were admitted to the Peking University Third Hospital between April 2014 and April 2020. The patients were divided into two groups: laser group and control group. Placentas with twin survival were injected, and pregnancy outcomes and placental characteristics of the two groups were compared. The correlation between the birth-weight discordance and placental characteristics in each group was analyzed. Results The gestational age at first diagnosis in the laser group was significantly smaller than that in the control group (21.6 ± 2.8 weeks vs. 27.7 ± 3.0 weeks, p < 0.001). The proportion of patients with TTTS stage-I in the laser group was significantly lower than the control group (9.4 vs. 64.0%, p < 0.001). The gestational age at delivery in the laser group was significantly larger than that in the control group (33.6 ± 2.1 weeks vs. 31.4 ± 2.5 weeks, p = 0.001). In the laser group, the birth-weight discordance ratio was positively correlated with the placental territory discordance ratio (Spearman coefficient = 0.556; p = 0.001). Conclusion The birth-weight discordance is positively correlated with placental territory discordance in TTTS patients after FLS.
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Affiliation(s)
| | | | | | | | - Yuan Wei
- *Correspondence: Yuan Wei, ; orcid.org/0000-0003-3387-7549
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16
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Grisolia G, Bianchi A. Intertwin-membrane insertion: An ultrasound marker of defective growth in dichorionic/diamniotic twins. JOURNAL OF CLINICAL ULTRASOUND : JCU 2022; 50:964-966. [PMID: 36069466 DOI: 10.1002/jcu.23245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Revised: 05/19/2022] [Accepted: 05/19/2022] [Indexed: 06/15/2023]
Affiliation(s)
- Gianpaolo Grisolia
- Department of Obstetrics and Gynecology, Azienda Ospedaliera Carlo Poma, ASST Mantova, Italy, Strada Largo Paiolo, 10, Mantova, Lombardy, 46100, Italy
| | - Annalisa Bianchi
- Department of Obstetrics and Gynecology, Azienda Ospedaliera Carlo Poma, ASST Mantova, Via Largo Paiolo, 10, Mantova, Lombardy, 46100, Italy
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17
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Can S, Has R, Turkyilmaz G, Aktoz F, Yuksel A. Intertwin membrane cord insertion in dichorionic twin pregnancy: The description and comparison with other umbilical cord insertion types. JOURNAL OF CLINICAL ULTRASOUND : JCU 2022; 50:958-963. [PMID: 35665512 DOI: 10.1002/jcu.23246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 04/19/2022] [Accepted: 04/23/2022] [Indexed: 06/15/2023]
Abstract
PURPOSE Multiple pregnancy is associated with high perinatal mortality and morbidity. Abnormal cord insertions more common in twin pregnancies compared to singleton pregnancies and velamentous cord insertion is related with poor pregnancy outcomes. There is no definition of velamentous cord insertion into the intertwine membrane between two fetuses in the literature. METHODS In our single-center cross-sectional study, monochorionic-diamniotic and dichorionic-diamniotic twins who were admitted to our clinic between 18 + 0 and 23 + 6 weeks of pregnancy were enrolled in this study. We evaluated fetal, placental, and umbilical cord abnormalities in addition to fetal growth restrictions and weight discordance by ultrasonography. RESULTS Although abnormal cord insertion frequency was significantly higher in monochorionic twins (p = 0.003), intertwin membrane cord insertion could only occur in dichorionic twins. In cases with cord insertion anomaly; FGR and weight discordance was observed more frequently (p < 0.001 and p = 0.003, respectively). Weight discordance, the presence of abnormal cord insertion and abnormal UAD were found as statistically significant predictors of FGR (p < 0.001, p = 0.021, and p < 0.001, respectively). CONCLUSION Intertwin membrane insertion is a novel umbilical cord insertion abnormality. The presence of abnormal umbilical cord insertion is a risk factor for poor pregnancy outcomes in twin pregnancies.
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Affiliation(s)
- Sultan Can
- Department of Obstetrics and Gynecology, Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Recep Has
- Division of Perinatology, Department of Obstetrics and Gynecology, Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Gurcan Turkyilmaz
- Division of Perinatology, Department of Obstetrics and Gynecology, Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Fatih Aktoz
- Department of Obstetrics and Gynecology, VKV American Hospital, Istanbul, Turkey
| | - Atil Yuksel
- Division of Perinatology, Department of Obstetrics and Gynecology, Faculty of Medicine, Istanbul University, Istanbul, Turkey
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Assisted Reproductive Technique and Abnormal Cord Insertion: A Systematic Review and Meta-Analysis. Biomedicines 2022; 10:biomedicines10071722. [PMID: 35885027 PMCID: PMC9312931 DOI: 10.3390/biomedicines10071722] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 07/13/2022] [Accepted: 07/14/2022] [Indexed: 12/19/2022] Open
Abstract
Abnormal cord insertion (ACI) is associated with adverse obstetric outcomes; however, the relationship between ACI and assisted reproductive technology (ART) has not been examined in a meta-analysis. This study examines the association between ACI and ART, and delivery outcomes of women with ACI. A systematic review was conducted, and 16 studies (1990–2021) met the inclusion criteria. In the unadjusted pooled analysis (n = 10), ART was correlated with a higher rate of velamentous cord insertion (VCI) (odds ratio (OR) 2.14, 95% confidence interval (CI) 1.64–2.79), marginal cord insertion (n = 6; OR 1.58, 95%CI 1.26–1.99), and vasa previa (n = 1; OR 10.96, 95%CI 2.94–40.89). Nevertheless, the VCI rate was similar among the different ART types (blastocyst versus cleavage-stage transfer and frozen versus fresh embryo transfer). Regarding the cesarean delivery (CD) rate, women with VCI were more likely to have elective (n = 3; OR 1.13, 95%CI 1.04–1.22) and emergent CD (n = 5; OR 1.93, 95%CI 1.82–2.03). In conclusion, ART may be correlated with an increased prevalence of ACI. However, most studies could not exclude confounding factors; thus, further studies are warranted to characterize ART as a risk factor for ACI. In women with ACI, elective and emergent CD rates are high.
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Van Lierde A, Delagrange H, Russo FM, Van der Merwe J, Devlieger R, Lewi L. Are there differences between monochorionic twin placentas after spontaneous and assisted conception? Placenta 2022; 126:171-174. [PMID: 35842947 DOI: 10.1016/j.placenta.2022.07.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 07/01/2022] [Accepted: 07/05/2022] [Indexed: 11/25/2022]
Abstract
INTRODUCTION No data are available on the placental characteristics of monochorionic twin pregnancies conceived by in vitro fertilization (IVF). This study investigates the differences between placentas from monochorionic diamniotic (MCDA) twin pregnancies conceived spontaneously and those conceived after IVF. METHODS This is a retrospective analysis of placental data from a consecutive series of MCDA twin pregnancies followed from the first trimester. The following placental characteristics were compared between IVF versus spontaneous MCDA pregnancies: placental sharing and birth weight discordance relative to placental sharing, the placental angioarchitecture (number, type, and size of anastomoses), and the umbilical cord insertion types. RESULTS Of the 256 MCDA placentas included in this analysis, 32 (12%) were conceived through IVF and 224 (88%) spontaneously. MCDA twin placentas after IVF did not differ significantly from MCDA twin placentas after spontaneous conception regarding placental sharing, birthweight discordance relative to sharing discordance, and angioarchitecture. There was a trend toward more discordant cord insertions (combination eccentric and velamentous) in IVF (25%) than in spontaneously conceived placentas (12%) (P = 0.05). DISCUSSION No differences could be demonstrated between MCDA placentation after spontaneous conception and IVF. Any differences in pregnancy outcome between spontaneous and IVF conceived MCDA twins may not be related to differences in placental sharing, angioarchitecture and cord insertion type.
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Affiliation(s)
- Anette Van Lierde
- Department of Obstetrics and Gynecology, University Hospitals Leuven, Leuven, Belgium
| | - Hannelore Delagrange
- Department of Obstetrics and Gynecology, University Hospitals Leuven, Leuven, Belgium
| | - Francesca Maria Russo
- Department of Obstetrics and Gynecology, University Hospitals Leuven, Leuven, Belgium
| | | | - Roland Devlieger
- Department of Obstetrics and Gynecology, University Hospitals Leuven, Leuven, Belgium; Department of Development and Regeneration, KU Leuven, Department of Obstetrics and Gynecology, University Hospitals Leuven, Belgium
| | - Liesbeth Lewi
- Department of Obstetrics and Gynecology, University Hospitals Leuven, Leuven, Belgium; Department of Development and Regeneration, KU Leuven, Department of Obstetrics and Gynecology, University Hospitals Leuven, Belgium.
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20
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The role of obstetric pessary and micronized progesteron in early preterm birth prevention in patients with multiple pregnancy. ACTA BIOMEDICA SCIENTIFICA 2022. [DOI: 10.29413/abs.2022-7.3.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Background. Multiple pregnancy is a well-established risk factor for preterm birth. Prevention of early termination of pregnancy is a priority problem in obstetric practice.The aim. To evaluate the role of an obstetric pessary and micronized progesterone in the prevention of early preterm labor in patients with multiple pregnancies.Materials and methods. A prospective controlled study was conducted with the inclusion of 146 pregnant women with multiple pregnancies, which, depending on the methods of treatment, were divided into three groups: Group I (n = 67) – pregnant women who received micronized progesterone in combination with an obstetric pessary; Group II (n = 57) included women who received micronized progesterone; Group III (n = 22) consisted of patients with multiple pregnancies without therapy.Results. In Group I, the complex of an obstetric pessary and micronized progesterone allowed to reduce the frequency of preterm birth by 2.3 times (p = 0.008) in comparison with Group III, the frequency of births at gestational age ≤ 34 weeks – by 8.1 times (p = 0.005) in compared with Group III and 2.7 times (p < 0.01) compared with Group II. In 70.4 % of pregnant women, the use of a complex of an obstetric pessary with micronized progesterone made it possible to prevent the formation of isthmiccervical insufficiency, which, according to sonography, was expressed in the dynamics of the utero-cervical angle towards a more obtuse one.Conclusion. The use of an obstetric pessary with micronized progesterone made it possible to reduce the risks of isthmic-cervical insufficiency by 7.7 % compared with patients who received only micronized progesterone therapy, and by 17.1 % compared with pregnant women who did not receive therapy.
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Miremberg H, Nassar M, Herman HG, Marelly C, Feldstein O, Barber E, Schreiber L, Bar J, Kovo M. Is there an impact of fetal sex in dichorionic discordant twins on placental histopathological abnormalities? Eur J Obstet Gynecol Reprod Biol 2022; 274:166-170. [PMID: 35661538 DOI: 10.1016/j.ejogrb.2022.05.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 05/16/2022] [Accepted: 05/25/2022] [Indexed: 12/01/2022]
Abstract
INTRODUCTION Growth discordancy in dichorionic diamniotic (DCDA) twin gestations is a known complication associated with adverse neonatal outcomes. We aimed to study the differences in placental pathology, in relation to fetal sex, in DCDA twin gestations complicated with growth discordancy. METHODS The medical files of all DCDA twin deliveries complicated by growth discordancy between 2010 and 2020 were reviewed. Growth discordance was defined as a gap between twin birthweights > 20%. A comparison was made between female vs. male growth discordant twins. Placental lesions were classified as lesions related to maternal or fetal malperfusion lesions (MVM, FVM), vascular and villous changes, and inflammatory lesions. RESULTS Included 174 DCDA twins. Eighty-eight were in the discordant female group and eighty-six in the discordant male group. The groups did not differ in maternal demographics, pregnancy characteristics, and neonatal outcome. The discordant male group had a higher rate of placental MVM lesions as compared to the discordant female group (p = 0.003). The increased rate of placental MVM lesions in the discordant male group compared to the discordant female group did not change whether its co-twin was of similar or opposite sex. DISCUSSION Higher rate of MVM lesions characterizes growth discordant male neonates in DCDA twin gestations. This finding could represent a different adaptation of male fetuses to a hostile intrauterine environment.
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Affiliation(s)
- Hadas Miremberg
- Department of Obstetrics & Gynecology, The Edith Wolfson Medical Center, Holon, Israel; Sackler Faculty of Medicine, Tel-Aviv University, Israel
| | - Marwa Nassar
- Sackler Faculty of Medicine, Tel-Aviv University, Israel
| | - Hadas Ganer Herman
- Department of Obstetrics & Gynecology, The Edith Wolfson Medical Center, Holon, Israel; Sackler Faculty of Medicine, Tel-Aviv University, Israel
| | - Cindy Marelly
- Department of Obstetrics & Gynecology, The Edith Wolfson Medical Center, Holon, Israel; Sackler Faculty of Medicine, Tel-Aviv University, Israel
| | - Ohad Feldstein
- Department of Obstetrics & Gynecology, The Edith Wolfson Medical Center, Holon, Israel; Sackler Faculty of Medicine, Tel-Aviv University, Israel
| | - Elad Barber
- Department of Obstetrics & Gynecology, The Edith Wolfson Medical Center, Holon, Israel; Sackler Faculty of Medicine, Tel-Aviv University, Israel
| | - Letizia Schreiber
- Department of Pathology, The Edith Wolfson Medical Center, Holon, Israel; Sackler Faculty of Medicine, Tel-Aviv University, Israel
| | - Jacob Bar
- Department of Obstetrics & Gynecology, The Edith Wolfson Medical Center, Holon, Israel; Sackler Faculty of Medicine, Tel-Aviv University, Israel
| | - Michal Kovo
- Department of Obstetrics & Gynecology, The Edith Wolfson Medical Center, Holon, Israel; Sackler Faculty of Medicine, Tel-Aviv University, Israel.
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22
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Lewi L. What fetal medicine specialists should know about the monochorionic placenta. Best Pract Res Clin Obstet Gynaecol 2022; 84:17-32. [PMID: 35430160 DOI: 10.1016/j.bpobgyn.2022.03.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 03/07/2022] [Indexed: 11/28/2022]
Abstract
Monochorionic twins are at risk of transfusion imbalances as long as they are connected to the shared placenta during their intrauterine journey. This review article addresses the macroscopic examination of the monochorionic placenta at the time of birth and explains placental dye injection studies to document the vascular anastomoses and placental sharing. We elaborate on the different types of anastomoses, the importance of how the placenta is divided between the twins, and the angioarchitecture in twin-twin transfusion syndrome, twin anemia polycythemia sequence and selective fetal growth restriction.
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Affiliation(s)
- Liesbeth Lewi
- Fetal Medicine Unit, Dept. Obstetrics and Gynecology, University Hospitals Leuven, Herestraat 49, 3000 Leuven, Belgium.
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Wang X, Shi H, Li L, Yuan P, Zhao Y, Wei Y. A study on the correlation of placental characteristics and the onset of selective intrauterine growth restriction. Sci Prog 2022; 105:368504221086358. [PMID: 35275497 PMCID: PMC10358541 DOI: 10.1177/00368504221086358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE To investigate the correlation between placental characteristics and the onset of selective intrauterine growth restriction (sIUGR) and to explore the influence of placental characteristics on sIUGR onset. METHODS A retrospective cohort study was conducted at our hospital from April 2013 to April 2019. The pregnancy data and placental perfusion of 114 sIUGR patients who had received conservative treatment and delivered in our hospital were included. Correlation analysis was conducted between the total diameter of placental anastomoses, placental territory discordance, umbilical cord insertion point distance ratio, and the onset time of sIUGR. RESULTS The prevalence of AA anastomoses was 88.6% (101/114), with an average total diameter of 2.8 ± 1.5 mm, the prevalence of AV anastomoses was 93.9% (107/114), with an average diameter of 5.4 ± 3.6 mm, and the prevalence of VV anastomoses was 18.4% (21/114), with an average diameter of 4.0 ± 1.9 mm. There was a significant negative correlation between the time of sIUGR onset and the placental territory discordance ratio with a Spearman correlation coefficient of -0.306 (P = 0.001). CONCLUSIONS The larger the placental territory discordance, the earlier onset time of sIUGR.
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Affiliation(s)
- Xueju Wang
- Department of Obstetrics and Gynecology, Peking University Third Hospital, No.49 Hua Yuan North Road, Hai Dian District, Beijing 100191, China
| | - Huifeng Shi
- Department of Obstetrics and Gynecology, Peking University Third Hospital, No.49 Hua Yuan North Road, Hai Dian District, Beijing 100191, China
| | - Luyao Li
- Department of Obstetrics and Gynecology, Peking University Third Hospital, No.49 Hua Yuan North Road, Hai Dian District, Beijing 100191, China
| | - Pengbo Yuan
- Department of Obstetrics and Gynecology, Peking University Third Hospital, No.49 Hua Yuan North Road, Hai Dian District, Beijing 100191, China
| | - Yangyu Zhao
- Department of Obstetrics and Gynecology, Peking University Third Hospital, No.49 Hua Yuan North Road, Hai Dian District, Beijing 100191, China
| | - Yuan Wei
- Department of Obstetrics and Gynecology, Peking University Third Hospital, No.49 Hua Yuan North Road, Hai Dian District, Beijing 100191, China
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Wang Y, Zeng H, Liu J, Zhang F. Gestational hypertensive disease and birthweight discordance in twin pregnancies: a systematic review and meta-analysis. J Matern Fetal Neonatal Med 2021; 35:8869-8877. [PMID: 34818972 DOI: 10.1080/14767058.2021.2005572] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
INTRODUCTION The objective of this systematic review was to explore the association between gestational hypertensive disease (GHD) and birthweight discordance in twin pregnancies. METHODS PubMed, Embase, Web of Science and Cochrane Library were systematically searched for studies reporting the risk of birthweight discordance in twin pregnancies complicated compared with those not complicated by GHD from establishment until July 2021. Risk of bias was assessed with the Newcastle-Ottawa Scale. According to the classification of GHD, sub-group analyses reporting cases with gestational hypertension (GH), chronic hypertension (CH) and preeclampsia (PE) were performed separately. Stratification by twin chorionicity (dichorionic (DC) and monochorionic (MC)) was also conducted. When there was substantial heterogeneity (I2 ≥ 50%), the random effect mode was used to estimate the pooled risk ratio, otherwise the fixed effect model was used. RESULTS Nine studies (303,204 twin pregnancies) were included. GHD (OR 1.45, 95% CI 1.41-1.49) was a risk factor for intertwin birthweight discordance [PE (OR 1.69, 95% CI 1.33-2.16); CH (OR 1.59, 95% CI 1.46-1.73); GH (OR1.45, 95%Cl 1.10-1.92]. After stratification, birthweight discordance was related to GHD (OR 2.51, 95% CI 2.01-3.14), GH (OR 2.08, 95% CI 1.33-3.25) and PE (OR 2.74, 95% CI 2.09-3.61) in DC pregnancies, but no longer associated with GHD and PE in MC group. CONCLUSIONS Twin gestations complicated with GHD, especially in DC pregnancies, were at significantly higher risk of birthweight discordance.
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Affiliation(s)
- Yuan Wang
- Medical College, Nantong University, Nantong City, China
| | - Hongying Zeng
- Department of Gynaecology and Obstetrics, Jianhu Hospital Affiliated to Nantong University, Yancheng City, China
| | - Jing Liu
- Medical College, Nantong University, Nantong City, China
| | - Feng Zhang
- Medical College, Nantong University, Nantong City, China
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Sherer DM, Al-Haddad S, Cheng R, Dalloul M. Current Perspectives of Prenatal Sonography of Umbilical Cord Morphology. Int J Womens Health 2021; 13:939-971. [PMID: 34703323 PMCID: PMC8541738 DOI: 10.2147/ijwh.s278747] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 09/04/2021] [Indexed: 12/15/2022] Open
Abstract
The umbilical cord constitutes a continuation of the fetal cardiovascular system anatomically bridging between the placenta and the fetus. This structure, critical in human development, enables mobility of the developing fetus within the gestational sac in contrast to the placenta, which is anchored to the uterine wall. The umbilical cord is protected by unique, robust anatomical features, which include: length of the umbilical cord, Wharton’s jelly, two umbilical arteries, coiling, and suspension in amniotic fluid. These features all contribute to protect and buffer this essential structure from potential detrimental twisting, shearing, torsion, and compression forces throughout gestation, and specifically during labor and delivery. The arterial components of the umbilical cord are further protected by the presence of Hyrtl’s anastomosis between the two respective umbilical arteries. Abnormalities of the umbilical cord are uncommon yet include excessively long or short cords, hyper or hypocoiling, cysts, single umbilical artery, supernumerary vessels, rarely an absent umbilical cord, stricture, furcate and velamentous insertions (including vasa previa), umbilical vein and arterial thrombosis, umbilical artery aneurysm, hematomas, and tumors (including hemangioma angiomyxoma and teratoma). This commentary will address current perspectives of prenatal sonography of the umbilical cord, including structural anomalies and the potential impact of future imaging technologies.
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Affiliation(s)
- David M Sherer
- The Division of Maternal Fetal Medicine, The Department of Obstetrics and Gynecology, State University of New York (SUNY), Downstate Health Sciences University, Brooklyn, NY, USA
| | - Sara Al-Haddad
- The Division of Maternal Fetal Medicine, The Department of Obstetrics and Gynecology, State University of New York (SUNY), Downstate Health Sciences University, Brooklyn, NY, USA
| | - Regina Cheng
- The Division of Maternal Fetal Medicine, The Department of Obstetrics and Gynecology, State University of New York (SUNY), Downstate Health Sciences University, Brooklyn, NY, USA
| | - Mudar Dalloul
- The Division of Maternal Fetal Medicine, The Department of Obstetrics and Gynecology, State University of New York (SUNY), Downstate Health Sciences University, Brooklyn, NY, USA
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Wang X, Li L, Yuan P, Zhao Y, Wei Y. Placental characteristics in different types of selective fetal growth restriction in monochorionic diamniotic twins. Acta Obstet Gynecol Scand 2021; 100:1688-1693. [PMID: 34075586 DOI: 10.1111/aogs.14204] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 04/10/2021] [Accepted: 05/27/2021] [Indexed: 01/15/2023]
Abstract
INTRODUCTION This study aimed to explore the differences in placental characteristics among three types of selective fetal growth restriction (sFGR) in monochorionic diamniotic twin pregnancies. MATERIAL AND METHODS A total of 123 placentas with sFGR between April 2013 and October 2019 were retrospectively analyzed after dye injection. Placental characteristics were compared among the three types. RESULTS The gestational age at diagnosis and delivery was less in sFGR II and III than in sFGR I (22.9 [21.7-33.6], 23.3 [20.0-26.1] and 25.7 [19.0-35.0] weeks, p < 0.001; 32.3 [31.6-35.1], 34.1 [29.9-34.7] and 35.5 [34.0-37.0] weeks, p < 0.001). The birthweight discordance ratio was less in sFGR I than in sFGR II (0.28 [0.14-0.43] and 0.30 [0.23-0.37], p < 0.001). The prevalence of a thick artery-artery anastomosis was higher in sFGR III than in sFGR I or II (81.8%, 44.9% and 48.6%, p = 0.010). The placental territory discordance ratio was higher in sFGR II and III than in sFGR I (0.60 [0.17-0.88], 0.60 [0.01-0.80] and 0.50 [0.01-0.71], p = 0.001). CONCLUSIONS Compared with sFGR I, the earlier onset time of sFGR II and III might be due to their higher placental territory discordance. The prevalence of thick artery-artery anastomoses was expected to be higher in sFGR III than in sFGR I or II.
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Affiliation(s)
- Xueju Wang
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
| | - Luyao Li
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
| | - Pengbo Yuan
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
| | - Yangyu Zhao
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
| | - Yuan Wei
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
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Ashwal E, Hiersch L, Berger H, Aviram A, Zaltz A, Kingdom J, Barrett J, Melamed N. Pathologic Basis for the Definition of Discordant Growth in Dichorionic Twins. Fetal Diagn Ther 2021; 48:279-287. [PMID: 33780952 DOI: 10.1159/000514328] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Accepted: 01/09/2021] [Indexed: 11/19/2022]
Abstract
OBJECTIVE The aim of the current study was to identify the optimal cutoff that should define discordance in dichorionic twin gestations through correlation with abnormal placental pathology as a specific measure of fetal growth restriction of the smaller twin. METHODS We performed a retrospective cohort study of all women with dichorionic twin pregnancies who gave birth in a single center between 2002 and 2015. We investigated the association between the level of growth discordance and maternal vascular malperfusion (MVM) pathology in the placenta of the smaller twin, with and without adjustment for whether the smaller twin is small for gestational age (SGA). RESULTS A total of 1,198 women with dichorionic twin gestation met the study criteria. The rate of MVM pathology in the placenta of the smaller twin increased with the level of discordance and was most obvious for discordance ≥25% (rate of MVM 12.0% compared with 2.8% in cases with discordance <10%, adjusted relative risk [aRR] 3.71, 95% confidence interval [CI] 1.97-6.99). When the analysis was adjusted for SGA of the smaller twin, discordance was independently associated with MVM pathology only when growth discordance was ≥25% (aRR 2.18, 95%-CI 1.01-4.93), while SGA was strongly associated with MVM pathology irrespective of the level of discordance. CONCLUSION Our findings suggest that discordant growth in dichorionic twins should raise the concern of fetal growth restriction of the smaller twin, irrespective of whether the smaller twin is SGA, only when the discordance s ≥25%. The association of lower levels of discordance with abnormal placental pathology is mainly driven by the confounding effect of SGA of the smaller twin.
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Affiliation(s)
- Eran Ashwal
- Department of Obstetrics and Gynecology, Lis Maternity Hospital, Tel Aviv, Israel.,Sourasky Medical Center, Tel Aviv, Israel. Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Liran Hiersch
- Department of Obstetrics and Gynecology, Lis Maternity Hospital, Tel Aviv, Israel.,Sourasky Medical Center, Tel Aviv, Israel. Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Howard Berger
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, St. Michael's Hospital, Toronto, Ontario, Canada
| | - Amir Aviram
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Arthur Zaltz
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - John Kingdom
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Jon Barrett
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Nir Melamed
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
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Hall JG. The mystery of monozygotic twinning II: What can monozygotic twinning tell us about Amyoplasia from a review of the various mechanisms and types of monozygotic twinning? Am J Med Genet A 2021; 185:1822-1835. [PMID: 33765349 DOI: 10.1002/ajmg.a.62177] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 02/12/2021] [Accepted: 02/16/2021] [Indexed: 11/12/2022]
Abstract
Monozygotic (MZ) twins ("identical twins") are essentially unique to human beings. Why and how they arise is not known. This article reviews the possible different types of MZ twinning recognized in the previous article on twins and arthrogryposis. There appear to be at least three subgroups of MZ twinning: spontaneous, familial, and those related to artificial reproductive technologies. Each is likely to have different etiologies and different secondary findings. Spontaneous MZ twinning may relate to "overripe ova." Amyoplasia, a specific nongenetic form of arthrogryposis, appears to occur in spontaneous MZ twinning and may be related to twin-twin transfusion.
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Affiliation(s)
- Judith G Hall
- University of British Columbia and Children's and Women's Health Centre of British Columbia, Department of Pediatrics and Medical Genetics, British Columbia Children's Hospital, Vancouver, British Columbia, Canada
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Lee HM, Lee S, Park MK, Han YJ, Kim MY, Boo HY, Chung JH. Clinical Significance of Velamentous Cord Insertion Prenatally Diagnosed in Twin Pregnancy. J Clin Med 2021; 10:jcm10040572. [PMID: 33546368 PMCID: PMC7913476 DOI: 10.3390/jcm10040572] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 01/19/2021] [Accepted: 01/30/2021] [Indexed: 12/16/2022] Open
Abstract
Background: The purpose of this study was to evaluate the prevalence of velamentous cord insertion (VCI) and the actual association between pathologically confirmed VCI and perinatal outcomes in twins based on the chorionicity. Methods: All twin pregnancies that received prenatal care at a specialty clinic for multiple pregnancies, from less than 12 weeks of gestation until delivery in a single institution between 2015 and 2018 were included in this retrospective cohort study. Results: A total of 941 twins were included in the study. The prevalence of VCI in dichorionic (DC) twins and monochorionic diamniotic (MCDA) twins was 5.8% and 7.8%, respectively (p = 0.251). In all study population, the prevalence of vasa previa and placenta accreta spectrum was higher in VCI group than that of non-VCI group (p = 0.008 and 0.022). In MCDA twins with VCI, birth weight, 1 and 5-min Apgar score were lower than DC twins with VCI (p = 0.010, 0.002 and 0.000). There was no significant association between VCI and selective fetal growth restriction (p = 0.486), twin-to-twin transfusion syndrome (p = 0.400), and birth-weight discordance (>20% and >25%) (p = 0.378 and 0.161) in MCDA twins. Conclusion: There was no difference in the incidence of VCI in twins based on the chorionicity. Moreover, VCI was not a risk factor for adverse perinatal outcomes excepting vasa previa and placenta accreta spectrum, which had a high incidence in twins with VCI.
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Affiliation(s)
- Hyun-Mi Lee
- Department of Obstetrics and Gynecology, CHA Ilsan Medical Center, CHA University, Goyang 10414, Korea; (H.-M.L.); (H.Y.B.)
| | - SiWon Lee
- Department of Obstetrics and Gynecology, Mount Sinai Medical Center, Miami Beach, FL 33109, USA;
| | - Min-Kyung Park
- Department of Obstetrics and Gynecology, Yonsei University College of Medicine, Seoul 03722, Korea;
| | - You Jung Han
- Department of Obstetrics and Gynecology, CHA Gangnam Medical Center, CHA University, Seoul 06135, Korea; (Y.J.H.); (M.Y.K.)
| | - Moon Young Kim
- Department of Obstetrics and Gynecology, CHA Gangnam Medical Center, CHA University, Seoul 06135, Korea; (Y.J.H.); (M.Y.K.)
| | - Hye Yeon Boo
- Department of Obstetrics and Gynecology, CHA Ilsan Medical Center, CHA University, Goyang 10414, Korea; (H.-M.L.); (H.Y.B.)
| | - Jin Hoon Chung
- Department of Obstetrics and Gynecology, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea
- Correspondence: ; Tel.: +82-2-3010-3654
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Yamamoto R, Nakanishi K, Kawaguchi H, Hayashi S, Ishii K. Prevalence of Extraplacental Anastomoses in Monochorionic Twin Pregnancies. Fetal Diagn Ther 2020; 48:24-27. [PMID: 33059349 DOI: 10.1159/000510636] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 08/03/2020] [Indexed: 11/19/2022]
Abstract
OBJECTIVES To evaluate the prevalence of extraplacental anastomoses (EPA) and the factors associated. METHODS A retrospective study including 144 placentas from monochorionic diamniotic (MCDA) twins delivering at one institution was performed. EPA were defined as any intertwin anastomosis located outside the chorionic plate on macroscopic inspection. The association with perinatal factors and with umbilical cord insertion site was analyzed. RESULTS The prevalence of EPA was 4.9% (7/144). Velamentous cord insertion of both twins was significantly associated with the presence of EPA in the multivariate logistic regression model (p = 0.045). DISCUSSION EPA was found in ≈5% of MCDA twin pregnancies.
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Affiliation(s)
- Ryo Yamamoto
- Department of Maternal Fetal Medicine, Osaka Women's and Children's Hospital, Osaka, Japan,
| | - Kentaro Nakanishi
- Department of Maternal Fetal Medicine, Osaka Women's and Children's Hospital, Osaka, Japan
| | - Haruna Kawaguchi
- Department of Maternal Fetal Medicine, Osaka Women's and Children's Hospital, Osaka, Japan
| | - Shusaku Hayashi
- Department of Maternal Fetal Medicine, Osaka Women's and Children's Hospital, Osaka, Japan
| | - Keisuke Ishii
- Department of Maternal Fetal Medicine, Osaka Women's and Children's Hospital, Osaka, Japan
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Bigelow CA, Robles BN, Pan S, Overbey J, Robin E, Melamed A, Bianco A, Mella MT. Placental cord insertion distance from the placental margin and its association with adverse perinatal outcomes. Eur J Obstet Gynecol Reprod Biol 2020; 255:51-55. [PMID: 33080485 DOI: 10.1016/j.ejogrb.2020.10.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 09/28/2020] [Accepted: 10/08/2020] [Indexed: 10/23/2022]
Abstract
OBJECTIVE The placental cord insertion (PCI) to the placental margin has not been well studied as a continuous variable in relation to birth outcomes. We sought to evaluate the impact of PCI distance on outcomes associated with placental function and development of fetal growth restriction (FGR). STUDY DESIGN This was a retrospective study of singleton gestations that underwent a fetal anatomy ultrasound from 2011-2013. The PCI was recorded as the distance in centimeters from the placental margin. Patients had FGR if the overall estimated fetal weight was <10 % for gestational age or abdominal circumference <5 % in the third trimester. Delivery, obstetric, and neonatal outcomes were obtained via medical chart review. Logistic and linear regression models were used to assess the impact of PCI distance on maternal and neonatal delivery outcomes. RESULTS Of the 1443 women who met inclusion criteria, 93.6 % delivered at term. The mean (±SD) PCI distance was 4.4 ± 1.4 cm. There was no association between PCI and cesarean delivery, peripartum hemorrhage (PPH), pre-eclampsia, 5-min Apgar, or intrauterine fetal demise. PCI distance was statistically significantly shorter in patients requiring neonatal intensive care unit (NICU) admission (4.1 ± 1.5 cm vs. 4.4 ± 1.4 cm, p = 0.02) and was associated with lower birthweight (p = 0.01), though this association was no longer seen when corrected for gestational age. There were 3.5 % of patients who developed FGR; PCI distances from the placental edge were not significantly different for patients who developed FGR compared to those who did not (4.2 ± 1.4 cm vs. 4.5 ± 1.4 cm, p = 0.18). Furthermore, a receiver operating characteristic (ROC) curve for PCI had poor sensitivity (area under the curve [AUC] 0.57, 95 % CI 0.49-0.65). CONCLUSION PCI distance at the time of fetal anatomic survey is significantly associated with NICU admission, though does not appear to impact rates of preterm birth, pre-eclampsia, PPH or cesarean delivery. PCI distance in singleton gestations does not appear to be predictive of FGR.
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Affiliation(s)
- Catherine A Bigelow
- Icahn School of Medicine at Mount Sinai, Department of Obstetrics, Gynecology, and Reproductive Science, Division of Maternal-Fetal Medicine, One Gustave L. Levy Place, New York, NY 10029, USA.
| | - Brittany N Robles
- Icahn School of Medicine at Mount Sinai, Department of Obstetrics, Gynecology, and Reproductive Science, Division of Maternal-Fetal Medicine, One Gustave L. Levy Place, New York, NY 10029, USA
| | - Stephanie Pan
- Icahn School of Medicine at Mount Sinai, Department of Obstetrics, Gynecology, and Reproductive Science, Division of Maternal-Fetal Medicine, One Gustave L. Levy Place, New York, NY 10029, USA
| | - Jessica Overbey
- Icahn School of Medicine at Mount Sinai, Department of Obstetrics, Gynecology, and Reproductive Science, Division of Maternal-Fetal Medicine, One Gustave L. Levy Place, New York, NY 10029, USA
| | - Esther Robin
- Icahn School of Medicine at Mount Sinai, Department of Obstetrics, Gynecology, and Reproductive Science, Division of Maternal-Fetal Medicine, One Gustave L. Levy Place, New York, NY 10029, USA
| | - Alexander Melamed
- Massachusetts General Hospital, Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, 55 Fruit Street, Boston, MA 02115, USA
| | - Angela Bianco
- Icahn School of Medicine at Mount Sinai, Department of Obstetrics, Gynecology, and Reproductive Science, Division of Maternal-Fetal Medicine, One Gustave L. Levy Place, New York, NY 10029, USA
| | - Maria Teresa Mella
- Icahn School of Medicine at Mount Sinai, Department of Obstetrics, Gynecology, and Reproductive Science, Division of Maternal-Fetal Medicine, One Gustave L. Levy Place, New York, NY 10029, USA
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Qiao P, Zhao Y, Jiang X, Xu C, Yang Y, Bao Y, Xie H, Ying H. Impact of growth discordance in twins on preeclampsia based on chorionicity. Am J Obstet Gynecol 2020; 223:572.e1-572.e8. [PMID: 32247845 DOI: 10.1016/j.ajog.2020.03.024] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 03/13/2020] [Accepted: 03/25/2020] [Indexed: 11/30/2022]
Abstract
BACKGROUND Despite extensive investigations over the last decade, preeclampsia remains an unpredictable pregnancy complication causing perinatal morbidity and mortality worldwide, particularly in twin pregnancies. OBJECTIVE This study aimed to determine the relationship between growth discordance in twin pregnancies and the risk for preeclampsia based on chorionicity. STUDY DESIGN This was a retrospective single-center study that included 2122 women with twin pregnancies who were admitted to a tertiary hospital between January 2013 and June 2016. Growth discordance was defined as twin birthweight difference ≥20%. Logistic regression models were used to analyze the association between growth discordance and risk for gestational hypertension-preeclampsia in all subjects. Stratified sampling by twin chorionicity (dichorionic and monochorionic) was also conducted. Further analysis was performed to estimate the association between the degree of growth discordance and gestational hypertension-preeclampsia risk in monochorionic and dichorionic twin pregnancies. RESULTS The prevalence of growth discordance was 17.6%. In all subjects, growth discordance was associated with increased risk for gestational hypertension-preeclampsia. After stratification by twin chorionicity, growth discordance was associated with an increased risk for gestational hypertension preeclampsia (adjusted odds ratio [AOR], 1.84; 95% confidence interval [CI], 1.26-2.67) and preeclampsia (AOR, 1.82; 95% CI, 1.21-2.73), including mild preeclampsia (AOR, 1.86; 95% CI, 1.02-3.37), severe preeclampsia (AOR, 1.78; 95% CI, 1.06-2.97; P<.05), and early-onset preeclampsia (AOR, 2.98; 95% CI, 1.40-6.32), in the dichorionic twin pregnancy group; however, no significant association was found in the monochorionic twin pregnancy group. A 10% increment of growth discordance in the dichorionic twin pregnancy group was associated with an elevated risk for gestational hypertension preeclampsia (AOR, 1.20; 95% CI, 1.02-1.41) and preeclampsia (AOR, 1.24; 95% CI, 1.04-1.48), including severe preeclampsia (AOR, 1.28; 95% CI, 1.04-1.59) and early-onset preeclampsia (AOR, 1.47; 95% CI, 1.08-2.00), but no significant association was found in the monochorionic twin pregnancy group. CONCLUSION Growth discordance is associated with an increased risk for preeclampsia in dichorionic but not in monochorionic twin pregnancy. In addition, the prevalence of preeclampsia increases significantly with increasing degree of growth discordance, reflecting a dose-response relationship in dichorionic twin pregnancy.
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Affiliation(s)
- Ping Qiao
- Department of Obstetrics, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China
| | - Yan Zhao
- Department of Women & Children's Health Care, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China
| | - Xiang Jiang
- Department of Obstetrics, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China
| | - Chuanlu Xu
- Department of Obstetrics, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China
| | - Yingying Yang
- Department of Women & Children's Health Care, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China
| | - Yirong Bao
- Department of Obstetrics, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China
| | - Han Xie
- Department of Obstetrics, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China
| | - Hao Ying
- Department of Obstetrics, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China.
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Eschbach SJ, Tollenaar LSA, Oepkes D, Lopriore E, Haak MC. Intermittent absent and reversed umbilical artery flows in appropriately grown monochorionic diamniotic twins in relation to proximate cord insertion: A harmful combination? Prenat Diagn 2020; 40:1284-1289. [PMID: 32412655 PMCID: PMC7539996 DOI: 10.1002/pd.5736] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 05/11/2020] [Accepted: 05/12/2020] [Indexed: 01/28/2023]
Abstract
Objective To compare the prevalence of intermittent absent or reversed end‐diastolic flow (iAREDF) in the umbilical artery in appropriately grown monochorionic diamniotic (MCDA) pregnancies with and without proximate cord insertion (PCI), and to evaluate pregnancy outcome. Methods The prevalence of iAREDF in MCDA pregnancies with PCI (n = 11) was compared with a control group without PCI (n = 33). PCI was defined as a distance between the cord insertions below the fifth percentile. Placental sharing, number, and diameter of anastomoses were assessed by placental examination. Pregnancy outcome was evaluated. Results iAREDF was present in 7/11 PCI pregnancies, compared with 0/33 in the control group (P ≤ .01). All PCI pregnancies and 94% of controls had arterioarterial (AA)‐anastomoses (P = .56), the diameter was larger in the PCI group, respectively 3.3 vs 2.1 mm (P = .03). Three cases with iAREDF had adverse outcome, two resulted in fetal death of which one with brain damage in the co‐twin, another underwent early premature emergency section for fetal distress. Conclusion iAREDF occurs in a large proportion of MCDA pregnancies with PCI and is related to the diameter of the AA anastomosis. We hypothesize that iAREDF in appropriately grown MCDA twin pregnancies reflects an unstable hemodynamic balance with an increased risk for fetal deterioration. Whether outcome in these pregnancies can be improved by altered management requires further investigation.
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Affiliation(s)
- Sanne Johanna Eschbach
- Division of Fetal Medicine, Department of Obstetrics, Leiden University Medical Center, Leiden, The Netherlands
| | - Lisanne S A Tollenaar
- Division of Fetal Medicine, Department of Obstetrics, Leiden University Medical Center, Leiden, The Netherlands
| | - Dick Oepkes
- Division of Fetal Medicine, Department of Obstetrics, Leiden University Medical Center, Leiden, The Netherlands
| | - Enrico Lopriore
- Division of Neonatology, Department of Pediatrics, Leiden University Medical Center, Leiden, The Netherlands
| | - Monique C Haak
- Division of Fetal Medicine, Department of Obstetrics, Leiden University Medical Center, Leiden, The Netherlands
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Buchanan-Hughes A, Bobrowska A, Visintin C, Attilakos G, Marshall J. Velamentous cord insertion: results from a rapid review of incidence, risk factors, adverse outcomes and screening. Syst Rev 2020; 9:147. [PMID: 32576295 PMCID: PMC7313176 DOI: 10.1186/s13643-020-01355-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 04/12/2020] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Velamentous cord insertion (VCI) is an umbilical cord attachment to the membranes surrounding the placenta instead of the central mass. VCI is strongly associated with vasa praevia (VP), where umbilical vessels lie in close proximity to the internal cervical os. VP leaves the vessels vulnerable to rupture, which can lead to fatal fetal exsanguination. Screening for VP using second-trimester transabdominal sonography (TAS) to detect VCI has been proposed. We conducted a rapid review investigating the quality, quantity and direction of evidence available on the epidemiology, screening test accuracy and post-screening management pathways for VCI. METHODS MEDLINE, Embase and the Cochrane Library were searched on 5 July 2016 and again on 11 October 2019, using general search terms for VP and VCI. Only peer-reviewed articles reporting on the epidemiology of VCI, the accuracy of the screening test and/or downstream management pathways for VCI pregnancies were included. Quality and risk of bias of each included study were assessed using pre-specified tools. RESULTS Forty-one relevant publications were identified; all but one were based on non-UK pregnancy cohorts, and most included relatively few VCI cases. The estimated incidence of VCI was 0.4-11% in singleton pregnancies, with higher incidence in twin pregnancies (1.6-40%). VCI incidence was also increased among pregnancies with one or more other risk factors, including in vitro fertilisation pregnancies or nulliparity. VCI incidence among women without any known risk factors was unclear. VCI was associated with adverse perinatal outcomes, most notably pre-term birth and emergency caesarean section in singleton pregnancies, and perinatal mortality in twins; however, associations varied across studies and the increased risk was typically low or moderate compared with pregnancies without VCI. In studies on limited numbers of cases, screening for VCI using TAS had good overall accuracy, driven by high specificity. No studies on post-screening management of VCI were identified. CONCLUSIONS Literature on VCI epidemiology and outcomes is limited and low-quality. The accuracy of second-trimester TAS and the benefits and harms of screening cannot be determined without prospective studies in large cohorts. Modelling studies may indicate the feasibility and value of studying the epidemiology of VCI and the potential impact of detecting VCI as part of a population screening programme for VP.
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Affiliation(s)
| | | | | | - George Attilakos
- Institute for Women’s Health, University College London, London, UK
- Fetal Medicine Unit, University College London Hospitals NHS Foundation Trust, London, UK
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35
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Wax JR, Pinette MG. Imaging the Placental Cord Insertion: Just Do It. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2020; 39:811-815. [PMID: 31674049 DOI: 10.1002/jum.15143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 09/04/2019] [Accepted: 09/08/2019] [Indexed: 06/10/2023]
Affiliation(s)
- Joseph R Wax
- Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, Maine Medical Center, Portland, Maine, USA
| | - Michael G Pinette
- Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, Maine Medical Center, Portland, Maine, USA
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36
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Zhang L, Liu X, Li J, Wang X, Huang S, Luo X, Zhang H, Wen L, Tong C, Saffery R, Yan J, Qi H, Kilby MD, Baker PN. Maternal Utero-Placental Perfusion Discordance in Monochorionic-Diamniotic Twin Pregnancies with Selective Growth Restriction Assessed by Three-Dimensional Power Doppler Ultrasound. Med Sci Monit 2020; 26:e919247. [PMID: 31971163 PMCID: PMC6996265 DOI: 10.12659/msm.919247] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Background The aim of this study was to assess the correlation between selective growth restriction (sGR) and co-twin utero-placental perfusion discordance by using three-dimensional power Doppler (3DPD). Material/Methods We prospectively recruited 60 sGR and 64 normal monochorionic-diamniotic (MCDA) twin pregnancies. Vascularization index (VI), flow index (FI), and vascularization flow index (VFI) were assessed by 3DPD, while umbilical artery pulsatility index (UA-PI), middle cerebral artery peak systolic velocity (MCA-PSV), pulsatility index (MCA-PI), and cerebroplacental ratio (CPR) were assessed by conventional Doppler imaging. Results In sGR co-twins, the VI, FI, VFI, MCA-PI, and CPR were significantly lower, while the UA-PI and MCA-PSV were significantly greater, in the smaller fetuses compared with the larger fetuses; significant differences were also observed in the VI, FI, VFI, CPR, and UA-PI in normal co-twins. Compared with the appropriately grown twins, the discordances of the VI, FI, VFI, UA-PI, MCA-PI, and CPR were increased in the sGR cohort. The discordances of the VI, FI, VFI, UA-PI, MCA-PI, and CPR were associated with birthweight discordance, and the FI discordance and CPR discordance were independently associated with sGR. The combination of the FI and CPR discordance showed a higher predictive accuracy for sGR, with an area under the ROC curve of 0.813, and a sensitivity and specificity of 68.33% and 85.94%, respectively. Conclusions MCDA twin pregnancies with birthweight discordance presented utero-placental perfusion deterioration assessed by 3DPD prior to sGR diagnosis. Co-twin utero-placental perfusion discordance was significantly correlated with growth discordance, and this correlation was more predictive of sGR when 3DPD was combined with conventional Doppler imaging.
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Affiliation(s)
- Lan Zhang
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland).,Fetal Medicine Unit, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland).,International Collaborative Joint Laboratory of Reproduction and Development of Ministry of Education P.R.C., Chongqing Medical University, Chongqing, China (mainland).,State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland)
| | - Xiyao Liu
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland).,International Collaborative Joint Laboratory of Reproduction and Development of Ministry of Education P.R.C., Chongqing Medical University, Chongqing, China (mainland).,State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland)
| | - Junnan Li
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland).,Fetal Medicine Unit, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland).,International Collaborative Joint Laboratory of Reproduction and Development of Ministry of Education P.R.C., Chongqing Medical University, Chongqing, China (mainland).,State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland)
| | - Xing Wang
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland).,Fetal Medicine Unit, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland).,International Collaborative Joint Laboratory of Reproduction and Development of Ministry of Education P.R.C., Chongqing Medical University, Chongqing, China (mainland).,State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland)
| | - Shuai Huang
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland).,Fetal Medicine Unit, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland).,International Collaborative Joint Laboratory of Reproduction and Development of Ministry of Education P.R.C., Chongqing Medical University, Chongqing, China (mainland).,State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland)
| | - Xiaofang Luo
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland).,International Collaborative Joint Laboratory of Reproduction and Development of Ministry of Education P.R.C., Chongqing Medical University, Chongqing, China (mainland).,State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland)
| | - Hua Zhang
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland).,International Collaborative Joint Laboratory of Reproduction and Development of Ministry of Education P.R.C., Chongqing Medical University, Chongqing, China (mainland).,State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland)
| | - Li Wen
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland).,International Collaborative Joint Laboratory of Reproduction and Development of Ministry of Education P.R.C., Chongqing Medical University, Chongqing, China (mainland).,State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland)
| | - Chao Tong
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland).,International Collaborative Joint Laboratory of Reproduction and Development of Ministry of Education P.R.C., Chongqing Medical University, Chongqing, China (mainland).,State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland)
| | - Richard Saffery
- Cancer, Disease and Developmental Epigenetics, Murdoch Children's Research Institute, Parkville, VIC, Australia.,Department of Pediatrics, University of Melbourne, Parkville, VIC, Australia
| | - Jianying Yan
- Fujian Provincial Maternity and Children's Hospital, Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China (mainland)
| | - Hongbo Qi
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland).,International Collaborative Joint Laboratory of Reproduction and Development of Ministry of Education P.R.C., Chongqing Medical University, Chongqing, China (mainland).,State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland).,Fujian Provincial Maternity and Children's Hospital, Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China (mainland)
| | - Mark D Kilby
- Institute of Metabolism and System Research, University of Birmingham, Edgbaston, United Kingdom.,Fetal Medicine Centre, Birmingham Women's and Children's Foundation Trust, Birmingham, United Kingdom
| | - Philip N Baker
- College of Life Sciences, University of Leicester, Leicester, United Kingdom
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Abstract
Primary disorders of placental implantation have immediate consequences for the outcome of a pregnancy. These disorders have been known to clinical science for more than a century, but have been relatively rare. Recent epidemiologic obstetric data have indicated that the rise in their incidence over the last 2 decades has been iatrogenic in origin. In particular, the rising numbers of pregnancies resulting from in vitro fertilization (IVF) and the increased use of caesarean section for delivery have been associated with higher frequencies of previa implantation, accreta placentation, abnormal placental shapes, and velamentous cord insertion. These disorders often occur together.
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Affiliation(s)
- Eric Jauniaux
- Academic Department of Obstetrics and Gynaecology, The EGA Institute for Women's Health, University College London (UCL), 86-96 Chenies Mews, London WC1E 6HX, UK.
| | - Ashley Moffett
- Department of Pathology, Centre for Trophoblast Research, University of Cambridge, Tennis Court Road, Cambridge CB2 1QP, UK
| | - Graham J Burton
- Department of Physiology, Development and Neuroscience, The Centre for Trophoblast Research, University of Cambridge, Physiology Building, Downing Street, Cambridge CB2 3EG, UK
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38
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Lin D, Wu S, Fan D, Li P, Chen G, Ma H, Ye S, Rao J, Zhang H, Chen T, Zeng M, Liu Y, Guo X, Liu Z. The effect of placental location identified before delivery on birthweight discordance among diamniotic-dichorionic twin pregnancies: a three-year retrospective cohort study. Sci Rep 2019; 9:12099. [PMID: 31431662 PMCID: PMC6702179 DOI: 10.1038/s41598-019-48667-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 08/07/2019] [Indexed: 11/28/2022] Open
Abstract
This retrospective cohort study aimed to investigate the effect of placental location on birthweight discordance among diamniotic-dichorionic twin pregnancies. Medical records and sonographic reports of 978 diamniotic-dichorionic twin pregnancies delivered at Foshan Maternal and Fetal Health Hospital were reviewed. Pregnancies with congenital malformation, intrauterine death or placenta previa were excluded. The placental location for each twin was determined by last sonographic examination before delivery, and the pregnancies were grouped by different versus same placental location in each pregnancy. Maternal and fetal characteristics were summarized. The primary outcome of interest was birthweight discordance (BWD) ≥20%, and secondary outcomes included small for gestational age (SGA) as a binary outcome and mean value and absolute difference in birthweight as continuous outcomes. Student’s t test and the chi-square test were used for univariate analyses, while multivariate regressions were used to adjust for confounders. General estimated equation (GEE) models were used to address the correlation between fetuses when assessing SGA. A total of 866 eligible subjects were included in the analysis. In total, 460 pregnancies had placentas with different locations, and 406 had placentas with same locations. The gestational age at delivery was slightly younger in the same placental location group than in the different placental location group (35.8 ± 0.1 vs. 36.1 ± 0.1 weeks, P = 0.067). Other maternal and fetal characteristics were comparable between the two study groups. There was no significant difference in BWD ≥20% (aOR = 1.06; 95% CI: 0.71–1.59) or SGA (aOR = 1.32; 95% CI: 0.76–2.28) between the same and different placental location groups. Neither the mean value nor the absolute difference in birth weight was associated with placental location combination (P = 0.478 and P = 0.162, respectively). In conclusion, discordant birthweight is not affected by same location of diamniotic-dichorionic placentas.
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Affiliation(s)
- Dongxin Lin
- Foshan Institute of Fetal Medicine, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, Guangdong, 528000, China.,Department of Obstetrics, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, Guangdong, 528000, China
| | - Shuzhen Wu
- Foshan Institute of Fetal Medicine, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, Guangdong, 528000, China.,Department of Obstetrics, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, Guangdong, 528000, China
| | - Dazhi Fan
- Foshan Institute of Fetal Medicine, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, Guangdong, 528000, China.,Department of Obstetrics, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, Guangdong, 528000, China
| | - Pengsheng Li
- Foshan Institute of Fetal Medicine, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, Guangdong, 528000, China.,Department of Obstetrics, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, Guangdong, 528000, China
| | - Gengdong Chen
- Foshan Institute of Fetal Medicine, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, Guangdong, 528000, China.,Department of Obstetrics, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, Guangdong, 528000, China
| | - Huiting Ma
- Foshan Institute of Fetal Medicine, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, Guangdong, 528000, China.,Department of Obstetrics, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, Guangdong, 528000, China
| | - Shaoxin Ye
- Foshan Institute of Fetal Medicine, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, Guangdong, 528000, China.,Department of Obstetrics, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, Guangdong, 528000, China
| | - Jiaming Rao
- Foshan Institute of Fetal Medicine, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, Guangdong, 528000, China.,Department of Obstetrics, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, Guangdong, 528000, China
| | - Huishan Zhang
- Foshan Institute of Fetal Medicine, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, Guangdong, 528000, China.,Department of Obstetrics, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, Guangdong, 528000, China
| | - Ting Chen
- Department of Obstetrics, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, Guangdong, 528000, China
| | - Meng Zeng
- Department of Obstetrics, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, Guangdong, 528000, China
| | - Yan Liu
- Department of Obstetrics, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, Guangdong, 528000, China
| | - Xiaoling Guo
- Foshan Institute of Fetal Medicine, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, Guangdong, 528000, China.,Department of Obstetrics, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, Guangdong, 528000, China
| | - Zhengping Liu
- Foshan Institute of Fetal Medicine, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, Guangdong, 528000, China. .,Department of Obstetrics, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, Guangdong, 528000, China.
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39
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Wang L, Horiuchi I, Kuwata T, Takagi K. Velamentous insertion of the umbilical cord in monochorionic triplet pregnancy: life-saving condition? BMJ Case Rep 2019; 12:12/4/e229643. [PMID: 31040147 DOI: 10.1136/bcr-2019-229643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Liangcheng Wang
- Obstetrics and Gynecology, Saitama Medical Center, Jichi Medical University, Saitama-shi, Japan
| | - Isao Horiuchi
- Obstetrics and Gynecology, Saitama Medical Center, Jichi Medical University, Saitama-shi, Japan
| | - Tomoyuki Kuwata
- Obstetrics and Gynecology, Saitama Medical Center, Jichi Medical University, Saitama-shi, Japan
| | - Kenjiro Takagi
- Obstetrics and Gynecology, Saitama Medical Center, Jichi Medical University, Saitama-shi, Japan
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40
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Lin D, Fan D, Wu S, Rao J, Zhang H, Chen T, Liu J, Ye S, Zeng M, Liu Y, Guo X, Liu Z. Role of velamentous cord insertion in monochorionic twin pregnancies: a PRISMA-compliant systematic review and meta-analysis of observational studies. J Matern Fetal Neonatal Med 2019; 33:2377-2386. [PMID: 30458694 DOI: 10.1080/14767058.2018.1551350] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Background: Velamentous cord insertion (VCI) has been proposed to be associated with some specific complications among monochorionic (MC) twin pregnancies. This meta-analysis and systematic review aims to determine the role of VCI in MC twin pregnancies.Methods: The PubMed, Embase and Web of Science databases and reference lists were searched for relevant studies. Outcomes of interest included twin-to-twin transfusion syndrome (TTTS), birthweight discordance (BWD) and selective intrauterine growth restriction (sIUGR). The methodological quality of the included studies was assessed by using the Newcastle-Ottawa Scale. The pooled results were calculated by means of a random or fixed effect model to obtain odds ratio with 95% confidential interval (CI). Subgroup analyses were utilized to detect the sources of heterogeneity.Results: Twenty studies were eligible for inclusion. The pooled result suggested a significant association between VCI and TTTS (OR, 1.542; 95% CI, 1.116-2.129) with a moderate level of heterogeneity (Q test: p = .024; I2 = 50.2%). Subgroup analysis reported single-center study, methodological quality and exclusion of laser-coagulated TTTS as the sources of heterogeneity. Another analysis revealed an increased risk of BWD among twin pregnancies with VCI (OR, 2.945; 95% CI, 2.176-3.984) with a low heterogeneity (Q test: p = .347; I2 = 10.5%). None of study level characteristics was found to be an influencing factor. Three studies reporting on sIUGR suggested a significant association between VCI and sIUGR.Conclusions: The meta-analysis and systematic review suggests an association between VCI and BWD and sIUGR. However, the association between VCI and TTTS may be overestimated and high-quality studies with a representative sample are needed in further research.
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Affiliation(s)
- Dongxin Lin
- Foshan Institute of Fetal Medicine, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, China.,Department of Obstetrics, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, China
| | - Dazhi Fan
- Foshan Institute of Fetal Medicine, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, China.,Department of Obstetrics, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, China
| | - Shuzhen Wu
- Foshan Institute of Fetal Medicine, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, China.,Department of Obstetrics, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, China
| | - Jiaming Rao
- Foshan Institute of Fetal Medicine, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, China.,Department of Obstetrics, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, China
| | - Huishan Zhang
- Foshan Institute of Fetal Medicine, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, China.,Department of Obstetrics, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, China
| | - Ting Chen
- Department of Obstetrics, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, China
| | - Juan Liu
- Department of Obstetrics, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, China
| | - Shaoxin Ye
- Foshan Institute of Fetal Medicine, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, China
| | - Meng Zeng
- Department of Obstetrics, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, China
| | - Yan Liu
- Department of Obstetrics, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, China
| | - Xiaoling Guo
- Foshan Institute of Fetal Medicine, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, China.,Department of Obstetrics, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, China
| | - Zhengping Liu
- Foshan Institute of Fetal Medicine, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, China.,Department of Obstetrics, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, China
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41
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Townsend R, D'Antonio F, Sileo FG, Kumbay H, Thilaganathan B, Khalil A. Perinatal outcome of monochorionic twin pregnancy complicated by selective fetal growth restriction according to management: systematic review and meta-analysis. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2019; 53:36-46. [PMID: 30207011 DOI: 10.1002/uog.20114] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 08/26/2018] [Accepted: 09/03/2018] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To explore the impact of severity and management (expectant, laser treatment or selective reduction) on perinatal outcome of monochorionic twin pregnancies complicated by selective fetal growth restriction (sFGR). METHODS MEDLINE, EMBASE, CINAHL, ClinicalTrials.gov and The Cochrane Library databases were searched for studies on outcome following expectant management, laser treatment or selective reduction in monochorionic twin pregnancies complicated by sFGR. Only pregnancies affected by sFGR and categorized according to the Gratacós classification (Type I, II or III) were included. The primary outcome was mortality, including single and double intrauterine (IUD), neonatal (NND) and perinatal deaths. Secondary outcomes were neonatal morbidity, abnormal postnatal brain imaging, intraventricular hemorrhage, periventricular leukomalacia, respiratory distress syndrome, admission to neonatal intensive care unit and survival free from neurological complications (intact survival). Meta-analyses of proportions were used to analyze the extracted data according to management, severity of sFGR and fetal size (smaller vs larger twin). RESULTS Sixteen observational studies (786 monochorionic twin pregnancies) were included. In pregnancies complicated by Type-I sFGR managed expectantly, IUD occurred in 3.1% (95% CI, 1.1-5.9%) of fetuses and 97.9% (95% CI, 93.6-99.9%) of twins had intact survival. In pregnancies complicated by Type-I sFGR treated using laser therapy, IUD occurred in 16.7% (95% CI, 0.4-64.1%) of fetuses and, in those treated using selective reduction, IUD occurred in 0% (95% CI, 0-34.9%) of cotwins, with no evidence of neurological complications in the survivors. In pregnancies complicated by Type-II sFGR managed expectantly, IUD occurred in 16.6% (95% CI, 6.9-29.5%) and NND in 6.4% (95% CI, 0.2-28.2%) of fetuses, and 89.3% (95% CI, 71.8-97.7%) of twins survived without neurological compromise. In Type-II sFGR pregnancies treated using laser therapy, IUD occurred in 44.3% (95% CI, 22.2-67.7%) of fetuses, while none of the affected cases experienced morbidity and survivors were free of neurological complications. Of pregnancies undergoing selective reduction, IUD of the cotwin occurred in 5.0% (95% CI, 0.03-20.5%) and NND in 3.7% (95% CI, 0.2-11.1%), and 90.6% (95% CI, 42.3-94.3%) of surviving cotwins were free from neurological complications. In pregnancies complicated by Type-III sFGR managed expectantly, IUD occurred in 13.2% (95% CI, 7.2-20.5%) and NND in 6.8% (95% CI, 0.7-18.6%) of fetuses, and 61.9% (95% CI, 38.4-81.9%) of twins had intact survival. In pregnancies complicated by Type-III sFGR treated with laser therapy, IUD occurred in 32.9% (95% CI, 20.9-46.2%) of fetuses and all surviving twins were without neurological complications. Finally, in pregnancies with Type-III sFGR treated with selective reduction, NND occurred in 5.2% (95% CI, 0.8-12.8%) of cotwins and 98.8% (95% CI, 93.9-99.9%) had intact survival. CONCLUSION Type-I sFGR is characterized by good perinatal outcome when managed expectantly, which represents the most reasonable management strategy for the large majority of affected cases. Pregnancies complicated by Type-II or -III sFGR treated with fetoscopic laser ablation have a higher rate of mortality but lower rate of morbidity compared with those managed expectantly, supporting the use of fetal therapy at gestations remote from neonatal viability. Data on outcome following selective reduction are scarce. In view of the lack of evidence from randomized controlled trials, prenatal management of sFGR should be individualized according to gestational age at diagnosis, severity of growth discordance and magnitude of Doppler anomalies. Copyright © 2018 ISUOG. Published by John Wiley & Sons Ltd.
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Affiliation(s)
- R Townsend
- Fetal Medicine Unit, Department of Obstetrics and Gynaecology, St George's University Hospitals NHS Foundation Trust, London, UK
| | - F D'Antonio
- Women's Health and Perinatology Research Group, Department of Clinical Medicine, Faculty of Health Sciences, UiT-The Arctic University of Norway, Tromsø, Norway
- Department of Obstetrics and Gynaecology, University Hospital of Northern Norway, Tromsø, Norway
| | - F G Sileo
- Fetal Medicine Unit, Department of Obstetrics and Gynaecology, St George's University Hospitals NHS Foundation Trust, London, UK
| | - H Kumbay
- GKT School of Medicine, King's College, London, UK
| | - B Thilaganathan
- Fetal Medicine Unit, Department of Obstetrics and Gynaecology, St George's University Hospitals NHS Foundation Trust, London, UK
- Vascular Biology Research Centre, Molecular and Clinical Sciences Research Institute, St George's University of London, London, UK
| | - A Khalil
- Fetal Medicine Unit, Department of Obstetrics and Gynaecology, St George's University Hospitals NHS Foundation Trust, London, UK
- Vascular Biology Research Centre, Molecular and Clinical Sciences Research Institute, St George's University of London, London, UK
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