1
|
Maged AM, El-Mazny A, Kamal N, Mahmoud SI, Fouad M, El-Nassery N, Kotb A, Ragab WS, Ogila AI, Metwally AA, Lasheen Y, Fahmy RM, Katta M, Shaeer EK, Salah N. Diagnostic accuracy of ultrasound in the diagnosis of Placenta accreta spectrum: systematic review and meta-analysis. BMC Pregnancy Childbirth 2023; 23:354. [PMID: 37189095 DOI: 10.1186/s12884-023-05675-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 05/03/2023] [Indexed: 05/17/2023] Open
Abstract
OBJECTIVE To evaluate the diagnostic accuracy of ultrasound and in the diagnosis of Placenta accreta spectrum (PAS). DATA SOURCES Screening of MEDLINE, CENTRAL, other bases from inception to February 2022 using the keywords related to placenta accreta, increta, percreta, morbidly adherent placenta, and preoperative ultrasound diagnosis. STUDY ELIGIBILITY CRITERIA All available studies- whether were prospective or retrospective- including cohort, case control and cross sectional that involved prenatal diagnosis of PAS using 2D or 3D ultrasound with subsequent pathological confirmation postnatal were included. Fifty-four studies included 5307 women fulfilled the inclusion criteria, PAS was confirmed in 2025 of them. STUDY APPRAISAL AND SYNTHESIS METHODS Extracted data included settings of the study, study type, sample size, participants characteristics and their inclusion and exclusion criteria, Type and site of placenta previa, Type and timing of imaging technique (2D, and 3D), severity of PAS, sensitivity and specificity of individual ultrasound criteria and overall sensitivity and specificity. RESULTS The overall sensitivity was 0.8703, specificity was 0.8634 with -0.2348 negative correlation between them. The estimate of Odd ratio, negative likelihood ratio and positive likelihood ratio were 34.225, 0.155 and 4.990 respectively. The overall estimates of loss of retroplacental clear zone sensitivity and specificity were 0.820 and 0.898 respectively with 0.129 negative correlation. The overall estimates of myometrial thinning, loss of retroplacental clear zone, the presence of bridging vessels, placental lacunae, bladder wall interruption, exophytic mass, and uterovesical hypervascularity sensitivities were 0.763, 0.780, 0.659, 0.785, 0.455, 0.218 and 0.513 while specificities were 0.890, 0.884, 0.928, 0.809, 0.975, 0.865 and 0.994 respectively. CONCLUSIONS The accuracy of ultrasound in diagnosis of PAS among women with low lying or placenta previa with previous cesarean section scars is high and recommended in all suspected cases. TRIAL REGISTRATION Number CRD42021267501.
Collapse
Affiliation(s)
- Ahmed M Maged
- Department of Obstetrics and Gynecology, Kasr Al-Ainy Hospital, Cairo University, Giza, Egypt.
| | - Akmal El-Mazny
- Department of Obstetrics and Gynecology, Kasr Al-Ainy Hospital, Cairo University, Giza, Egypt
| | - Nada Kamal
- Department of Obstetrics and Gynecology, Kasr Al-Ainy Hospital, Cairo University, Giza, Egypt
| | - Safaa I Mahmoud
- Department of Obstetrics and Gynecology, Kasr Al-Ainy Hospital, Cairo University, Giza, Egypt
| | - Mona Fouad
- Department of Obstetrics and Gynecology, Kasr Al-Ainy Hospital, Cairo University, Giza, Egypt
| | - Noura El-Nassery
- Department of Obstetrics and Gynecology, Kasr Al-Ainy Hospital, Cairo University, Giza, Egypt
| | - Amal Kotb
- Department of Obstetrics and Gynecology, Beni-Suef University, Beni-Suef, Egypt
| | - Wael S Ragab
- Department of Obstetrics and Gynecology, Fayoum University, Fayoum, Egypt
| | - Asmaa I Ogila
- Department of Obstetrics and Gynecology, Kasr Al-Ainy Hospital, Cairo University, Giza, Egypt
| | - Ahmed A Metwally
- Department of Obstetrics and Gynecology, Kasr Al-Ainy Hospital, Cairo University, Giza, Egypt
| | - Yossra Lasheen
- Department of Obstetrics and Gynecology, Kasr Al-Ainy Hospital, Cairo University, Giza, Egypt
| | - Radwa M Fahmy
- Department of Obstetrics and Gynecology, Kasr Al-Ainy Hospital, Cairo University, Giza, Egypt
| | - Maha Katta
- Department of Obstetrics and Gynecology, Beni-Suef University, Beni-Suef, Egypt
| | - Eman K Shaeer
- Department of Obstetrics and Gynecology, Kasr Al-Ainy Hospital, Cairo University, Giza, Egypt
| | - Noha Salah
- Department of Obstetrics and Gynecology, Kasr Al-Ainy Hospital, Cairo University, Giza, Egypt
| |
Collapse
|
2
|
Morlando M, Schwickert A, Stefanovic V, Gziri MM, Pateisky P, Chalubinski KM, Nonnenmacher A, Morel O, Braun T, Bertholdt C, Van Beekhuizen HJ, Collins SL. Maternal and neonatal outcomes in planned versus emergency cesarean delivery for placenta accreta spectrum: A multinational database study. Acta Obstet Gynecol Scand 2021; 100 Suppl 1:41-49. [PMID: 33713033 DOI: 10.1111/aogs.14120] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 01/30/2021] [Accepted: 02/05/2021] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Placenta accreta spectrum (PAS) is a condition often resulting in severe maternal morbidity. Scheduled delivery by an experienced team has been shown to improve maternal outcomes; however, the benefits must be weighed against the risk of iatrogenic prematurity. The aim of this study is to investigate the rates of emergency delivery seen for antenatally suspected PAS and compare the resulting outcomes in the 15 referral centers of the International Society for PAS (IS-PAS). MATERIAL AND METHODS Fifteen centers provided cases between 2008 and 2019. The women included were divided into two groups according to whether they had a planned or an emergency cesarean delivery. Delivery was defined as "planned" when performed at a time and date to suit the team. All the remaining cases were classified as "emergency". Maternal characteristics and neonatal outcomes were compared between the two groups according to gestation at delivery. RESULTS In all, 356 women were included. Of these, 239 (67%) underwent a planned delivery and 117 (33%) an emergency delivery. Vaginal bleeding was the indication for emergency delivery in 41 of the 117 women (41%). There were no significant differences in terms of blood loss, transfusion rates or major maternal morbidity between planned and emergency deliveries. However, the rate of maternal intensive therapy unit admission was increased with emergency delivery (45% vs 33%, P = .02). Antepartum hemorrhage was the only independent predictor of emergency delivery (aOR: 4.3, 95% confidence interval 2.4-7.7). Emergency delivery due to vaginal bleeding was more frequent with false-positive cases (antenatally suspected but not confirmed as PAS at delivery) and the milder grades of PAS (accreta/increta). The rate of infants experiencing any major neonatal morbidity was 25% at 34+1 to 36+0 weeks and 19% at >36+0 weeks. CONCLUSIONS Emergency delivery in centers of excellence did not increase blood loss, transfusion rates or maternal morbidity. The single greatest risk factor for emergency delivery was antenatal hemorrhage. When adequate expertise and resources are available, to defer delivery in women with no significant antenatal bleeding and no risk factors for pre-term birth until >36+0 weeks can be considered to improve fetal outcomes. Further studies are needed to investigate this fully.
Collapse
Affiliation(s)
- Maddalena Morlando
- Department of Neuroscience, Reproductive Sciences and Dentistry, University of Naples Federico II, Naples, Italy.,Department of Woman, Child and of General and Specialized Surgery, University "Luigi Vanvitelli", Naples, Italy
| | - Alexander Schwickert
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Obstetrics, Berlin, Germany
| | - Vedran Stefanovic
- Department of Obstetrics and Gynecology, Fetomaternal Medical Center, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
| | - Mina M Gziri
- Department of Obstetrics, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - Petra Pateisky
- Department of Obstetrics and Gynecology, Division of Obstetrics and Feto-Maternal Medicine, Medical University of Vienna, Vienna, Austria
| | - Kinga M Chalubinski
- Department of Obstetrics and Gynecology, Division of Obstetrics and Feto-Maternal Medicine, Medical University of Vienna, Vienna, Austria
| | - Andreas Nonnenmacher
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Obstetrics, Berlin, Germany
| | - Olivier Morel
- Women's Division, Nancy Regional and University Hospital Center (CHRU), Université de Lorraine, Nancy, France.,Diagnosis and International Adaptive Imaging (IADI), Inserm, Université de Lorraine, Nancy, France
| | - Thorsten Braun
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Obstetrics, Berlin, Germany.,Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of 'Experimental Obstetrics', Berlin, Germany
| | - Charline Bertholdt
- Women's Division, Nancy Regional and University Hospital Center (CHRU), Université de Lorraine, Nancy, France.,Diagnosis and International Adaptive Imaging (IADI), Inserm, Université de Lorraine, Nancy, France
| | | | - Sally L Collins
- Nuffield Department of Women's and Reproductive Health, University of Oxford, Oxford, UK.,Fetal Medicine Unit, John Radcliffe Hospital, Oxford, UK
| | | |
Collapse
|
3
|
Long SY, Yang Q, Chi R, Luo L, Xiong X, Chen ZQ. Maternal and Neonatal Outcomes Resulting from Antepartum Hemorrhage in Women with Placenta Previa and Its Associated Risk Factors: A Single-Center Retrospective Study. Ther Clin Risk Manag 2021; 17:31-38. [PMID: 33469297 PMCID: PMC7811482 DOI: 10.2147/tcrm.s288461] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 12/21/2020] [Indexed: 11/23/2022] Open
Abstract
Purpose Antepartum hemorrhage (APH) in women with placenta previa (PP) has been associated with increased perinatal complications. The present study aims to evaluate the maternal and neonatal outcomes, and risk factors related to this condition. Methods This retrospective study was conducted in the Obstetrics and Gynecology Department of the Second Affiliated Hospital of Army Military Medical University from January 2016 to September 2019, which included all women with PP. The clinical and ultrasound features in patients with or without APH were compared. Results There were 233 women with APH and 302 women without APH in the cohort. Most of the women with APH were prone to adverse maternal and neonatal outcomes. In the logistic regression analysis, cervical length was inversely correlated to APH (OR: 0.972, 95% CI: 0.952~0.993), while complete PP increased the risk for APH (OR: 2.121, 95% CI: 1.208~3.732). Furthermore, the anterior placenta increased the risk for APH (OR: 1.664, 95% CI: 1.139~2.430), the partial absence of the over lying myometrium increased the risk for APH (OR: 2.015, 95% CI: 1.293~3.141), and the previous history of uterine artery embolization (UAE) increased the highest risk for APH (OR: 11.706, 95% CI: 1.424~96.195). Conclusion Obstetricians should be aware of the increased risk of adverse pregnancy outcomes related to APH in women with complete PP, short cervical length, anterior placenta, and partially absent over lying myometrium. Prior UAE is a novel risk factor associated with increased prevalence of APH.
Collapse
Affiliation(s)
- Shu-Yu Long
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Army Medical University, Chongqing 400037, People's Republic of China
| | - Qiong Yang
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Army Medical University, Chongqing 400037, People's Republic of China
| | - Rui Chi
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Army Medical University, Chongqing 400037, People's Republic of China
| | - Li Luo
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Army Medical University, Chongqing 400037, People's Republic of China
| | - Xi Xiong
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Army Medical University, Chongqing 400037, People's Republic of China
| | - Zheng-Qiong Chen
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Army Medical University, Chongqing 400037, People's Republic of China
| |
Collapse
|
4
|
Collins SL, Alemdar B, van Beekhuizen HJ, Bertholdt C, Braun T, Calda P, Delorme P, Duvekot JJ, Gronbeck L, Kayem G, Langhoff-Roos J, Marcellin L, Martinelli P, Morel O, Mhallem M, Morlando M, Noergaard LN, Nonnenmacher A, Pateisky P, Petit P, Rijken MJ, Ropacka-Lesiak M, Schlembach D, Sentilhes L, Stefanovic V, Strindfors G, Tutschek B, Vangen S, Weichert A, Weizsäcker K, Chantraine F. Evidence-based guidelines for the management of abnormally invasive placenta: recommendations from the International Society for Abnormally Invasive Placenta. Am J Obstet Gynecol 2019; 220:511-526. [PMID: 30849356 DOI: 10.1016/j.ajog.2019.02.054] [Citation(s) in RCA: 170] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 02/13/2019] [Accepted: 02/27/2019] [Indexed: 11/28/2022]
Abstract
The worldwide incidence of abnormally invasive placenta is rapidly rising, following the trend of increasing cesarean delivery. It is a heterogeneous condition and has a high maternal morbidity and mortality rate, presenting specific intrapartum challenges. Its rarity makes developing individual expertise difficult for the majority of clinicians. The International Society for Abnormally Invasive Placenta aims to improve clinicians' understanding and skills in managing this difficult condition. By pooling knowledge, experience, and expertise gained within a variety of different healthcare systems, the Society seeks to improve the outcomes for women with abnormally invasive placenta globally. The recommendations presented herewith were reached using a modified Delphi technique and are based on the best available evidence. The evidence base for each is presented using a formal grading system. The topics chosen address the most pertinent questions regarding intrapartum management of abnormally invasive placenta with respect to clinically relevant outcomes, including the following: definition of a center of excellence; requirement for antenatal hospitalization; antenatal optimization of hemoglobin; gestational age for delivery; antenatal corticosteroid administration; use of preoperative cystoscopy, ureteric stents, and prophylactic pelvic arterial balloon catheters; maternal position for surgery; type of skin incision; position of the uterine incision; use of interoperative ultrasound; prophylactic administration of oxytocin; optimal method for intraoperative diagnosis; use of expectant management; adjuvant therapies for expectant management; use of local surgical resection; type of hysterectomy; use of delayed hysterectomy; intraoperative measures to treat life-threatening hemorrhage; and fertility after conservative management.
Collapse
Affiliation(s)
- Sally L Collins
- Nuffield Department of Women's and Reproductive Health, University of Oxford, Oxford, UK; The Fetal Medicine Unit, John Radcliffe Hospital, Oxford, UK.
| | - Bahrin Alemdar
- Department of Obstetrics and Gynecology, South General Hospital, Stockholm, Sweden
| | | | - Charline Bertholdt
- Centre Hospitalier Régional Universitaire de Nancy, Université de Lorraine, France
| | - Thorsten Braun
- Departments of Obstetrics and Division of Experimental Obstetrics, Charité Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Campus Virchow-Klinikum and Campus Charité Mitte, Berlin, Germany
| | - Pavel Calda
- Department of Obstetrics and Gynecology, General Faculty Hospital, Charles University, Prague, Czech Republic
| | - Pierre Delorme
- Port-Royal Maternity Unit, Cochin Hospital, Paris-Descartes University, DHU Risk and Pregnancy, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Johannes J Duvekot
- Department of Obstetrics and Gynecology, Erasmus Medical Center Rotterdam, Rotterdam, Netherlands
| | - Lene Gronbeck
- Department of Obstetrics, Rigshospitalet, University of Copenhagen, Denmark
| | - Gilles Kayem
- Department of Obstetrics and Gynecology, Hôpital Trousseau, Assistance Publique des Hôpitaux de Paris, Sorbonne University, Paris, France
| | - Jens Langhoff-Roos
- Department of Obstetrics, Rigshospitalet, University of Copenhagen, Denmark
| | - Louis Marcellin
- Department of Gynecology Obstetrics II and Reproductive Medicine, Hôpitaux Universitaires Paris Centre, Hôpital Cochin, APHP; Sorbonne Paris Cité, Université Paris Descartes, Faculté de Médecine, Paris, France
| | - Pasquale Martinelli
- Department of Neuroscience, Reproductive Sciences and Dentistry, University of Naples Federico II, Naples, Italy
| | - Olivier Morel
- Centre Hospitalier Régional Universitaire de Nancy, Université de Lorraine, France
| | - Mina Mhallem
- Department of Obstetrics, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - Maddalena Morlando
- Department of Neuroscience, Reproductive Sciences and Dentistry, University of Naples Federico II, Naples, Italy; Department of Women, Children and of General and Specialized Surgery, University "Luigi Vanvitelli", Naples, Italy
| | - Lone N Noergaard
- Department of Obstetrics, Rigshospitalet, University of Copenhagen, Denmark
| | - Andreas Nonnenmacher
- Departments of Obstetrics and Division of Experimental Obstetrics, Charité Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Campus Virchow-Klinikum and Campus Charité Mitte, Berlin, Germany
| | - Petra Pateisky
- Department of Obstetrics and Gynecology, Division of Obstetrics and Feto-Maternal Medicine, Medical University of Vienna, Vienna, Austria
| | - Philippe Petit
- Department of Obstetrics and Gynecology, CHR Citadelle, University of Liege, Liege, Belgium
| | - Marcus J Rijken
- Vrouw & Baby, University Medical Centre Utrecht, Utrecht University, Utrecht, Netherlands
| | - Mariola Ropacka-Lesiak
- Department of Perinatology and Gynecology, University of Medical Sciences, Poznan, Poland
| | - Dietmar Schlembach
- Vivantes Network for Health, Clinicum Neukoelln, Clinic for Obstetric Medicine, Berlin, Germany
| | - Loïc Sentilhes
- Department of Obstetrics and Gynecology, Hôpital Pellegrin, CHU de Bordeaux, Bordeaux, France
| | - Vedran Stefanovic
- Department of Obstetrics and Gynecology, Fetomaternal Medical Center, Helsinki University Hospital and University of Helsinki, Finland
| | - Gita Strindfors
- Department of Obstetrics and Gynecology, South General Hospital, Stockholm, Sweden
| | - Boris Tutschek
- Prenatal Zurich, Zürich, Switzerland; Heinrich Heine University, Düsseldorf, Germany
| | - Siri Vangen
- Division of Obstetrics and Gynaecology, Norwegian National Advisory Unit on Women's Health, Oslo University Hospital, Rikshospitalet and Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Alexander Weichert
- Departments of Obstetrics and Division of Experimental Obstetrics, Charité Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Campus Virchow-Klinikum and Campus Charité Mitte, Berlin, Germany
| | - Katharina Weizsäcker
- Departments of Obstetrics and Division of Experimental Obstetrics, Charité Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Campus Virchow-Klinikum and Campus Charité Mitte, Berlin, Germany
| | - Frederic Chantraine
- Department of Obstetrics and Gynecology, CHR Citadelle, University of Liege, Liege, Belgium
| |
Collapse
|
5
|
Abstract
The term "morbidly adherent placenta" has recently been introduced to describe the spectrum of disorders including placenta accreta, increta and percreta. Due to excessive invasion of the placenta into the uterus there is associated significant maternal morbidity and mortality. Most significant risk factors for morbidly adherent placenta include history of prior cesarean delivery as well as placenta previa in the current pregnancy. Ultrasound remains the gold standard for antenatal diagnosis, however, in recent years MRI has assisted in identifying complex parametrial involvement. Optimizing maternal and neonatal outcomes involves early prenatal diagnosis, a multi-disciplinary team-based approach, and referral to an experienced center.
Collapse
Affiliation(s)
- Whitney Booker
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, College of Physicians and Surgeons, Columbia University Medical Center, 622 West 168th Street, New York, NY 10032, United States.
| | - Leslie Moroz
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, College of Physicians and Surgeons, Columbia University Medical Center, 622 West 168th Street, New York, NY 10032, United States
| |
Collapse
|
6
|
Rac MWF, McIntire DD, Wells CE, Moschos E, Twickler DD. Cervical Length in Patients at Risk for Placenta Accreta. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2017; 36:1431-1436. [PMID: 28339114 DOI: 10.7863/ultra.16.05059] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Accepted: 09/22/2016] [Indexed: 06/06/2023]
Abstract
OBJECTIVES To evaluate cervical length measurements in women with placenta accreta compared to women with a nonadherent low-lying placenta or placenta previa and evaluate this relationship in terms of vaginal bleeding, preterm labor, and preterm birth. METHODS We conducted a retrospective cohort study between 1997 and 2011 of gravidas with more than 1 prior cesarean delivery who had a transvaginal ultrasound examination between 24 and 34 weeks for a low-lying placenta or placenta previa. Cervical length was measured from archived images in accordance with national guidelines by a single investigator, who was blinded to outcomes and ultrasound reports. The diagnosis of placental accreta was based on histologic confirmation. For study purposes, preterm birth was defined as less than 36 weeks, and cervical lengths of 3 cm or less were considered short. Standard statistical analyses were used. RESULTS A total of 125 patients met inclusion criteria. The cohort was divided into patients with (n = 43 [34%]) and without (n = 82 [66%]) placenta accreta and stratified by gestational age at the ultrasound examinations. Women with placenta accreta had shorter cervical length measurements during their 32- to 34-week ultrasound examinations (mean ± SD, 3.23 ± 0.98 versus 3.95 ± 1.0 cm; P < .01) and were more likely to have a short cervix of 3 cm or less (P = .001). However, these findings did not correlate with the degree of invasion (P = .3), or higher rates of vaginal bleeding and preterm labor (P = .19) resulting in preterm birth before 36 weeks (P = .64). CONCLUSIONS Women with placenta accreta had shorter cervical lengths at 32 to 34 weeks than women with a nonadherent low-lying placenta or placenta previa, but this finding did not correlate with a higher risk of vaginal bleeding or preterm labor resulting in preterm birth before 36 weeks.
Collapse
Affiliation(s)
- Martha W F Rac
- Departments of Obstetrics and Gynecology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Donald D McIntire
- Departments of Obstetrics and Gynecology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - C Edward Wells
- Departments of Obstetrics and Gynecology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Elysia Moschos
- Departments of Obstetrics and Gynecology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Diane D Twickler
- Departments of Obstetrics and Gynecology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| |
Collapse
|
7
|
Jauniaux E, Bhide A. Prenatal ultrasound diagnosis and outcome of placenta previa accreta after cesarean delivery: a systematic review and meta-analysis. Am J Obstet Gynecol 2017; 217:27-36. [PMID: 28268196 DOI: 10.1016/j.ajog.2017.02.050] [Citation(s) in RCA: 161] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Revised: 02/21/2017] [Accepted: 02/25/2017] [Indexed: 11/26/2022]
Abstract
BACKGROUND Women with a history of previous cesarean delivery, presenting with a placenta previa, have become the largest group with the highest risk for placenta previa accreta. OBJECTIVE The objective of the study was to evaluate the accuracy of ultrasound imaging in the prenatal diagnosis of placenta accreta and the impact of the depth of villous invasion on management in women presenting with placenta previa or low-lying placenta and with 1 or more prior cesarean deliveries. STUDY DESIGN AND DATA SOURCES We searched PubMed, Google Scholar, clinicalTrials.gov, and MEDLINE for studies published between 1982 and November 2016. STUDY ELIGIBILITY CRITERIA Criteria for the study were cohort studies that provided data on previous mode of delivery, placenta previa, or low-lying placenta on prenatal ultrasound imaging and pregnancy outcome. The initial search identified 171 records, of which 5 retrospective and 9 prospective cohort studies were eligible for inclusion in the quantitative analysis. STUDY APPRAISAL AND SYNTHESIS METHODS The studies were scored on methodological quality using the Quality Assessment of Diagnostic Accuracy Studies tool. RESULTS The 14 cohort studies included 3889 pregnancies presenting with placenta previa or low-lying placenta and 1 or more prior cesarean deliveries screened for placenta accreta. There were 328 cases of placenta previa accreta (8.4%), of which 298 (90.9%) were diagnosed prenatally by ultrasound. The incidence of placenta previa accreta was 4.1% in women with 1 prior cesarean and 13.3% in women with ≥2 previous cesarean deliveries. The pooled performance of ultrasound for the antenatal detection of placenta previa accreta was higher in prospective than retrospective studies, with a diagnostic odds ratios of 228.5 (95% confidence interval, 67.2-776.9) and 80.8 (95% confidence interval, 13.0-501.4), respectively. Only 2 studies provided detailed data on the relationship between the depth of villous invasion and the number of previous cesarean deliveries, independently of the depth of the villous invasion. A cesarean hysterectomy was performed in 208 of 232 cases (89.7%) for which detailed data on management were available. Positive correlations were found in the largest prospective studies between the cumulative rates of the more invasive forms of accreta placentation and the sensitivity and specificity of ultrasound imaging but not with diagnostic odds ratio values. We found no data on the ultrasound screening of placenta accreta at the routine midtrimester ultrasound examination from the nonexpert ultrasound units. CONCLUSION Planning individual management for delivery is possible only with accurate evaluation of prenatal risk of accreta placentation in women presenting with a low-lying placenta/previa and a history of prior cesarean delivery. Ultrasound is highly sensitive and specific in the prenatal diagnosis of accreta placentation when performed by skilled operators. Developing a prenatal screening protocol is now essential to further improve the outcome of this increasingly more common major obstetric complication.
Collapse
|
8
|
Jauniaux E, Collins SL, Jurkovic D, Burton GJ. Accreta placentation: a systematic review of prenatal ultrasound imaging and grading of villous invasiveness. Am J Obstet Gynecol 2016; 215:712-721. [PMID: 27473003 DOI: 10.1016/j.ajog.2016.07.044] [Citation(s) in RCA: 128] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2016] [Revised: 07/02/2016] [Accepted: 07/20/2016] [Indexed: 12/16/2022]
Abstract
BACKGROUND Determining the depth of villous invasiveness before delivery is pivotal in planning individual management of placenta accreta. We have evaluated the value of various ultrasound signs proposed in the international literature for the prenatal diagnosis of accreta placentation and assessment of the depth of villous invasiveness. OBJECTIVE We undertook a PubMed and MEDLINE search of the relevant studies published from the first prenatal ultrasound description of placenta accreta in 1982 through March 30, 2016, using key words "placenta accreta," "placenta increta," "placenta percreta," "abnormally invasive placenta," "morbidly adherent placenta," and "placenta adhesive disorder" as related to "sonography," "ultrasound diagnosis," "prenatal diagnosis," "gray-scale imaging," "3-dimensional ultrasound", and "color Doppler imaging." STUDY DESIGN The primary eligibility criteria were articles that correlated prenatal ultrasound imaging with pregnancy outcome. A total of 84 studies, including 31 case reports describing 38 cases of placenta accreta and 53 series describing 1078 cases were analyzed. Placenta accreta was subdivided into placenta creta to describe superficially adherent placentation and placenta increta and placenta percreta to describe invasive placentation. RESULTS Of the 53 study series, 23 did not provide data on the depth of villous myometrial invasion on ultrasound imaging or at delivery. Detailed correlations between ultrasound findings and placenta accreta grading were found in 72 cases. A loss of clear zone (62.1%) and the presence of bridging vessels (71.4%) were the most common ultrasound signs in cases of placenta creta. In placenta increta, a loss of clear zone (84.6%) and subplacental hypervascularity (60%) were the most common ultrasound signs, whereas placental lacunae (82.4%) and subplacental hypervascularity (54.5%) were the most common ultrasound signs in placenta percreta. No ultrasound sign or a combination of ultrasound signs were specific of the depth of accreta placentation. CONCLUSION The wide heterogeneity in terminology used to describe the grades of accreta placentation and differences in study design limits the evaluation of the accuracy of ultrasound imaging in the screening and diagnosis of placenta accreta. This review emphasizes the need for further prospective studies using a standardized evidence-based approach including a systematic correlation between ultrasound signs of placenta accreta and detailed clinical and pathologic examinations at delivery.
Collapse
Affiliation(s)
- Eric Jauniaux
- Department of Obstetrics and Gynecology, University College London Hospitals and University College London Institute for Women's Health, University College London, London, United Kingdom.
| | - Sally L Collins
- Nuffield Department of Obstetrics and Gynecology, University of Oxford, and the Fetal Medicine Unit, John Radcliffe Hospital, Oxford, United Kingdom
| | - Davor Jurkovic
- Department of Obstetrics and Gynecology, University College London Hospitals and University College London Institute for Women's Health, University College London, London, United Kingdom
| | - Graham J Burton
- Center for Trophoblast Research, Department of Physiology, Development, and Neuroscience, University of Cambridge, Cambridge, United Kingdom
| |
Collapse
|
9
|
Placental implantation abnormalities and risk of preterm delivery: a systematic review and metaanalysis. Am J Obstet Gynecol 2015; 213:S78-90. [PMID: 26428506 DOI: 10.1016/j.ajog.2015.05.058] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Revised: 05/02/2015] [Accepted: 05/26/2015] [Indexed: 11/23/2022]
Abstract
We sought to evaluate the extent of the association between placental implantation abnormalities (PIA) and preterm delivery in singleton gestations. We conducted a systematic review of English-language articles published from 1980 onward using PubMed, MEDLINE, EMBASE, CINAHL, LILACS, and Google Scholar, and by identifying studies cited in the references of published articles. Search terms were PIA defined as ≥ 1 of the following: placenta previa, placenta accreta, vasa previa, and velamentous cord insertion. Observational and experimental studies were included for review if data were available regarding any of the aforementioned PIA and regarding gestational age at delivery or preterm delivery. Case reports and case series were excluded. Studies were reviewed and data extracted. The primary outcome was gestational age at delivery or preterm delivery <37 weeks' gestation. Secondary outcomes included birthweight, 1- and 5-minute Apgar scores, neonatal intensive care unit (NICU) admission, neonatal and perinatal death, and small for gestational age. Of the 1421 studies identified, 79 met the defined criteria; 56 studies were descriptive and 23 were comparative. Based on the descriptive studies, the preterm delivery rates for low-lying/marginal placenta, placenta previa, placenta accreta, vasa previa, and velamentous cord insertion were 26.9%, 43.5%, 57.7%, 81.9%, and 37.5%, respectively. Based on the comparative studies using controls, there was decreased pregnancy duration for every PIA; more specifically, there was an increased risk for preterm delivery in patients with placenta previa (risk ratio [RR], 5.32; 95% confidence interval [CI], 4.39-6.45), vasa previa (RR, 3.36; 95% CI, 2.76-4.09), and velamentous cord insertion (RR, 1.95; 95% CI, 1.67-2.28). Risks of NICU admissions (RR, 4.09; 95% CI, 2.80-5.97), neonatal death (RR, 5.44; 95% CI, 3.03-9.78), and perinatal death (RR, 3.01; 95% CI, 1.41-6.43) were higher with placenta previa. Perinatal risks were also higher in patients with vasa previa (perinatal death rate RR, 4.52; 95% CI, 2.77-7.39) and velamentous cord insertion (NICU admissions [RR, 1.76; 95% CI, 1.68-1.84], small for gestational age [RR, 1.69; 95% CI, 1.56-1.82], and perinatal death [RR, 2.15; 95% CI, 1.84-2.52]). In singleton gestations, there is a strong association between PIA and preterm delivery resulting in significant perinatal morbidity and mortality.
Collapse
|
10
|
D'Antonio F, Iacovella C, Bhide A. Prenatal identification of invasive placentation using ultrasound: systematic review and meta-analysis. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2013; 42:509-517. [PMID: 23943408 DOI: 10.1002/uog.13194] [Citation(s) in RCA: 195] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 07/31/2013] [Indexed: 06/02/2023]
Abstract
OBJECTIVE The accuracy of prospective sonographic prenatal detection of invasive placentation is unclear. The objective of this study was to conduct a systematic review and meta-analysis to assess the performance of ultrasound in at-risk women for prenatal identification of invasive placentation. METHODS MEDLINE, EMBASE, The Cochrane Database of Systematic Reviews, Database of Abstracts of Reviews of Effects (DARE) and The Cochrane Central Register of Controlled Trials (CENTRAL) were searched using the search terms 'placenta accreta', 'placenta increta', 'placenta percreta', 'ultrasound', 'magnetic resonance imaging (MRI)', 'invasive placenta' and 'infiltrative placenta'. Two authors independently abstracted data from the articles. Sensitivity, specificity, positive and negative likelihood ratios (LR+ and LR-), the diagnostic odds ratio (DOR) and their 95% CIs for each study were calculated. Forest plots and summary receiver-operating characteristics curves were produced. Between-study heterogeneity was explored both graphically and statistically. The MOOSE (meta-analysis of observational studies in epidemiology) guidelines were followed. RESULTS Twenty-three studies involving 3707 pregnancies at risk for invasive placentation were included. The overall performance of ultrasound for the antenatal detection of invasive placentation was as follows: sensitivity, 90.72 (95% CI, 87.2-93.6)%; specificity, 96.94 (95% CI, 96.3-97.5)%; LR+, 11.01 (95% CI, 6.1-20.0); LR-, 0.16 (95% CI, 0.11-0.23); and DOR, 98.59 (95% CI, 48.8-199.0). Among the different ultrasound signs, color Doppler had the best predictive accuracy (sensitivity, 90.74 (95% CI, 85.2-94.7)%; specificity, 87.68 (95% CI, 84.6-90.4)%; LR+, 7.77 (95% CI, 3.3-18.4); LR-, 0.17 (95% CI, 0.10-0.29); and DOR, 69.02 (95% CI, 22.8-208.9)). CONCLUSIONS Ultrasound has a high accuracy for prenatal diagnosis of disorders of invasive placentation in high-risk women. The use of color Doppler improves the test performance.
Collapse
Affiliation(s)
- F D'Antonio
- Fetal Medicine Unit, Division of Developmental Sciences, St George's University of London, London, UK
| | | | | |
Collapse
|