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Hessami K, Horgan R, Munoz JL, Norooznezhad AH, Nassr AA, Fox KA, Di Mascio D, Caldwell M, Catania V, D'Antonio F, Abuhamad AZ. Trimester-specific diagnostic accuracy of ultrasound for detection of placenta accreta spectrum: systematic review and meta-analysis. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2024; 63:723-730. [PMID: 38324675 DOI: 10.1002/uog.27606] [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: 10/23/2023] [Revised: 01/17/2024] [Accepted: 01/22/2024] [Indexed: 02/09/2024]
Abstract
OBJECTIVE To assess the diagnostic accuracy of ultrasound for detecting placenta accreta spectrum (PAS) during the first trimester of pregnancy and compare it with the accuracy of second- and third-trimester ultrasound examination in pregnancies at risk for PAS. METHODS PubMed, EMBASE and Web of Science databases were searched to identify relevant studies published from inception until 10 March 2023. Inclusion criteria were cohort, case-control or cross-sectional studies that evaluated the accuracy of ultrasound examination performed at < 14 weeks of gestation (first trimester) or ≥ 14 weeks of gestation (second/third trimester) for the diagnosis of PAS in pregnancies with clinical risk factors. The primary outcome was the diagnostic accuracy of sonography in detecting PAS in the first trimester, compared with the accuracy of ultrasound examination in the second and third trimesters. The secondary outcome was the diagnostic accuracy of each sonographic marker individually across the trimesters of pregnancy. The reference standard was PAS confirmed at pathological or surgical examination. The potential of ultrasound and different ultrasound signs to detect PAS was assessed by computing summary estimates of sensitivity, specificity, diagnostic odds ratio and positive and negative likelihood ratios. RESULTS A total of 37 studies, including 5764 pregnancies at risk of PAS, with 1348 cases of confirmed PAS, were included in our analysis. The meta-analysis demonstrated that ultrasound had a sensitivity of 86% (95% CI, 78-92%) and specificity of 63% (95% CI, 55-70%) during the first trimester, and a sensitivity of 88% (95% CI, 84-91%) and specificity of 92% (95% CI, 85-96%) during the second/third trimester. Regarding sonographic markers examined in the first trimester, lower uterine hypervascularity exhibited the highest sensitivity (97% (95% CI, 19-100%)), and uterovesical interface irregularity demonstrated the highest specificity (99% (95% CI, 96-100%)). In the second/third trimester, loss of clear zone had the highest sensitivity (80% (95% CI, 72-86%)), and uterovesical interface irregularity exhibited the highest specificity (99% (95% CI, 97-100%)). CONCLUSIONS First-trimester ultrasound examination has similar accuracy to second- and third-trimester ultrasound examinations for the diagnosis of PAS. Routine first-trimester ultrasound screening for patients at high risk of PAS may improve detection rates and allow earlier referral to tertiary care centers for pregnancy management. © 2024 International Society of Ultrasound in Obstetrics and Gynecology.
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Affiliation(s)
- K Hessami
- Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX, USA
| | - R Horgan
- Department of Obstetrics and Gynecology, Eastern Virginia Medical School, Norfolk, VA, USA
| | - J L Munoz
- Division of Fetal Therapy and Surgery, Baylor College of Medicine, Houston, TX, USA
| | - A H Norooznezhad
- Medical Biology Research Centre, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - A A Nassr
- Division of Fetal Therapy and Surgery, Baylor College of Medicine, Houston, TX, USA
| | - K A Fox
- Department of Obstetrics and Gynecology, The University of Texas Medical Branch at Galveston, Galveston, TX, USA
| | - D Di Mascio
- Department of Maternal and Child Health and Urological Sciences, Sapienza University of Rome, Rome, Italy
| | - M Caldwell
- Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX, USA
| | - V Catania
- Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX, USA
| | - F D'Antonio
- Department of Obstetrics and Gynecology, University of Chieti, Chieti, Italy
| | - A Z Abuhamad
- Department of Obstetrics and Gynecology, Eastern Virginia Medical School, Norfolk, VA, USA
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Dar P, Doulaveris G. First-trimester screening for placenta accreta spectrum. Am J Obstet Gynecol MFM 2024; 6:101329. [PMID: 38447672 DOI: 10.1016/j.ajogmf.2024.101329] [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: 11/28/2023] [Revised: 02/02/2024] [Accepted: 02/27/2024] [Indexed: 03/08/2024]
Abstract
In recent years, there has been a significant rise in cases of placenta accreta spectrum, a group of life-threatening placental disorders that can arise during childbirth. Early detection plays a crucial role in facilitating meticulous delivery planning, ultimately leading to a reduction in mortality and morbidity rates and improved overall outcomes. Although third-trimester ultrasound has traditionally been the primary method for prenatal screening for placenta accreta spectrum, it often falls short in identifying cases or diagnosis is too late for optimal delivery planning. Emerging evidence has highlighted the option of early detection of placenta accreta spectrum indicators during the first trimester of pregnancy. This comprehensive review delves into our current knowledge of sonographic assessment of the uterine cervicoisthmic complex in the first trimester, examining the location and appearance of cesarean scars and exploring first-trimester screening strategies, ultimately paving the way for improved maternal and neonatal outcomes.
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Affiliation(s)
- Pe'er Dar
- Division of Fetal Medicine and Ultrasound, Department of Obstetrics & Gynecology and Women's Health, Montefiore Medical Center, Albert Einstein College of Medicine (Drs Dar and Doulaveris), Bronx, NY.
| | - Georgios Doulaveris
- Division of Fetal Medicine and Ultrasound, Department of Obstetrics & Gynecology and Women's Health, Montefiore Medical Center, Albert Einstein College of Medicine (Drs Dar and Doulaveris), Bronx, NY
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Lin F, Chen Z, Tao H, Ren X, Ma P, Lash GE, Shuai H, Li P. Sonographic Findings of Vascular Signals for Retained Products of Conception in Women Following First-Trimester Termination of Pregnancy. JOURNAL OF OBSTETRICS AND GYNAECOLOGY CANADA 2024; 46:102266. [PMID: 37940040 DOI: 10.1016/j.jogc.2023.102266] [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: 09/06/2023] [Revised: 10/12/2023] [Accepted: 10/13/2023] [Indexed: 11/10/2023]
Abstract
OBJECTIVES To evaluate the occurrence of retained products of conception (RPOC) after termination of pregnancy in the first trimester and to assess the vascular signals with transvaginal ultrasonography (TVUS) examination in the detection of retained products. METHODS A retrospective cohort study was performed using TVUS examination in patients following termination of pregnancy. In cases of RPOC, 3 scales of vascular signal were identified: type 1, no or small amount, spot flow signals; type 2, medium amount, strip-like flow signals; type 3, rich amount, circumferential-like flow signals. The correlation between vascular signals and placenta accreta spectrum (PAS) staging was proposed by sonography and histopathology findings. RESULTS The 3 vascular patterns were differently distributed within non-RPOC as well as RPOC patients with and without PAS: type 1 vascular signal detection rates of non-RPOC and RPOC were 97.8% (262/268) and 28.1% (18/64), respectively. Of 64 cases of RPOC, 48.4% (31/64) of the patients had type 2 vascular signals. Vascular signals were enhanced in RPOC with PAS patients whose diagnosis was confirmed by histopathology. CONCLUSIONS The vascularity (amount of flow), vascular pattern (spot, strip- or circumferential-like flow), and the flow penetrating myometrium were significant findings for distinguishing concomitant RPOC with and without PAS. Additionally, RPOC may contribute to PAS progression, or PAS and RPOC in coordination strengthen the observed vascular signals.
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Affiliation(s)
- Fangfang Lin
- Department of Ultrasound, Jinan University First Affiliated Hospital, Guangzhou, China
| | - Zongbing Chen
- Department of Pathology, Jinan University School of Medicine, Guangzhou, China; Department of Gynecology and Obstetrics, Jinan University First Affiliated Hospital, Guangzhou, China
| | - Huan Tao
- Department of Gynecology and Obstetrics, Jinan University First Affiliated Hospital, Guangzhou, China
| | - Xinyi Ren
- Department of Pathology, Jinan University School of Medicine, Guangzhou, China
| | - Peiyan Ma
- Department of Ultrasound, Jinan University First Affiliated Hospital, Guangzhou, China
| | - Gendie E Lash
- Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Hanlin Shuai
- Department of Gynecology and Obstetrics, Jinan University First Affiliated Hospital, Guangzhou, China.
| | - Ping Li
- Department of Pathology, Jinan University School of Medicine, Guangzhou, China.
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Araujo Júnior E, Caldas JVJ, Sun SY, Castro PT, Passos JP, Werner H. Placenta acrreta spectrum-first trimester, 2D and 3D ultrasound, and magnetic resonance imaging findings. JOURNAL OF CLINICAL ULTRASOUND : JCU 2024; 52:321-330. [PMID: 38126224 DOI: 10.1002/jcu.23627] [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: 10/10/2023] [Revised: 11/23/2023] [Accepted: 12/05/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND The term placenta accreta spectrum (PAS) is commonly used to describe abnormal trophoblastic invasion of the myometrium, serosa, or organs adjacent to the uterus. It is of great obstetric importance because of its high morbidity, risk of hemorrhage, admission to the intensive care unit, risk of hysterectomy, and high risk of iatrogenic pelvic lesions and even death. These risks are minimized when prenatal diagnosis is performed. Prenatal diagnosis of PAS is based on imaging findings suggestive of abnormal and pathologically adherent placentation, including placental lacunae (intraplacental sonolucent spaces), disruption of the bladder-uterine serosa interface, turbulent flow on color Doppler, and bridging vessels. OBJECTIVE In this article, we review the major prenatal imaging features of PAS using diagnostic modalities (first trimester, two-dimensional ultrasound, three-dimensional ultrasound, and magnetic resonance imaging) for the diagnosis of PAS.
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Affiliation(s)
- Edward Araujo Júnior
- Department of Obstetrics, Paulista School of Medicine, Federal University of São Paulo (EPM-UNIFESP), São Paulo, SP, Brazil
- Discipline of Woman Health, Municipal University of São Caetano do Sul (USCS), São Caetano do Sul, SP, Brazil
| | - João Victor Jacomele Caldas
- Department of Obstetrics, Paulista School of Medicine, Federal University of São Paulo (EPM-UNIFESP), São Paulo, SP, Brazil
| | - Sue Yasaki Sun
- Department of Obstetrics, Paulista School of Medicine, Federal University of São Paulo (EPM-UNIFESP), São Paulo, SP, Brazil
| | - Pedro Teixeira Castro
- Department of Fetal Medicine, Biodesign Laboratory DASA/PUC, Rio de Janeiro-RJ, Brazil
| | - Jurandir Piassi Passos
- Department of Obstetrics, Paulista School of Medicine, Federal University of São Paulo (EPM-UNIFESP), São Paulo, SP, Brazil
| | - Heron Werner
- Department of Fetal Medicine, Biodesign Laboratory DASA/PUC, Rio de Janeiro-RJ, Brazil
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Fitzgerald GD, Newton JM, Atasi L, Buniak CM, Burgos-Luna JM, Burnett BA, Carver AR, Cheng C, Conyers S, Davitt C, Deshmukh U, Donovan BM, Easter SR, Einerson BD, Fox KA, Habib AS, Harrison R, Hecht JL, Licon E, Nino JM, Munoz JL, Nieto-Calvache AJ, Polic A, Ramsey PS, Salmanian B, Shamshirsaz AA, Shamshirsaz AA, Shrivastava VK, Woolworth MB, Yurashevich M, Zuckerwise L, Shainker SA. Placenta accreta spectrum care infrastructure: an evidence-based review of needed resources supporting placenta accreta spectrum care. Am J Obstet Gynecol MFM 2024; 6:101229. [PMID: 37984691 DOI: 10.1016/j.ajogmf.2023.101229] [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: 09/07/2023] [Revised: 11/02/2023] [Accepted: 11/15/2023] [Indexed: 11/22/2023]
Abstract
The incidence of placenta accreta spectrum, the deeply adherent placenta with associated increased risk of maternal morbidity and mortality, has seen a significant rise in recent years. Therefore, there has been a rise in clinical and research focus on this complex diagnosis. There is international consensus that a multidisciplinary coordinated approach optimizes outcomes. The composition of the team will vary from center to center; however, central themes of complex surgical experts, specialists in prenatal diagnosis, critical care specialists, neonatology specialists, obstetrics anesthesiology specialists, blood bank specialists, and dedicated mental health experts are universal throughout. Regionalization of care is a growing trend for complex medical needs, but the location of care alone is just a starting point. The goal of this article is to provide an evidence-based framework for the crucial infrastructure needed to address the unique antepartum, delivery, and postpartum needs of the patient with placenta accreta spectrum. Rather than a clinical checklist, we describe the personnel, clinical unit characteristics, and breadth of contributing clinical roles that make up a team. Screening protocols, diagnostic imaging, surgical and potential need for critical care, and trauma-informed interaction are the basis for comprehensive care. The vision from the author group is that this publication provides a semblance of infrastructure standardization as a means to ensure proper preparation and readiness.
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Affiliation(s)
- Garrett D Fitzgerald
- Department of Obstetrics and Gynecology, Medical College of Wisconsin, Milwaukee, WI (Dr Fitzgerald).
| | - J M Newton
- Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, Vanderbilt University Medical Center, Nashville, TN (Dr Newton)
| | - Lamia Atasi
- Department of Obstetrics and Gynecology, Mercy Hospital, St. Louis, MO (Dr Atasi)
| | - Christina M Buniak
- Department of Obstetrics and Gynecology, Massachusetts General Hospital, Boston, MA (Dr Buniak)
| | | | - Brian A Burnett
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX (Dr Burnett)
| | - Alissa R Carver
- Department of Obstetrics and Gynecology, Wilmington Maternal-Fetal Medicine, Wilmington, NC (Dr Carver)
| | - CeCe Cheng
- Department of Obstetrics and Gynecology, Health Science Center at San Antonio, University of Texas, San Antonio, TX (Dr Cheng)
| | - Steffany Conyers
- Department of Obstetrics and Gynecology, Beth Israel Deaconess Medical Center, Boston, MA (Drs Conyers, Deshmukh, Donovan, Hecht, and Shainker)
| | - Caroline Davitt
- Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX (Drs Davitt and Am Shamshiraz)
| | - Uma Deshmukh
- Department of Obstetrics and Gynecology, Beth Israel Deaconess Medical Center, Boston, MA (Drs Conyers, Deshmukh, Donovan, Hecht, and Shainker)
| | - Bridget M Donovan
- Department of Obstetrics and Gynecology, Beth Israel Deaconess Medical Center, Boston, MA (Drs Conyers, Deshmukh, Donovan, Hecht, and Shainker); Department of Obstetrics, Gynecology, and Reproductive Biology, Harvard Medical School, Boston, MA (Drs Donovan and Shainker)
| | - Sara Rae Easter
- Department of Obstetrics and Gynecology, Brigham and Women's Hospital, Boston, MA (Dr Easter)
| | - Brett D Einerson
- Department of Obstetrics and Gynecology, University of Utah Health, Salt Lake City, UT (Dr Einerson)
| | - Karin A Fox
- Baylor College of Medicine, Houston, TX (Dr Fox)
| | - Ashraf S Habib
- Duke University School of Medicine, Durham, NC (Dr Habib)
| | - Rachel Harrison
- Department of Obstetrics and Gynecology, Advocate Aurora Health, Chicago, IL (Dr Harrison)
| | - Jonathan L Hecht
- Department of Obstetrics and Gynecology, Beth Israel Deaconess Medical Center, Boston, MA (Drs Conyers, Deshmukh, Donovan, Hecht, and Shainker)
| | - Ernesto Licon
- Miller Women's & Children's Hospital/Long Beach Memorial Medical Center, Orange, CA (Dr Licon)
| | - Julio Mateus Nino
- Department of Obstetrics and Gynecology, Atrium Health Wake Forest School of Medicine, Winston-Salem, NC (Dr Nino)
| | - Jessian L Munoz
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Texas Children's Hospital, Baylor College of Medicine, Houston, TX (Dr Munoz)
| | | | | | - Patrick S Ramsey
- University of Texas Health/University Health San Antonio, San Antonio, TX (Dr Ramsey)
| | - Bahram Salmanian
- Department of Obstetrics and Gynecology, University of Colorado Health Anschutz Medical Campus, Boulder, CO (Dr Salmanian)
| | | | - Amir A Shamshirsaz
- Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX (Drs Davitt and Am Shamshiraz)
| | - Vineet K Shrivastava
- Miller Women's and Children's Hospital/Long Beach Memorial Medical Center, Orange, CA (Dr Shrivastava)
| | | | - Mary Yurashevich
- Department of Anesthesiology, Duke Health, Durham, NC (Dr Yurashevich)
| | - Lisa Zuckerwise
- and Department of Obstetrics and Gynecology, Vanderbilt University Medical Center, Nashville, TN (Dr Zuckerwise)
| | - Scott A Shainker
- Department of Obstetrics and Gynecology, Beth Israel Deaconess Medical Center, Boston, MA (Drs Conyers, Deshmukh, Donovan, Hecht, and Shainker); Department of Obstetrics, Gynecology, and Reproductive Biology, Harvard Medical School, Boston, MA (Drs Donovan and Shainker)
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Abstract
Placenta accreta spectrum is a group of disorders involving abnormal trophoblastic invasion to the deep layers of endometrium and myometrium. Placenta accrete spectrum is one of the major causes of severe maternal morbidity, with increasing incidence in the past decade mainly secondary to an increase in cesarean deliveries. Severity varies depending on the depth of invasion, with the most severe form, known as percreta, invading uterine serosa or surrounding pelvic organs. Diagnosis is usually achieved by ultrasound, and MRI is sometimes used to assess invasion. Management usually involves a hysterectomy at the time of delivery. Other strategies include delayed hysterectomy or expectant management.
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Affiliation(s)
- Mahmoud Abdelwahab
- Department of Obstetrics and Gynecology, The Ohio State University College of Medicine, Columbus, Ohio
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Jauniaux E, D'Antonio F, Bhide A, Prefumo F, Silver RM, Hussein AM, Shainker SA, Chantraine F, Alfirevic Z. Modified Delphi study of ultrasound signs associated with placenta accreta spectrum. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2023; 61:518-525. [PMID: 36609827 DOI: 10.1002/uog.26155] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/18/2022] [Accepted: 12/20/2022] [Indexed: 06/17/2023]
Abstract
OBJECTIVE To determine, by expert consensus through a modified Delphi process, the role of standardized and new ultrasound signs in the prenatal evaluation of patients at high risk of placenta accreta spectrum (PAS). METHODS A systematic review of articles providing information on ultrasound imaging signs or markers associated with PAS was performed before the development of questionnaires for the first round of the Delphi process. Only peer-reviewed original research studies in the English language describing one or more new ultrasound sign(s) for the prenatal evaluation of PAS were included. A three-round consensus-building Delphi method was then conducted under the guidance of a steering group, which included nine experts who invited an international panel of experts in obstetric ultrasound imaging in the evaluation of patients at high risk for PAS. Consensus was defined as agreement of ≥ 70% between participants. RESULTS The systematic review identified 15 articles describing eight new ultrasound signs for the prenatal evaluation of PAS. A total of 35 external experts were approached, of whom 31 agreed and participated in the first round. Thirty external experts (97%) and seven experts from the steering group completed all three Delphi rounds. A consensus was reached that a prior history of at least one Cesarean delivery, myomectomy or PAS should be an indication for detailed PAS ultrasound assessment. The panelists also reached a consensus that seven of the 11 conventional signs of PAS should be included in the examination of high-risk patients and the routine mid-gestation scan report: (1) loss of the 'clear zone', (2) myometrial thinning, (3) bladder-wall interruption, (4) placental bulge, (5) uterovesical hypervascularity, (6) placental lacunae and (7) bridging vessels. A consensus was not reached for any of the eight new signs identified by the systematic review. With respect to other ultrasound features that are not specific to PAS but increase the probability of PAS at birth, the panelists reached a consensus for the finding of anterior placenta previa or placenta previa with cervical involvement. The experts were also asked to determine which PAS signs should be quantified and consensus was reached only for the quantification of placental lacunae using an existing score. For predicting surgical outcome in patients with a high probability of PAS at delivery, a consensus was obtained for loss of the clear zone, bladder-wall interruption, presence of placental lacunae and presence of placenta previa involving the cervix. CONCLUSIONS We have confirmed the continued importance of seven established standardized ultrasound signs of PAS, highlighted the role of transvaginal ultrasound in evaluating the placental position and anatomy of the cervix, and identified new ultrasound signs that may become useful in the future prenatal evaluation and management of patients at high risk for PAS at birth. © 2023 The Authors. Ultrasound in Obstetrics & Gynecology published by John Wiley & Sons Ltd on behalf of International Society of Ultrasound in Obstetrics and Gynecology.
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Affiliation(s)
- E Jauniaux
- EGA Institute for Women's Health, Faculty of Population Health Sciences, University College London, London, UK
| | - F D'Antonio
- Center for Fetal Care and High-Risk Pregnancy, Department of Obstetrics and Gynecology, University of Chieti, Italy
| | - A Bhide
- Fetal Medicine Unit, Department of Obstetrics and Gynaecology, St George's Hospital, London, UK
| | - F Prefumo
- Obstetrics and Gynaecology Unit, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - R M Silver
- Department of Obstetrics and Gynecology, University of Utah Health, Salt Lake City, UT, USA
| | - A M Hussein
- Department of Obstetrics and Gynecology, University of Cairo, Cairo, Egypt
| | - S A Shainker
- Department of Obstetrics and Gynecology, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - F Chantraine
- Department of Obstetrics and Gynecology, Centre Hospitalier Universitaire de Liège, CHR Citadelle, Liège, Belgium
| | - Z Alfirevic
- Department of Women's and Children's Health, University of Liverpool, Liverpool, UK
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Second-trimester abortion care for those with complex medical conditions. Curr Opin Obstet Gynecol 2022; 34:359-366. [PMID: 36036465 DOI: 10.1097/gco.0000000000000817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
PURPOSE OF THE REVIEW This review focuses on patients who are most likely to experience morbidity associated with second trimester abortion care and risk mitigation strategies. RECENT FINDINGS Prior cesarean birth, particularly multiple prior cesarean births, is the most significant risk factor associated with complications during second trimester abortion because of increased risks of hemorrhage, with or without placenta accreta spectrum (PAS), and distorted anatomy, which increases the risk of uterine perforation. Recent data suggests that first trimester ultrasound findings may be predictive of PAS, including multiple lacunae, abnormal uteroplacental interface, and hypervascularity. Multiple common medications interact with mifepristone and are therefore contraindicated; ulipristal shares mifepristone's selective progesterone receptor modulator activity but does not share the same metabolic pathway. Recent data suggests ulipristal may be an effective adjunct for cervical preparation, avoiding potentially mifepristone's drug-drug interactions. Those ending a pregnancy due to severe early-onset hypertensive disorders have a high rate of clinically significant thrombocytopenia: platelet transfusion is recommended for those with platelets <50 000 per cubic millimeter. SUMMARY Pregnant people presenting for care in the second trimester may have conditions that make an abortion more technically or medically complex. Clinicians can mitigate much of this increased risk with preprocedural planning, and appropriate intra-operative preparedness.
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Deep Learning Algorithm-Based Ultrasound Image Information in Diagnosis and Treatment of Pernicious Placenta Previa. COMPUTATIONAL AND MATHEMATICAL METHODS IN MEDICINE 2022; 2022:3452176. [PMID: 35707039 PMCID: PMC9192257 DOI: 10.1155/2022/3452176] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 05/09/2022] [Accepted: 05/11/2022] [Indexed: 12/14/2022]
Abstract
This study was to explore the value of the deep dictionary learning algorithm in constructing a B ultrasound scoring system and exploring its application in the clinical diagnosis and treatment of pernicious placenta previa (PPP). 60 patients with PPP were divided into a low-risk group (severe, implantable) and high-risk group (adhesive, penetrating) according to their clinical characteristics, B ultrasound imaging characteristics, and postpartum pathological examination results. Under PPP ultrasonic image information using the deep learning algorithm, the B ultrasound image diagnostic scoring system was established to predict the depth of various types of placenta accreta. The results showed that the cut-off values of severe, implantable, adhesive, and penetrating types were <2.3, 2.3-6.5, 6.5-9, and ≥9 points, respectively; there were significant differences in the termination of pregnancy and neonatal birth weight between the two groups (P < 0.05); the positive predictive value, negative predictive value, and false positive rate of ultrasound images based on the deep dictionary learning algorithm for PPP were 95.33%, 94.89%, and 3.56%, respectively. Thus, the ultrasound image diagnostic scoring system based on the deep learning algorithm has an important predictive role for PPP, which can provide a more targeted diagnosis and treatment plan for patients in clinical practice and improve the prediction and treatment efficiency.
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Jauniaux E, Hussein AM, Einerson BD, Silver RM. Debunking 20 th century myths and legends about the diagnosis of placenta accreta spectrum. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2022; 59:417-423. [PMID: 35363412 DOI: 10.1002/uog.24890] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Revised: 02/06/2022] [Accepted: 02/11/2022] [Indexed: 06/14/2023]
Affiliation(s)
- E Jauniaux
- EGA Institute for Women's Health, Faculty of Population Health Sciences, University College London, London, UK
| | - A M Hussein
- Department of Obstetrics and Gynecology, University of Cairo, Cairo, Egypt
| | - B D Einerson
- Department of Obstetrics and Gynecology, University of Utah Health Sciences Center (UUHSC), Salt Lake City, UT, USA
| | - R M Silver
- Department of Obstetrics and Gynecology, University of Utah Health Sciences Center (UUHSC), Salt Lake City, UT, USA
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D'Antonio F, Timor-Tritsch IE, Khalil A, Calì G. New classification of placenta accreta spectrum disorders should include presence of Cesarean scar pregnancy. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2022; 59:563. [PMID: 35363411 DOI: 10.1002/uog.24880] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 01/20/2022] [Indexed: 06/14/2023]
Affiliation(s)
- F D'Antonio
- Center for Fetal Care and High-Risk Pregnancy, Department of Obstetrics and Gynecology, University of Chieti, Chieti, Italy
| | - I E Timor-Tritsch
- Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, New York University SOM, New York, NY, USA
| | - A Khalil
- Fetal Medicine Unit, St George's University Hospitals NHS Foundation Trust, University of London, London, UK
- Vascular Biology Research Centre, Molecular and Clinical Sciences Research Institute, St George's University of London, London, UK
| | - G Calì
- Department of Obstetrics and Gynecology, Azienda Ospedaliera Villa Sofia Cervello, Palermo, Italy
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