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Noll ATR, Lof FC, Groene SG, Haak MC, Lopriore E, Russo FM, Slaghekke F, Tollenaar LSA, Van der Merwe J, Verweij EJT, Lewi L. Artery-to-vein anastomoses in unequally divided placentas and their association with birthweight discordance. Placenta 2024; 146:58-63. [PMID: 38181521 DOI: 10.1016/j.placenta.2023.12.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 12/20/2023] [Accepted: 12/27/2023] [Indexed: 01/07/2024]
Abstract
INTRODUCTION This study investigated the impact of the shared intertwin circulation in unequally divided monochorionic (MC) placentas on fetal growth. METHODS This retrospective analysis included color-dyed, unequally shared placentas from two tertiary centers. Exclusions included twin-twin transfusion syndrome, twin anemia polycythemia sequence, and lethal anomalies. Measurement of the external diameters and areas of the artery-to-artery (AA), artery-to-vein (AV), and vein-to-vein (VV) anastomoses was performed. The ratio of the shared circulation (AV ratio) was determined by comparing the areas of the summed venous components of shared AV anastomoses to those in the individual AV anastomoses of the smaller placental part. The birth weight ratio/placental ratio (BWR/PR), total AV size areas and net AV transfusion were calculated. Univariable and multivariable linear regressions were performed to assess the relationship between BWR/PR, the AV ratio, the areas of the different anastomoses and cord insertion discordance. RESULTS Among 352 placentas, 97 % (340) had intertwin AV anastomoses, and 50 % (176) were from pregnancies with selective growth restriction. The AV ratio, AA, VV, total AV areas, and cord insertion discordance negatively correlated with BWR/PR. Multivariable linear regression confirmed the independent negative association between BWR/PR and the AV ratio, suggesting that a larger shared circulation benefits the twin with the smaller placental part. Type III sFGR placentas exhibited the highest AV ratio, resulting in the lowest BWR/PR. DISCUSSION A larger shared circulation mitigates the impact of an unequally divided placenta on fetal growth. This effect surpasses the influence of AA and VV diameters and is most prominent in Type III sFGR placentas.
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Affiliation(s)
- A T R Noll
- Division of Fetal Medicine, Department of Obstetrics, Leiden University Medical Center, the Netherlands; Department of Obstetrics and Gynecology, University Hospitals Leuven, Leuven, Belgium
| | - F C Lof
- Division of Fetal Medicine, Department of Obstetrics, Leiden University Medical Center, the Netherlands
| | - S G Groene
- Division of Neonatology, Department of Pediatrics, Leiden University Medical Center, the Netherlands
| | - M C Haak
- Division of Fetal Medicine, Department of Obstetrics, Leiden University Medical Center, the Netherlands
| | - E Lopriore
- Division of Neonatology, Department of Pediatrics, Leiden University Medical Center, the Netherlands
| | - F M Russo
- Department of Obstetrics and Gynecology, University Hospitals Leuven, Leuven, Belgium
| | - F Slaghekke
- Division of Fetal Medicine, Department of Obstetrics, Leiden University Medical Center, the Netherlands
| | - L S A Tollenaar
- Division of Neonatology, Department of Pediatrics, Leiden University Medical Center, the Netherlands
| | - J Van der Merwe
- Department of Obstetrics and Gynecology, University Hospitals Leuven, Leuven, Belgium
| | - E J T Verweij
- Division of Fetal Medicine, Department of Obstetrics, Leiden University Medical Center, the Netherlands
| | - L Lewi
- Department of Obstetrics and Gynecology, University Hospitals Leuven, Leuven, Belgium; Department of Development and Regeneration, Biomedical Sciences, KU Leuven, Leuven, Belgium.
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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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Highlights from the International Twins Congress 2021. MATERNAL-FETAL MEDICINE 2022. [DOI: 10.1097/fm9.0000000000000166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Effect of Fetoscopic Laser Photocoagulation on Fetal Growth and Placental Perfusion in Twin-Twin Transfusion Syndrome. J Clin Med 2022; 11:jcm11154404. [PMID: 35956021 PMCID: PMC9368961 DOI: 10.3390/jcm11154404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 07/11/2022] [Accepted: 07/27/2022] [Indexed: 02/01/2023] Open
Abstract
Objective: To investigate the fetal growth pattern after fetoscopic laser photocoagulation (FLP) in twin-twin transfusion syndrome (TTTS) and the effect of FLP on placental perfusion and intrauterine growth restriction (IUGR) incidence. Methods: TTTS cases with a live delivery of both twins at least 28 days after FLP and with a neonatal follow-up at our hospital at least 60 days after delivery were included. The biometric data obtained before FLP (based on ultrasound); time point M1), upon birth (M2), and at neonatal follow-up (M3) were analyzed. The body weight discordance (BWD) was defined as (estimated fetal weight [body weight] of the recipient twin − estimated fetal weight [body weight] of the donor twin)/(estimated fetal weight [body weight] of the recipient twin) × 100%. Total weight percentile (TWP) was defined as the donor + recipient twin weight percentile; the TWP indirectly reflected the total placental perfusion. Results: the BWDs decreased from M1 to M2 to M3 (24.6, 15.9, and 5.1, respectively, p < 0.001, repeated measurements). The weight percentiles of recipient twins decreased after FLP, that is, from M1 to M2 (53.4% vs. 33.6%, respectively, p < 0.001, least significant difference [LSD] test). However, the weight percentiles of donor twins increased after delivery, that is, from M2 to M3 (13.2% vs. 26.2%, respectively, p < 0.001, LSD test). Moreover, the TWPs decreased after FLP, that is, from M1 to M2 (66.2% vs. 46.8%, respectively, p = 0.002, LSD test) and increased after delivery, that is, from M2 to M3 (46.8% vs. 63.2%, respectively, p = 0.024, LSD test). The IUGR incidences in donor twins were significantly lower after FLP (77.4% vs. 56.6%, respectively, p = 0.019, McNemar test) and further decreased after delivery (56.6% vs. 37.7%, respectively, p = 0.041, McNemar Test); however, no significant difference was observed in recipient twins’ IUGR incidences among M1, M2, and M3. The donor twin had catch- up growth in body weight, height, and head circumference after delivery, and the recipient twin had catch-up growth in only body height after delivery. Conclusions: the BWD decreased after FLP in fetuses with TTTS mainly because of the decreased weight percentiles of recipient twins. Moreover, it further decreased after delivery mainly because of the increased weight percentiles of donor twins. FLP not only decreased placental perfusion but also improved the TTTS prognosis because of reduced BWD and donor twin IUGR incidence.
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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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Couck I, Cauwberghs B, Van Aelst M, Vivanti AJ, Deprest J, Lewi L. The association between vein-to-vein anastomoses and birth weight discordance in relation to placental sharing in monochorionic twin placentas. Placenta 2022; 118:16-19. [PMID: 34995916 DOI: 10.1016/j.placenta.2021.12.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 12/19/2021] [Accepted: 12/29/2021] [Indexed: 01/14/2023]
Abstract
INTRODUCTION This study aims to examine the association between the presence and size of a vein-to-vein (VV) anastomosis and birth weight discordance relative to placental discordance in monochorionic diamniotic twin pregnancies. METHODS Placentas of two previous prospective studies were included in this retrospective analysis. After injection with color dye, we measured the placental surface of each twin and VV, artery-to-artery (AA), and artery-to-vein (AV) anastomoses on a digital photograph. We calculated the birth weight ratio (BWR), placental ratio (PR), and birth weight ratio/placenta ratio (BWR/PR), as well as total AV size and net AV transfusion. Placental characteristics were compared between placentas with and without VV anastomoses. We performed univariate analyses to assess the following predictors for BWR/PR: VV size, AA size, total AV size, and net AV transfusion. Multivariate analysis was then performed, including the variables significant in univariate analysis. RESULTS We analyzed 247 placentas: 58 (23%) with VV anastomoses and 189 without (77%). The BWR and PR were higher in the group with VV. In contrast, BWR/PR was lower in the group with VV anastomoses than in those without. The size of AA anastomoses was larger in placentas with VV anastomoses than in those without. In univariate analysis, VV size and AA size were significantly associated with BWR/PR. However, in multivariate regression, only VV size remained significantly associated with the BWR/PR. DISCUSSION VV anastomoses are associated with a decreased birth weight discordance relative to the placental sharing discordance, independent of the AA anastomoses.
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Affiliation(s)
- Isabel Couck
- Department of Obstetrics and Gynecology, University Hospitals Leuven, Leuven, Belgium
| | | | | | - Alexandre Joseph Vivanti
- Department of Obstetrics and Gynecology, University Hospitals Leuven, Leuven, Belgium; Department of Obstetrics and Gynecology, Antoine Béclère Hospital, Paris Saclay University, APHP, Clamart, France
| | - Jan Deprest
- Department of Obstetrics and Gynecology, University Hospitals Leuven, Leuven, Belgium; Department of Development and Regeneration, Cluster Woman and Child, Biomedical Sciences, KU Leuven, Leuven, Belgium; Institute for Women's Health University College London Hospital, London, United Kingdom
| | - Liesbeth Lewi
- Department of Obstetrics and Gynecology, University Hospitals Leuven, Leuven, Belgium; Department of Development and Regeneration, Cluster Woman and Child, Biomedical Sciences, KU Leuven, Leuven, Belgium.
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Rao MG, Vieira L, Kaplowitz E, Overbey JR, Johnson S, Paul K, Lookstein R, Rebarber A, Fox NS, Stone J. Elective fetal reduction by radiofrequency ablation in monochorionic diamniotic twins decreases adverse outcomes compared to ongoing monochorionic diamniotic twins. Am J Obstet Gynecol MFM 2021; 3:100447. [PMID: 34314851 DOI: 10.1016/j.ajogmf.2021.100447] [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: 05/16/2021] [Revised: 07/08/2021] [Accepted: 07/20/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND Multifetal pregnancy reduction is a technique used to reduce the fetal number to mitigate the risks of adverse outcomes associated with multiple gestations. Monochorionic diamniotic twin pregnancies are subject to unique complications, contributing to adverse pregnancy outcomes. Thus, patients have an option to electively reduce 1 fetus to improve outcomes. OBJECTIVE This study aimed to compare outcomes of elective reduction of monochorionic diamniotic twins by radiofrequency ablation to planned ongoing monochorionic diamniotic twins. STUDY DESIGN We performed a retrospective review of 315 monochorionic diamniotic twin gestations that underwent first-trimester ultrasound within 1 institution. Planned electively reduced twins were compared with ongoing monochorionic diamniotic twins. All reductions were performed via radiofrequency ablation of the cord insertion site into the fetal abdomen. The primary outcome was preterm birth at <36 weeks' gestation. Secondary outcomes included gestational age at delivery; preterm birth at less than 37-, 34-, 32-, and 28-weeks' gestation; unintended loss; and adverse perinatal outcomes. RESULTS Among 315 monochorionic diamniotic pregnancies, 14 (4.4%) underwent elective multifetal pregnancy reduction, and 301 (95.6%) were planned ongoing twins. The mean gestational age of radiofrequency ablation in the elective multifetal pregnancy reduction group was 15.1±0.68 weeks. Patients who underwent elective multifetal pregnancy reduction had significantly higher maternal age (P<.01) and were more likely to be Asian (P<.01). Moreover, they were more likely to have undergone in vitro fertilization (P=.03) and chorionic villus sampling (P<.01). There was a significantly higher rate of term deliveries in the elective radiofrequency ablation group compared with ongoing twins (gestational age, 38 weeks [interquartile range, 36.1-39.1] vs 35.9 weeks [interquartile range, 34.0-36.9]; P<.01). Patients with ongoing pregnancies had a trend of increased rate of preterm birth at <36 weeks' gestation (odds ratio, 3.4; 95% confidence interval, 1.0-12.0; P=.06), a significantly increased risk of preterm birth at <37 weeks' gestation (odds ratio, 8.0; 95% confidence interval, 2.4-26.4; P<.01), and no difference at less than 34-, 32-, or 28- weeks' gestation. All patients who underwent elective radiofrequency ablation had successful pregnancies with no pregnancy losses or terminations. Of ongoing gestations, 36 required procedures, including 16 (5.3%) medically indicated radiofrequency ablation, 14 (4.6%) laser ablation, and 6 (1.9%) amnioreductions. Furthermore, 22 patients (7.3%) with planned ongoing twins had total pregnancy loss at <24 weeks' gestation. Notably, 12 patients (4.0%) had unintended loss of 1 fetus before 24 weeks' gestation in the ongoing pregnancy cohort, and 12 patients (4.0%) had unintended loss of both fetuses before 24 weeks' gestation. Moreover, 5 patients (1.7%) in the ongoing pregnancy group had intrauterine fetal demise at >24 weeks' gestation and 10 patients (3.3%) electively terminated both fetuses. There was no significant difference in loss rates between the 2 groups. CONCLUSION In this study of monochorionic diamniotic twins, patients who elected to undergo multifetal pregnancy reduction had significantly lower rates of preterm birth at <37 weeks and a lower trend of preterm birth at <36 weeks' gestation without an increased risk of pregnancy loss. Median gestational age at delivery was significantly higher in the elective multifetal pregnancy reduction group (38 weeks) than in the ongoing pregnancy group (35.9 weeks). Further research is needed to clarify if multifetal pregnancy reduction improves long-term outcomes.
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Affiliation(s)
- Manasa G Rao
- Departments of Obstetrics, Gynecology, and Reproductive Science (Ms Rao, Drs Vieira and Johnson, Ms Paul, and Drs Lookstein, Rebarber, Fox, and Stone).
| | - Luciana Vieira
- Departments of Obstetrics, Gynecology, and Reproductive Science (Ms Rao, Drs Vieira and Johnson, Ms Paul, and Drs Lookstein, Rebarber, Fox, and Stone)
| | - Elianna Kaplowitz
- Population Health Science and Policy (Ms Kaplowitz and Dr Overbey), Icahn School of Medicine at Mount Sinai, New York, NY
| | - Jessica R Overbey
- Population Health Science and Policy (Ms Kaplowitz and Dr Overbey), Icahn School of Medicine at Mount Sinai, New York, NY
| | - Shaelyn Johnson
- Departments of Obstetrics, Gynecology, and Reproductive Science (Ms Rao, Drs Vieira and Johnson, Ms Paul, and Drs Lookstein, Rebarber, Fox, and Stone)
| | - Keisha Paul
- Departments of Obstetrics, Gynecology, and Reproductive Science (Ms Rao, Drs Vieira and Johnson, Ms Paul, and Drs Lookstein, Rebarber, Fox, and Stone)
| | - Robert Lookstein
- Departments of Obstetrics, Gynecology, and Reproductive Science (Ms Rao, Drs Vieira and Johnson, Ms Paul, and Drs Lookstein, Rebarber, Fox, and Stone)
| | - Andrei Rebarber
- Departments of Obstetrics, Gynecology, and Reproductive Science (Ms Rao, Drs Vieira and Johnson, Ms Paul, and Drs Lookstein, Rebarber, Fox, and Stone)
| | - Nathan S Fox
- Departments of Obstetrics, Gynecology, and Reproductive Science (Ms Rao, Drs Vieira and Johnson, Ms Paul, and Drs Lookstein, Rebarber, Fox, and Stone)
| | - Joanne Stone
- Departments of Obstetrics, Gynecology, and Reproductive Science (Ms Rao, Drs Vieira and Johnson, Ms Paul, and Drs Lookstein, Rebarber, Fox, and Stone)
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Sobhani NC, Sparks TN, Gosnell KA, Rand L, Gonzalez JM, Feldstein VA. Outcomes of Monochorionic, Diamniotic Twin Pregnancies with Prenatally Diagnosed Intertwin Weight Discordance. Am J Perinatol 2021; 38:649-656. [PMID: 33321536 PMCID: PMC8164970 DOI: 10.1055/s-0040-1721697] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
OBJECTIVE Monochorionic, diamniotic (MCDA) twin pairs are predisposed to various pregnancy complications due to the unique placental angioarchitecture of monochorionicity. Few studies have evaluated the outcomes of weight-discordant MCDA pairs without selective fetal growth restriction (SFGR) or the risk factors for development of SFGR. This study aims to describe the natural history of expectant, noninvasive management of weight-discordant MCDA twins and to evaluate risk factors associated with progression to SFGR. STUDY DESIGN This was a retrospective cohort study at a single, tertiary care center in the United States. All MCDA twins with isolated intertwin weight discordance (ITWD) ≥ 20% diagnosed before 26 weeks' gestational age (GA) were included. The primary outcome of descriptive analyses was overall pregnancy outcome, incorporating both survival to delivery and GA at delivery, as defined by the North American Fetal Therapy Network. The secondary outcome was SFGR in one twin (defined as estimated fetal weight < 10% for GA) and factors associated with this progression. Only those with fetal ultrasound (US) within 4 weeks of delivery were included in this secondary analysis. RESULTS Among 73 MCDA pairs with ITWD, 73% had a good pregnancy outcome, with dual live delivery at a median GA of 33 weeks. Among the 34 pairs with adequate US follow-up, 56% developed SFGR. There were no differences in GA at delivery or discordance at birth between those who did and those who did not develop SFGR. There was a nonsignificant association between increasing ITWD at diagnosis and subsequent development of SFGR. CONCLUSION Expectant, noninvasive management can be considered in MCDA twin pregnancies with ITWD ≥ 20% diagnosed before 26 weeks. This approach is associated with a good pregnancy outcome in the majority of cases, even after the development of SFGR in the smaller twin. KEY POINTS · Nearly 75% of weight-discordant mo/di twins have a good pregnancy outcome.. · Weight-discordant mo/di twins deliver at a mean gestational age of 33 weeks without invasive therapy.. · Noninvasive management should be considered for weight-discordant mo/di twins..
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Affiliation(s)
- Nasim C. Sobhani
- Division of Maternal-Fetal Medicine, Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California San Francisco, San Francisco, California
| | - Teresa N. Sparks
- Division of Maternal-Fetal Medicine, Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California San Francisco, San Francisco, California,Fetal Treatment Center, University of California San Francisco, San Francisco, California
| | - Kristen A. Gosnell
- Fetal Treatment Center, University of California San Francisco, San Francisco, California
| | - Larry Rand
- Division of Maternal-Fetal Medicine, Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California San Francisco, San Francisco, California,Fetal Treatment Center, University of California San Francisco, San Francisco, California
| | - Juan M. Gonzalez
- Division of Maternal-Fetal Medicine, Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California San Francisco, San Francisco, California,Fetal Treatment Center, University of California San Francisco, San Francisco, California
| | - Vickie A. Feldstein
- Division of Maternal-Fetal Medicine, Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California San Francisco, San Francisco, California,Fetal Treatment Center, University of California San Francisco, San Francisco, California,Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California
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Gabby LC, Chon AH, Korst LM, Llanes A, Miller DA, Chmait RH. Survival Outcomes by Fetal Weight Discordance after Laser Surgery for Twin-Twin Transfusion Syndrome Complicated by Donor Fetal Growth Restriction. Fetal Diagn Ther 2020; 47:800-809. [PMID: 32739914 DOI: 10.1159/000509032] [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: 09/05/2019] [Accepted: 05/26/2020] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Management options for treatment of twin-twin transfusion syndrome (TTTS) with severe donor intrauterine growth restriction (IUGR) include fetoscopic laser surgery and umbilical cord occlusion (UCO). We studied perinatal survival outcomes in this select group after laser surgery, stratifying patients by preoperative estimated fetal weight (EFW) discordance. METHODS In this retrospective study of monochorionic diamniotic twin gestations with TTTS and selective donor IUGR who underwent laser surgery (2006-2017), preoperative EFW discordance was calculated ([(larger twin - smaller twin)/(larger twin)] × 100) and cases were divided into discordance strata. Severe EFW discordance was defined as >35%. The primary outcome was 30-day donor twin neonatal survival. RESULTS The 371 cases were distributed by discordance strata: ≤20% (74 [19.9%]), 21-25% (49 [13.2%]), 26-30% (68 [18.3%]), 31-35% (53 [14.3%]), 36-40% (51 [13.7%]), 41-45% (38 [10.2%]), >45% (38 [10.2%]). Donor 30-day survival declined as the discordance strata increased: 86.5, 85.7, 83.8, 75.5, 64.7, 63.2, and 65.8% (p = 0.0046); 30-day survival was inversely associated with severe discordance (>35%) (64.6 vs. 83.2%, p < 0.0001). DISCUSSION In TTTS cases complicated by donor IUGR with severe growth discordance, laser surgery was associated with donor survivorship greater than 60% suggesting that, in this setting, laser surgery remains a reasonable alternative treatment to UCO.
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Affiliation(s)
- Lauryn C Gabby
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Andrew H Chon
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Lisa M Korst
- Childbirth Research Associates, North Hollywood, California, USA
| | - Arlyn Llanes
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - David A Miller
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Ramen H Chmait
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA,
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Quintero R, Kontopoulos E, Williams ME, Sloop J, Vanderbilt D, Chmait RH. Neurodevelopmental outcome of monochorionic twins with selective intrauterine growth restriction (SIUGR) type II: laser versus expectant management. J Matern Fetal Neonatal Med 2019; 34:1513-1521. [DOI: 10.1080/14767058.2019.1638902] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Ruben Quintero
- USFetus Research Consortium, Miami, FL, USA
- Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, Florida International University, Herbert Wertheim School of Medicine, Miami, FL, USA
| | - Eftichia Kontopoulos
- USFetus Research Consortium, Miami, FL, USA
- Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, Florida International University, Herbert Wertheim School of Medicine, Miami, FL, USA
| | - Marian E. Williams
- Children’s Hospital Los Angeles University Center for Excellence in Developmental Disabilities, University of Southern California, Los Angeles, CA, USA
| | - Judy Sloop
- JSloop Consulting, LLC, Boynton Beach, FL, USA
| | - Douglas Vanderbilt
- Department of Pediatrics, Division of General Pediatrics, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Ramen H. Chmait
- USFetus Research Consortium, Miami, FL, USA
- Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, Keck School of Medicine of the University of Southern California, Los Angeles, CA, USA
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Perry H, Duffy JMN, Umadia O, Khalil A. Outcome reporting across randomized trials and observational studies evaluating treatments for twin-twin transfusion syndrome: systematic review. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2018; 52:577-585. [PMID: 29607558 DOI: 10.1002/uog.19068] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 03/19/2018] [Accepted: 03/27/2018] [Indexed: 06/08/2023]
Abstract
OBJECTIVE Twin-twin transfusion syndrome (TTTS) is associated with significant mortality and morbidity. Potential treatments for the condition require robust evaluation. The aim of this study was to evaluate outcome reporting across observational studies and randomized controlled trials assessing treatments for TTTS. METHODS Cochrane Central Register of Controlled Trials, EMBASE and MEDLINE were searched from inception to August 2016. Observational studies and randomized controlled trials reporting outcome following treatment for TTTS in monochorionic-diamniotic twin pregnancy and monochorionic-triamniotic or dichorionic-triamniotic triplet pregnancy were included. Outcome reporting was systematically extracted and categorized. RESULTS Six randomized trials and 94 observational studies were included, reporting data from 20 071 maternal participants and 3199 children. Six different treatments were evaluated. Included studies reported 62 different outcomes, including six fetal, seven offspring mortality, 25 neonatal, six early childhood and 18 maternal/operative outcomes. Outcomes were reported inconsistently across trials. For example, when considering offspring mortality, 31 (31%) studies reported live birth, 31 (31%) reported intrauterine death, 49 (49%) reported neonatal mortality and 17 (17%) reported perinatal mortality. Four (4%) studies reported respiratory distress syndrome. Only 19 (19%) studies were designed for long-term follow-up and 11 (11%) of these reported cerebral palsy. CONCLUSIONS Studies evaluating treatments for TTTS have often neglected to report clinically important outcomes, especially neonatal morbidity outcomes, and most are not designed for long-term follow-up. The development of a core outcome set could help standardize outcome collection and reporting in TTTS studies. Copyright © 2018 ISUOG. Published by John Wiley & Sons Ltd.
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Affiliation(s)
- H Perry
- Vascular Biology Research Centre, Molecular and Clinical Sciences Research Institute, St George's University of London, London, UK
- Fetal Medicine Unit, St George's University Hospitals NHS Foundation Trust, University of London, London, UK
| | - J M N Duffy
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Radcliffe Observatory Quarter, Oxford, UK
- Balliol College, University of Oxford, Oxford, UK
| | - O Umadia
- Fetal Medicine Unit, St George's University Hospitals NHS Foundation Trust, University of London, London, UK
| | - A Khalil
- Vascular Biology Research Centre, Molecular and Clinical Sciences Research Institute, St George's University of London, London, UK
- Fetal Medicine Unit, St George's University Hospitals NHS Foundation Trust, University of London, London, UK
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Hecher K, Gardiner HM, Diemert A, Bartmann P. Long-term outcomes for monochorionic twins after laser therapy in twin-to-twin transfusion syndrome. THE LANCET CHILD & ADOLESCENT HEALTH 2018; 2:525-535. [PMID: 30169324 DOI: 10.1016/s2352-4642(18)30127-5] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 03/09/2018] [Accepted: 04/03/2018] [Indexed: 12/28/2022]
Abstract
Twin-to-twin transfusion syndrome typically occurs in the second trimester in 10-15% of monochorionic twin pregnancies. Vascular anastomoses of monochorionic placentae are the underlying cause of the development of the syndrome. If a blood flow imbalance occurs, one fetus becomes the so-called donor twin and the other the recipient. If untreated, perinatal mortality is 80-90%. Fetoscopic laser coagulation of the vascular anastomoses destroys the cause of the syndrome and leads to dual twin survival rates of around 70% and more than 90% of pregnancies with at least one survivor. However, unequal placental sharing, intrauterine death, and severe prematurity are still limiting factors for further improvement of survival rates and decreases in long-term morbidity. Prematurity and neurodevelopmental impairment affect the donor and recipient twins, whereas cardiovascular failure and obstruction of the right ventricular outflow tract are typical complications of recipients, which can lead to long-term morbidity. In this Review, we summarise the literature on follow-up data for survivors of twin-to-twin-transfusion syndrome after laser therapy, including neurodevelopmental outcomes, cardiovascular outcomes, growth, renal function, and ischaemic events, as well as the potential effects of intrauterine programming on later life.
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Affiliation(s)
- Kurt Hecher
- Department of Obstetrics and Fetal Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
| | - Helena M Gardiner
- Fetal Center at Children's Memorial Herman Hospital, McGovern Medical School at UTHealth, University of Texas Health Sciences Center, Houston, TX, USA
| | - Anke Diemert
- Department of Obstetrics and Fetal Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Peter Bartmann
- Children's Hospital, University Hospital Bonn, Bonn, Germany
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Cambiaso O, Zhao DP, Abasolo JI, Aiello HA, Oepkes D, Lopriore E, Otaño L. Discordance of cord insertions as a predictor of discordant fetal growth in monochorionic twins. Placenta 2016; 47:81-85. [PMID: 27780543 DOI: 10.1016/j.placenta.2016.09.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Revised: 09/13/2016] [Accepted: 09/14/2016] [Indexed: 02/07/2023]
Abstract
INTRODUCTION The type of cord insertion within monochorionic twin pairs could be different. The purpose of study is to evaluate the association of different combinations of placental umbilical cord insertions with birth weight discordance in a large cohort of monochorionic twins. METHODS All consecutive monochorionic placentas from either uncomplicated twin pregnancies or with fetal weight discordance examined and injected with color dye at our centers were included in this study (n = 374). Marginal or velamentous cord insertions were defined as abnormal. Placentas were categorized as concordant when the cord insertions of both fetuses were either normal-normal or abnormal-abnormal, and as discordant when they were normal-abnormal. Birth weight discordance was defined as a difference in birth weight of each twin ≥25%. The association of different cord insertion combinations with birth weight discordance was analyzed. RESULTS The rate of discordant cord insertions was 55% (204/374) in monochorionic twins. A highly significant association between discordant cord insertions and discordant birth weight was observed (p < 0.01). The odds ratios (OR) for birth weight discordance in the discordant cord insertion group compared with the concordant group were 2.3 (95% CI: 1.2-4.4) for the normal-marginal and 5.9 (95% CI: 3.8-10.4) for the normal-velamentous cord insertion subgroup. Discordant cord insertions are associated with the occurrence of unequal placental sharing (OR 4.3, 95%CI 2.7-6.9). DISCUSSION Discordance of cord insertions is associated with discordance of birth weight and may therefore be an important indicator of adverse outcome in monochorionic twins.
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Affiliation(s)
| | - De-Peng Zhao
- Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China; Leiden University Medical Center, Leiden, Netherlands.
| | - Jose I Abasolo
- Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| | | | - Dick Oepkes
- Leiden University Medical Center, Leiden, Netherlands
| | | | - Lucas Otaño
- Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
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Van Winden KR, Quintero RA, Kontopoulos EV, Korst LM, Llanes A, Chmait RH. Decreased Total Placental Mass Found in Twin-Twin Transfusion Syndrome Gestations with Selective Growth Restriction. Fetal Diagn Ther 2016; 40:116-22. [DOI: 10.1159/000442153] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Accepted: 10/30/2015] [Indexed: 11/19/2022]
Abstract
Introduction: We examined placental weight characteristics associated with donor selective intrauterine growth restriction (SIUGR) among patients with twin-twin transfusion syndrome (TTTS) who underwent laser surgery. Materials and Methods: Fresh placental specimens were studied. Pregnancies with higher-order multiples, fetal demise, or disrupted or nonsubmitted placental specimens were excluded. Placental characteristics prospectively collected included total placental weight, individual placental weight, and placental share. Data were compared between pregnancies with SIUGR (TTTS + SIUGR group) and those without SIUGR (TTTS-only group). Results: Of 369 consecutive patients who underwent laser surgery for TTTS, 155 (42%) met inclusion criteria: 91 with TTTS + SIUGR and 64 with TTTS-only. Compared to the TTTS-only group, patients in the TTTS + SIUGR group had a lower total placental weight (608 ± 163 vs. 687 ± 224 g, p = 0.012), with a lower donor individual placental weight (237 ± 91 vs. 291 ± 124 g, p = 0.002), but no apparent difference in the individual placental weight of recipient twins (371 ± 109 vs. 396 ± 133 g, p = 0.211). Donor placental share was smaller in those pregnancies affected by SIUGR (38.7 ± 9.6 vs. 42.3 ± 9.8%, p = 0.029). Discussion: TTTS patients with SIUGR had a lower total placental weight and a lower donor individual placental weight compared to those without SIUGR. These findings suggest that differences in donor individual placental weights for SIUGR gestations may not solely be related to differences in placental share.
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Chmait RH, Chon AH, Schrager SM, Kontopoulos EV, Quintero RA, Vanderbilt DL. Donor catch-up growth after laser surgery for twin-twin transfusion syndrome. Early Hum Dev 2015; 91:751-4. [PMID: 26364515 PMCID: PMC8369892 DOI: 10.1016/j.earlhumdev.2015.08.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 07/03/2015] [Accepted: 08/21/2015] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To assess fetal growth after laser surgery for TTTS at the time of prenatal diagnosis, birth, and at 2years of age. DESIGN/METHODS Growth data were collected from surviving children treated between 2007 and 2010 as part of a study to assess neurodevelopment at 24months (±6weeks) corrected age. Fetal weights were obtained via ultrasound using Hadlock's formula at the time of preoperative assessment for laser surgery. Birth weights were recorded by the staff at the delivering institutions. Weights at 2years corrected age were recorded at the time of neurodevelopmental testing. Weights were converted into percentiles according to standard growth curves. Growth restriction was defined as <10th percentile for given age. Multilevel latent growth curve models in Mplus (twins nested in families) examined weight change over time as a function of donor status, and repeated measures ANOVA was utilized to assess in donor-recipient weight discordance over time for twin pairs. RESULTS 99 of 206 children (56 of 130 families) were studied. There were no differences between enrolled and non-enrolled patients in donor/recipient status and survival rates, fetal demise, intrauterine growth restriction, Quintero stage, and gestational age of surgery or delivery. 48.5% were donors. The median fetal, birth, and 2-year weights for all twins were 288g, 1.9kg, and 11.8kg, respectively, and the overall prevalence of growth restriction was 28%, 22%, and 3%, respectively. Growth restriction rates at prenatal diagnosis were 56% in donors vs. 2% in recipients (OR=64.3, p<0.001); at birth, 35% vs. 10% (OR=5.0, p<0.01); and at 2years, 6% vs. 0%. Donors showed significant gains in weight percentile (B=13.1, p<0.001) and a significant decrease in growth restriction rates over time (B=-1.6, p<0.001). Weight discordance between donor and recipient pairs also significantly decreased over time (linear F(1,42)=54.34, p<0.001). CONCLUSIONS After laser surgery for TTTS, donor twins exhibit significant catch-up growth by two years of age.
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Affiliation(s)
- Ramen H. Chmait
- Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, Keck School of Medicine, University of Southern California, United States,Corresponding author at: Keck School of Medicine, University of Southern California, 1300 North Vermont Avenue, Suite 710, Los Angeles, CA 90027, United States. Tel.:+1 323 361 6074; fax: +1 323 361 6099. (R.H. Chmait)
| | - Andrew H. Chon
- Department of Obstetrics and Gynecology, Kaiser Permanente Los Angeles, CA, United States
| | - Sheree M. Schrager
- Division of Hospital Medicine, Children’s Hospital Los Angeles, United States
| | | | - Rubén A. Quintero
- Jackson Fetal Therapy Institute, Jackson Memorial Hospital, Miami, FL, United States
| | - Douglas L. Vanderbilt
- Department of Pediatrics, Division of General Pediatrics, Keck School of Medicine, University of Southern California, United States
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Kawamura H, Ishii K, Yonetani N, Mabuchi A, Hayashi S, Mitsuda N. Significance of chorionicity on long-term outcome of low birthweight infants of <1500g in twin pregnancies. J Obstet Gynaecol Res 2015; 41:1185-92. [DOI: 10.1111/jog.12703] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Revised: 01/08/2015] [Accepted: 01/30/2015] [Indexed: 11/30/2022]
Affiliation(s)
- Hiroshi Kawamura
- Department of Maternal Fetal Medicine; Osaka Medical Center and Research Institute for Maternal and Child Health; Osaka Japan
| | - Keisuke Ishii
- Department of Maternal Fetal Medicine; Osaka Medical Center and Research Institute for Maternal and Child Health; Osaka Japan
| | - Naoto Yonetani
- Department of Maternal Fetal Medicine; Osaka Medical Center and Research Institute for Maternal and Child Health; Osaka Japan
| | - Aki Mabuchi
- Department of Maternal Fetal Medicine; Osaka Medical Center and Research Institute for Maternal and Child Health; Osaka Japan
| | - Shusaku Hayashi
- Department of Maternal Fetal Medicine; Osaka Medical Center and Research Institute for Maternal and Child Health; Osaka Japan
| | - Nobuaki Mitsuda
- Department of Maternal Fetal Medicine; Osaka Medical Center and Research Institute for Maternal and Child Health; Osaka Japan
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Argoti PS, Papanna R, Bebbington MW, Kahlek N, Baschat A, Johnson A, Moise KJ. Outcome of fetoscopic laser ablation for twin-to-twin transfusion syndrome in dichorionic-triamniotic triplets compared with monochorionic-diamniotic twins. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2014; 44:545-549. [PMID: 24659447 DOI: 10.1002/uog.13369] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Revised: 12/23/2013] [Accepted: 01/10/2014] [Indexed: 06/03/2023]
Abstract
OBJECTIVE To compare outcome of dichorionic-triamniotic (DCTA) triplet gestations with that of a paired cohort of monochorionic-diamniotic (MCDA) twin gestations undergoing laser therapy for treatment of twin-to-twin transfusion syndrome (TTTS). METHODS All DCTA triplets treated at four referral centers between specified dates were included. A matched cohort group of MCDA twin gestations affected by TTTS was used for comparison. RESULTS Sixteen sets of DCTA triplets treated with laser photocoagulation of placental anastomoses were compared with 32 matched sets of MCDA twins. All of the 'singleton' fetuses in the triplet gestations survived to birth and to the end of the neonatal period. There were no differences in single or double survival or the rate of non-survivors to birth and at age 28 days. A mean 3-week difference was found in the procedure-to-delivery interval in DCTA triplets vs MCDA twins (60 ± 35.8 days vs 83.6 ± 33.2 days; P = 0.029). A mean difference of 3 weeks was also found in the gestational age at delivery in DCTA triplets vs MCDA twins (28.5 ± 3.5 weeks vs 31.9 ± 5 weeks; P = 0.024). A similar post-laser fetal growth pattern in donors and recipients of both groups was noted. CONCLUSIONS DCTA triplet gestations with TTTS have a similar rate of post-laser survival but deliver earlier than can be expected for twins treated with laser. These findings have potential implications for the risk of prematurity and long-term outcomes.
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Affiliation(s)
- P S Argoti
- Department of Obstetrics, Gynecology and Reproductive Medicine, Division of Maternal-Fetal Medicine, UT Health - School of Medicine at Houston, The Texas Fetal Center, Children's Memorial Hermann Hospital, Houston, TX, USA
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Van Winden KR, Quintero RA, Kontopoulos EV, Korst LM, Llanes A, Chmait RH. Perinatal survival in cases of twin–twin transfusion syndrome complicated by selective intrauterine growth restriction. J Matern Fetal Neonatal Med 2014; 28:1549-53. [DOI: 10.3109/14767058.2014.960834] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Chang YL, Chang SD. Fetoscopic Laser Therapy for Twin-Twin Transfusion Syndrome. CURRENT OBSTETRICS AND GYNECOLOGY REPORTS 2013. [DOI: 10.1007/s13669-013-0062-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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20
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Marsit CJ, Koestler DC, Watson-Smith D, Boney CM, Padbury JF, Luks F. Developmental genes targeted for epigenetic variation between twin-twin transfusion syndrome children. Clin Epigenetics 2013; 5:18. [PMID: 24090360 PMCID: PMC4016001 DOI: 10.1186/1868-7083-5-18] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Accepted: 09/03/2013] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Epigenetic mechanisms are thought to be critical in mediating the role of the intrauterine environment on lifelong health and disease. Twin-twin transfusion syndrome (TTTS) is a rare condition wherein fetuses share the placenta and develop vascular anastomoses, which allow blood to flow between the fetuses. The unequal flow results in reciprocal hypo- and hypervolemia in the affected twins, striking growth differences and physiologic adaptations in response to this significant stressor. The donor twin in the TTTS syndrome can be profoundly growth restricted and there is likely a nutritional imbalance between the twins. The consequences of TTTS on fetal programming are unknown. This condition can now be effectively treated through the use of fetal laparoscopic procedures, but the potential for lifelong morbidity related to this condition during development is apparent. As this condition and the resulting uteroplacental discordance can play a role in the epigenetic process, we sought to investigate the DNA methylation profiles of childhood survivors of TTTS (n = 14). We focused on differences in both global measures and genome-wide CpG specific DNA methylation between donor and recipient children in this pilot study in order to generate hypotheses for further research. RESULTS We identified significant hypomethylation of the LINE1 repetitive element in the peripheral blood of donor children and subtle variation in the genome-wide profiles of CpG specific methylation most prominent at CpG sites which are targets for polycomb group repressive complexes. CONCLUSIONS These preliminary results suggest that coordinated epigenetic alterations result from the intrauterine environment experienced by infants with TTTS and may, at least in part, be responsible for downstream health conditions experienced by individuals surviving this condition.
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Affiliation(s)
- Carmen J Marsit
- Department of Pharmacology and Toxicology, Geisel Medical School at Dartmouth, Hanover, NH 03755, USA.
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Lewi L, Deprest J, Hecher K. The vascular anastomoses in monochorionic twin pregnancies and their clinical consequences. Am J Obstet Gynecol 2013; 208:19-30. [PMID: 23103301 DOI: 10.1016/j.ajog.2012.09.025] [Citation(s) in RCA: 162] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2012] [Revised: 09/10/2012] [Accepted: 09/21/2012] [Indexed: 11/18/2022]
Abstract
Monochorionic twin pregnancies are at increased risk of adverse outcome because of the vascular anastomoses that connect the 2 fetal circulation systems. The shared circulation is responsible for some unique complications in monochorionic twins, such as the twin-to-twin transfusion syndrome, the twin anemia polycythemia sequence, the twin reversed arterial perfusion sequence, and monoamniotic twinning. Another consequence of the shared circulation is that the well-being of one twin critically depends on that of the other. In this review, we will describe the technique of placental injection. Further, we will discuss the role of the vascular anastomoses in each of the complications described above and provide an update on their management.
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Role of low placental share in twin–twin transfusion syndrome complicated by intrauterine growth restriction. Placenta 2011; 32:616-8. [DOI: 10.1016/j.placenta.2011.05.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2011] [Revised: 05/19/2011] [Accepted: 05/22/2011] [Indexed: 11/17/2022]
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Maschke C, Diemert A, Hecher K, Bartmann P. Long-term outcome after intrauterine laser treatment for twin-twin transfusion syndrome. Prenat Diagn 2011; 31:647-53. [PMID: 21660996 DOI: 10.1002/pd.2797] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2011] [Revised: 05/04/2011] [Accepted: 05/04/2011] [Indexed: 11/08/2022]
Abstract
Twin-twin transfusion syndrome (TTTS) is a severe complication occurring in about 10% of monochorionic twin pregnancies. The chronic unbalanced transfusion of blood across placental vascular communications from the donor to the recipient twin may lead to impairment of various organ systems in the affected twins. In Hamburg, Germany, since 1995 patients with TTTS were treated with fetoscopic laser coagulation as the first causal therapeutic strategy. All survivors after laser surgery were followed up in the University Children's Hospital in Bonn, Germany. In this article, we summarize long-term follow-up studies from our German study population and compare our results with data from the literature.
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Affiliation(s)
- Cornelia Maschke
- Department of Neonatology, University Childrens' Hospital, Bonn, Germany.
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Specific complications of monochorionic twin pregnancies: twin-twin transfusion syndrome and twin reversed arterial perfusion sequence. Semin Fetal Neonatal Med 2010; 15:349-56. [PMID: 20855238 DOI: 10.1016/j.siny.2010.09.003] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Monochorionic twins are subjected to specific complications which originate in either imbalance or abnormality of the single placenta serving two twins. This unequal placental sharing can cause complications including twin-twin transfusion syndrome (TTTS), twin anemia-polycythemia sequence (TAPS), selective intrauterine growth restriction or twin reversed arterial perfusion sequence (TRAP). Monochorionicity also makes the management of these specific complications as well as that of a severe malformation in one twin hazardous since the spontaneous death of one twin exposes the co-twin to a risk of exsanguination into the dead twin and its placenta. The latter is responsible for the death of the co-twin in up to 20% of the cases and in ischemic sequelae in about the same proportions in the survivors. Although the symptoms of all these complications are very different, the keystone of their management comes down to either surgical destruction of the inter-twin anastomoses on the chorionic plate when aiming at dual survival or selective and permanent occlusion of the cord of a severely affected twin aiming at protecting the normal co-twin. This can be best achieved by fetoscopic selective laser coagulation and bipolar forceps cord coagulation respectively.
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