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Kim O, Hong S, Park IY, Ko HS. Association between placental location and cord insertion site with pre-eclampsia: a retrospective cohort study. J Matern Fetal Neonatal Med 2024; 37:2306189. [PMID: 38272651 DOI: 10.1080/14767058.2024.2306189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Accepted: 01/11/2024] [Indexed: 01/27/2024]
Abstract
OBJECTIVE The relationship between placental location in pregnancies without previa and adverse pregnancy outcomes has not been well studied. Additionally, the impact of abnormal cord insertion sites remains controversial. Therefore, the objective of this study was to explore the adverse outcomes associated with placental location and abnormal cord insertion in nulliparous women and to assess their impact on pregnancy outcomes. METHODS This retrospective cohort study was conducted at a single tertiary hospital between January 2019 and June 2022. The study included nulliparous women with singleton pregnancies who delivered live infants and had available data on placental location and umbilical cord insertion site from a second- or third-trimester ultrasound. Placental location was categorized as anterior or posterior using transabdominal ultrasonography. The association between placental location/cord insertion site and pre-eclampsia was evaluated using multivariate logistic regression analysis. We compared the area under the curve to evaluate the impact of placental location and cord insertion site on pre-eclampsia. RESULTS A total of 2219 pregnancies were included in the study. Pre-eclampsia occurred significantly more frequently in the anterior group than in the posterior group (8.21% vs. 3.04%, p < .001). In multivariate analysis investigating the association between placental location and pre-eclampsia, anterior placenta and marginal cord insertion showed increased odds ratios for pre-eclampsia of 3.05 (95% confidence interval [CI] 1.68-6.58) and 3.64 (95% CI 1.90-6.97), respectively. Receiver operating characteristic (ROC) curves were constructed to predict pre-eclampsia using independent factors from multivariate analyses. Model I, including maternal age, pre-pregnancy body mass index, in vitro fertilization, chronic hypertension, overt diabetes, kidney disease, and hematologic diseases, achieved an area under the ROC curve of 0.70 (95% CI 0.65-0.75). Adding cord insertion site and placental location to the model (Model II) improved its predictive performance, resulting in an area under the ROC curve of 0.749 (95% CI 0.70-0.79, p = .02). CONCLUSIONS Anterior placenta and marginal cord insertion were associated with an increased risk of pre-eclampsia. Further studies on prospective cohorts are necessary to validate these findings.
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Affiliation(s)
- Oyoung Kim
- Department of Obstetrics and Gynecology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Subeen Hong
- Department of Obstetrics and Gynecology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - In Yang Park
- Department of Obstetrics and Gynecology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hyun Sun Ko
- Department of Obstetrics and Gynecology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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Siargkas A, Tsakiridis I, Pachi C, Mamopoulos A, Athanasiadis A, Dagklis T. Impact of velamentous cord insertion on perinatal outcomes: a systematic review and meta-analysis. Am J Obstet Gynecol MFM 2023; 5:100812. [PMID: 36379439 DOI: 10.1016/j.ajogmf.2022.100812] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 10/14/2022] [Accepted: 11/09/2022] [Indexed: 11/14/2022]
Abstract
OBJECTIVE Velamentous cord insertion may be identified prenatally, but the clinical implications of this diagnosis remain controversial. This meta-analysis aimed to quantitatively summarize current data on the association of velamentous cord insertion and adverse perinatal outcomes. DATA SOURCES A systematic search was performed in MEDLINE, Scopus, and the Cochrane Library from inception until May 22, 2022 to identify eligible studies. STUDY ELIGIBILITY CRITERIA Observational studies including singleton pregnancies with velamentous cord insertion, either prenatally or postnatally identified, and comparing them with those with central/eccentric cord insertion were considered eligible. METHODS The quality of the studies was assessed with the Newcastle-Ottawa scale and the risk of bias with the Quality In Prognosis Studies (QUIPS) tool. The main outcome was small-for-gestational-age neonates. Heterogeneity of the studies was evaluated using a Q test and an I2 index. Analyses were performed using a random-effects model, with outcome data reported as relative risk or mean difference with 95% confidence interval. RESULTS In total, 9 cohort and 2 case-control studies, of which 4 had prenatal and 7 had postnatal velamentous cord insertion diagnosis, were included. The overall prevalence of velamentous cord insertion was estimated to be 1.4% among singleton pregnancies. Compared with the central/eccentric cord insertion control group, pregnancies with velamentous cord insertion were at higher risk of several adverse perinatal outcomes, namely small-for-gestational-age neonates (relative risk, 1.93; 95% confidence interval, 1.54-2.41), preeclampsia (relative risk, 1.85; 95% confidence interval, 1.01-3.39), pregnancy-induced hypertension (relative risk, 1.58; 95% confidence interval, 1.46-1.70), stillbirth (relative risk, 4.12; 95% confidence interval, 1.92-8.87), placental abruption (relative risk, 2.94; 95% confidence interval, 1.72-5.03), preterm delivery (relative risk, 2.14; 95% confidence interval, 1.73-2.65), emergency cesarean delivery (relative risk, 2.03; 95% confidence interval, 1.22-3.38), 1-minute Apgar score <7 (relative risk, 1.53; 95% confidence interval, 1.14-2.05), 5-minute Apgar score <7 (relative risk, 1.97; 95% confidence interval, 1.43-2.71), and neonatal intensive care unit admission (relative risk, 1.63; 95% confidence interval, 1.32-2.02). In a subgroup analysis, prenatally diagnosed velamentous cord insertion was associated with small-for-gestational-age neonates (relative risk, 1.66; 95% confidence interval, 1.19-2.32), stillbirth (relative risk, 4.78; 95% confidence interval, 1.42-16.08), and preterm delivery (relative risk, 2.69; 95% confidence interval, 2.01-3.60). In a sensitivity analysis of studies excluding cases with vasa previa, velamentous cord insertion was associated with an increased risk of small-for-gestational-age neonates (relative risk, 2.69; 95% confidence interval, 1.73-4.17), pregnancy-induced hypertension (relative risk, 1.94; 95% confidence interval, 1.24-3.01), and stillbirth (relative risk, 9.42; 95% confidence interval, 3.19-27.76), but not preterm delivery (relative risk, 1.92; 95% confidence interval, 0.82-4.54). CONCLUSION Velamentous cord insertion is associated with several adverse perinatal outcomes, including stillbirth, and these associations persist when only prenatally diagnosed cases are considered and when vasa previa cases are excluded. According to these findings, the exact pathophysiology should be further investigated and an effective prenatal monitoring plan should be developed.
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Affiliation(s)
- Antonios Siargkas
- From the Third Department of Obstetrics and Gynecology, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Ioannis Tsakiridis
- From the Third Department of Obstetrics and Gynecology, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece.
| | - Christina Pachi
- From the Third Department of Obstetrics and Gynecology, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Apostolos Mamopoulos
- From the Third Department of Obstetrics and Gynecology, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Apostolos Athanasiadis
- From the Third Department of Obstetrics and Gynecology, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Themistoklis Dagklis
- From the Third Department of Obstetrics and Gynecology, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
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Covarrubias A, Aguilera-Olguín M, Carrasco-Wong I, Pardo F, Díaz-Astudillo P, Martín SS. Feto-placental Unit: From Development to Function. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1428:1-29. [PMID: 37466767 DOI: 10.1007/978-3-031-32554-0_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
The placenta is an intriguing organ that allows us to survive intrauterine life. This essential organ connects both mother and fetus and plays a crucial role in maternal and fetal well-being. This chapter presents an overview of the morphological and functional aspects of human placental development. First, we describe early human placental development and the characterization of the cell types found in the human placenta. Second, the human placenta from the second trimester to the term of gestation is reviewed, focusing on the morphology and specific pathologies that affect the placenta. Finally, we focus on the placenta's primary functions, such as oxygen and nutrient transport, and their importance for placental development.
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Affiliation(s)
- Ambart Covarrubias
- Health Sciences Faculty, Universidad San Sebastián, Concepción, Chile
- Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA, USA
- Group of Research and Innovation in Vascular Health (GRIVAS Health), Chillán, Chile
| | - Macarena Aguilera-Olguín
- Biomedical Research Centre, School of Medicine, Universidad de Valparaíso, Viña del Mar, Chile
- Cellular Signalling and Differentiation Laboratory (CSDL), Medicine and Science Faculty, Universidad San Sebastián, Santiago, Chile
| | - Ivo Carrasco-Wong
- Cellular Signalling and Differentiation Laboratory (CSDL), School of Medical Technology, Medicine and Science Faculty, Universidad San Sebastián, Santiago, Chile
| | - Fabián Pardo
- Metabolic Diseases Research Laboratory, Interdisciplinary Centre of Territorial Health Research (CIISTe), Biomedical Research Center (CIB), San Felipe Campus, School of Medicine, Faculty of Medicine, Universidad de Valparaíso, San Felipe, Chile
| | - Pamela Díaz-Astudillo
- Biomedical Research Centre, School of Medicine, Universidad de Valparaíso, Viña del Mar, Chile
| | - Sebastián San Martín
- Biomedical Research Centre, School of Medicine, Universidad de Valparaíso, Viña del Mar, Chile.
- Group of Research and Innovation in Vascular Health (GRIVAS Health), Chillan, Chile.
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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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Tsakiridis I, Dagklis T, Athanasiadis A, Dinas K, Sotiriadis A. Impact of Marginal and Velamentous Cord Insertion on Uterine Artery Doppler Indices, Fetal Growth, and Preeclampsia. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2022; 41:2011-2018. [PMID: 34787339 DOI: 10.1002/jum.15883] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 10/12/2021] [Accepted: 10/30/2021] [Indexed: 06/13/2023]
Abstract
OBJECTIVES To assess the impact of marginal (MCI) or velamentous (VCI) cord insertion on uterine artery pulsatility index (UtA PI), preeclampsia (PE), and offspring's birthweight (BW). METHODS A retrospective cohort study of singleton pregnancies, undergoing routine anomaly scan at 20+0 -23+6 gestational weeks, was conducted between 2016 and 2020. The effect of placental cord insertion on BW and UtA mean PI z-scores was assessed using the t test or analysis of variance and post-hoc tests; their association with PE was evaluated with the chi-square test. A multivariate logistic regression model was employed to assess the independent association of placental cord insertion and UtA PI z-score with PE, BW <10th, <5th centile, and intrauterine death (IUD), using specific confounders. RESULTS The study population included 4453 pregnancies. Conception via assisted reproductive technology (ART) was associated with increased risk of abnormal cord insertion (odds ratio [OR]: 2.237; 95% confidence interval [CI]: 1.561-3.206; P < .001). Women with MCI/VCI had higher mean UtA PI z-score than those with central/eccentric (0.29 vs 0.01; mean difference: -0.28; 95% CI: -0.399 to -0.165; P < .001). MCI/VCI were associated with higher rates of BW <10th centile (central/eccentric: 16.2% vs MCI: 21.9% vs VCI: 35.7%; P < .001) and BW <5th centile (9.8 vs 15.1 vs 23.2%, respectively; P < .001). No association was identified between MCI/VCI and PE (P = .968). Finally, VCI (aOR: 13.717; 95% CI: 1.576-119.379; P = .018) and increased BMI (aOR: 1.167; 95% CI: 1.071-1.271; P < .001) significantly correlated with IUD. CONCLUSIONS Abnormal cord insertion is more common in ART pregnancies. MCI/VCI are associated with higher mean UtA PI and lower BW centile, but not with increased risk of PE.
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Affiliation(s)
- Ioannis Tsakiridis
- Third Department of Obstetrics and Gynaecology, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Themistoklis Dagklis
- Third Department of Obstetrics and Gynaecology, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Apostolos Athanasiadis
- Third Department of Obstetrics and Gynaecology, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Konstantinos Dinas
- Second Department of Obstetrics and Gynaecology, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Alexandros Sotiriadis
- Second Department of Obstetrics and Gynaecology, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
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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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Abstract
Routine second trimester ultrasound (US) examinations include an assessment of the umbilical cord given its vital role as a vascular conduit between the maternal placenta and fetus during fetal development. Placental cord insertion abnormalities can be identified during prenatal US screening and are increasingly recognized as independent risk factors for various complications during pregnancy and delivery. The purpose of this pictorial review is to illustrate examples of velamentous and marginal placental cord insertion with an emphasis on how to differentiate their morphology using color Doppler US.
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Dore S, Ehman W. No. 396-Fetal Health Surveillance: Intrapartum Consensus Guideline. JOURNAL OF OBSTETRICS AND GYNAECOLOGY CANADA 2021; 42:316-348.e9. [PMID: 32178781 DOI: 10.1016/j.jogc.2019.05.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
OBJECTIVE To present evidence and recommendations regarding use, classification, interpretation, response, and documentation of fetal surveillance in the intrapartum period and to provide information to help minimize the risk of birth asphyxia while maintaining the lowest possible rate of obstetrical intervention. INTENDED USERS Members of intrapartum care teams, including but not limited to obstetricians, family physicians, midwives and nurses, and their learners TARGET POPULATION: Intrapartum women OPTIONS: All methods of uterine activity assessment and fetal heart rate surveillance were considered in developing this document. OUTCOMES The impact, benefits, and risks of different methods of surveillance on the diverse maternal-fetal health conditions have been reviewed based on current evidence and expert opinion. No fetal surveillance method will provide 100% detection of fetal compromise; thus, all FHS methods are viewed as screening tests. As the evidence continues to evolve, caregivers from all disciplines are encouraged to attend evidence-based Canadian educational programs every 2 years. EVIDENCE Literature published between January 1976 and February 2019 was reviewed. Medline, the Cochrane Database, and international guidelines were used to search the literature for all studies on intrapartum fetal surveillance. VALIDATION METHODS The principal and contributing authors agreed to the content and recommendations. The Board of the Society of Obstetricians and Gynaecologists of Canada approved the final draft for publication. The level of evidence has been determined using the criteria and classifications of the Canadian Task Force on Preventive Health Care. BENEFITS, HARM, AND COSTS Consistent interdisciplinary use of the guideline, appropriate equipment, and trained professional staff enhances safe intrapartum care. Women and their support person(s) should be informed of the benefits and harms of different methods of fetal health surveillance. RECOMMENDATIONS CommunicationSupport During Active LabourPrinciples of Intrapartum Fetal SurveillanceSelecting the Method of Fetal Heart Rate Monitoring: Intermittent Auscultation or Electronic Fetal MonitoringPaper SpeedAdmission AssessmentsEpidural AnalgesiaIntermittent Auscultation in LabourElectronic Fetal Monitoring in LabourClassification of Intrapartum Fetal SurveillanceMaternal Heart RateFetal Health Surveillance Assessment in the Active Second Stage of LabourIntrauterine ResuscitationDigital Fetal Scalp StimulationFetal Scalp Blood SamplingUmbilical Cord Blood GasesDocumentationFetal Surveillance Technology Not RecommendedFetal Health Surveillance Education.
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Performance of ultrasound for the visualization of the placental cord insertion. Curr Opin Obstet Gynecol 2020; 31:403-409. [PMID: 31693567 DOI: 10.1097/gco.0000000000000590] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
PURPOSE OF REVIEW The purpose of this review was to review the literature on the performance of ultrasound for the visualization of the placental cord insertion (PCI) and for the diagnosis of abnormal placental cord insertion (APCI). APCI included both marginal cord insertion (MCI) and velamentous cord insertion (VCI) PCI. RECENT FINDINGS The overall rate of visualization of the PCI across all trimesters is 90.3% and for those studies routinely using color Doppler, 98.1% (P < 0.0001). Although the visualization was lower with advancing gestational age, it remained high even into the late third trimester. In all studies, where time was reported, the PCI was visualized in most cases in less than 1 min. Ultrasound performed best for the diagnosis of VCI with a sensitivity, specificity and positive predictive value of 100, 99.9 and 85.7%, respectively, with routine use of color Doppler. SUMMARY Ultrasound is an excellent screening test for the evaluation of PCI across all trimesters. The use of color Doppler increases the rate of visualization and should be routinely used. Ultrasound with color Doppler is also an excellent screening test for the diagnosis of VCI. However, the performance of ultrasound is reduced with the inclusion of MCI.
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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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Dore S, Ehman W. No396 - Surveillance du bien-être fœtal : Directive clinique de consensus des soins intrapartum. JOURNAL OF OBSTETRICS AND GYNAECOLOGY CANADA 2020; 42:349-384.e10. [DOI: 10.1016/j.jogc.2019.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Wax IR, Cartin A, Craig WY, Pinette MG, Wax JR. Second-Trimester Ultrasound-Measured Umbilical Cord Insertion-to-Placental Edge Distance: Determining an Outcome-Based Threshold for Identifying Marginal Cord Insertions. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2020; 39:351-358. [PMID: 31432561 DOI: 10.1002/jum.15113] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 07/22/2019] [Accepted: 07/23/2019] [Indexed: 06/10/2023]
Abstract
OBJECTIVES We sought to study potential diagnostic criteria for marginal placental cord insertions as determined by associations with obstetric outcomes. METHODS This single-center retrospective cohort investigation included singleton gestations delivering from January 1, 2012, to December 31, 2016, and having a standard or detailed fetal ultrasound examination from 18 weeks to 21 weeks 6 days. Cord insertion-to-placental edge distances were used to create a referent comparison group and 3 patient groups: greater than 3.0 cm (comparison); greater than 2.0 to 3.0 cm (group 1); greater than 1.0 to 2.0 cm (group 2); and 1.0 cm or less (group 3). The primary outcome consisted of any one of spontaneous delivery before 37 weeks, fetal growth restriction, oligohydramnios, placental abruption, or intrauterine fetal demise. RESULTS The numbers of participants and mean distances ± SDs for the comparison group and groups 1 to 3, respectively, were 628 and 4.68 ± 1.17 cm, 106 and 2.52 ± 0.26 cm, 131 and 1.60 ± 0.29 cm, and 77 and 0.36 ± 0.37 cm, respectively. The primary outcome was significantly associated only with cord insertion-to-placental edge distances of 1.0 cm or less (adjusted odds ratio, 3.05; 95% confidence interval, 1.73-5.38). CONCLUSIONS Marginal cord insertions may be diagnosed when the cord insertion-to-placental edge distance is 1.0 cm or less.
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Affiliation(s)
- Ian R Wax
- Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, Maine Medical Center, Portland, Maine, USA
| | - Angelina Cartin
- Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, Maine Medical Center, Portland, Maine, USA
| | - Wendy Y Craig
- Maine Medical Center Research Institute, Scarborough, Maine, USA
| | - Michael G Pinette
- Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, Maine Medical Center, Portland, Maine, USA
| | - Joseph R Wax
- Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, Maine Medical Center, Portland, Maine, USA
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Atypical Vasa Previa in a Velamentous Cord Insertion Identified During Sonographic Examination. JOURNAL OF DIAGNOSTIC MEDICAL SONOGRAPHY 2020. [DOI: 10.1177/8756479319879076] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Vasa previa is a life-threatening complication of a velamentous cord insertion. Understanding variations of this condition is vital to ensuring optimal patient outcomes. The case presented is of a 27-year-old primigravida woman whose condition was diagnosed during her second-trimester obstetric sonographic examination. The case demonstrated an unusual variation of vasa previa, in which a single fetal vessel separated from the membranous insertion located near the fundal placenta and traversed posteriorly through the chorionic membrane to within 0.83 cm of the internal os. The case was followed with the most up-to-date standards recommended by the American Institute of Ultrasound in Medicine.
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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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