Sonographic Association of Placenta Accreta Spectrum In Patients of Placenta Previa - A Systematic Review

Aim: To determine the diagnostic accuracy and epidemiology of placenta accreta spectrum (PAS) in patients of placenta previa. Design: Systematic review. Methods: PubMed, Google Scholar, ClinicalTrials.gov and MEDLINE were searched between January1992 and December 2020. Studies on placenta previa complicated by PAS diagnosed in a defined obstetric population. This research was carried out using standard methods and protocols and keeping in view Newcastle-Ottawa scale for observation and assessment of case study along with the difference approved by consensus. The overall diagnostic accuracy of ultrasonographic findings is the main outcome of this study, whereas the prevalence of placenta accreta in patients of placenta previa and its incidence among different countries all over the world is also described. Results: In this review study, about 300 articles were evaluated. More over about 15 prospective and 14 retrospective case studies incorporated for assessment having complication with placenta previa and PAS. According to the meta-analysis, a significant (p<0.001) heterogeneity was found between case research that evaluate PAS prevalence and incidence in the placenta previa cohort. The median prevalence in case of placenta previa along with PAS came out to be 0.113% (IQR 0.048–0.17).Whereas incidence in females having placenta previa along with complication of PAS came out to be 11.3% (IQR 7.3–20.0). The overall median sensitivity of the ultrasound to find cases of placenta accreta spectrum in patients of placenta previa is 83.33 %( IQR 77.0-94.34) and specificity is 95.9 %( IQR 88.0-98.4). Conclusions: The high level of diversity observed in results obtained by diagnostic and qualitative data showed strong emphasis should be made on implementation of standard methods and protocols for assessment and diagnosis of pregnancy complication like placenta previa, its type and PAS. However, transvaginal and transabdominal ultrasound remains the gold standard diagnostic tool for placenta previa and placenta accreta spectrum. Keywords: Placenta accrete, placenta previa, sonography

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Sonographic Association Of Placenta Accreta Spectrum In Patients Of Placenta Previa-A Systematic Review

10.53350/pjmhs2115113050 ◽

2021 ◽

Vol 15 (11) ◽

pp. 3050-3053

Author(s):

Maida Saadat ◽

Muhammad Mawaz Anjum ◽

Faiza Farooq ◽

Rehan Aslam Gill ◽

Abeer Yasin ◽

...

Keyword(s):

Diagnostic Accuracy ◽

Placenta Accreta ◽

Placenta Previa ◽

Meta Analysis ◽

Retrospective Case ◽

Standard Methods ◽

Placenta Accreta Spectrum ◽

The Difference ◽

Obstetric Population ◽

High Level

Aim: To determine the diagnostic accuracy and epidemiology of placenta accreta spectrum (PAS) in patients of placenta previa. Methods: PubMed, Google Scholar, ClinicalTrials.gov and MEDLINE were searched between January1992 and December 2020. Studies on placenta previa complicated by PAS diagnosed in a defined obstetric population. This research was carried out using standard methods and protocols and keeping in view Newcastle-Ottawa scale for observation and assessment of case study along with the difference approved by consensus. The overall diagnostic accuracy of ultrasonographic findings is the main outcome of this study, whereas the prevalence of placenta accreta in patients of placenta previa and its incidence among different countries all over the world is also described. Results: In this review study, about 300 articles were evaluated. More over about 15 prospective and 14 retrospective case studies incorporated for assessment having complication with placenta previa and PAS. According to the meta-analysis, a significant (p<0.001) heterogeneity was found between case research that evaluate PAS prevalence and incidence in the placenta previa cohort. The median prevalence in case of placenta previa along with PAS came out to be 0.113% (IQR 0.048–0.17).Whereas incidence in females having placenta previa along with complication of PAS came out to be 11.3%. Conclusions: The high level of diversity observed in results obtained by diagnostic and qualitative data showed strong emphasis should be made on implementation of standard methods and protocols for assessment and diagnosis of pregnancy complication like placenta previa, its type and PAS. Keywords: Sonography placenta previa, placenta accreta spectrum

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VP46.05: Risk factors, histopathology and diagnostic accuracy of posterior placenta accreta spectrum disorders: systematic review and meta‐analysis

Ultrasound in Obstetrics and Gynecology ◽

10.1002/uog.23070 ◽

2020 ◽

Vol 56 (S1) ◽

pp. 269-269

Author(s):

S. Tinari ◽

D. Buca ◽

G. Cali ◽

I.E. Timor‐Tritsch ◽

J. Palacios‐Jaraquemada ◽

...

Keyword(s):

Risk Factors ◽

Systematic Review ◽

Diagnostic Accuracy ◽

Placenta Accreta ◽

Meta Analysis ◽

Placenta Accreta Spectrum ◽

Spectrum Disorders

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Epidemiology of placenta previa accreta: a systematic review and meta-analysis

BMJ Open ◽

10.1136/bmjopen-2019-031193 ◽

2019 ◽

Vol 9 (11) ◽

pp. e031193 ◽

Cited By ~ 9

Author(s):

Eric Jauniaux ◽

Lene Grønbeck ◽

Catey Bunce ◽

Jens Langhoff-Roos ◽

Sally L Collins

Keyword(s):

Systematic Review ◽

Placenta Previa ◽

Data Extraction ◽

Meta Analysis ◽

Eligibility Criteria ◽

Registration Number ◽

Newcastle Ottawa Scale ◽

Placenta Accreta Spectrum ◽

Obstetric Population ◽

Ottawa Scale

ObjectiveTo estimate the prevalence and incidence of placenta previa complicated by placenta accreta spectrum (PAS) and to examine the different criteria being used for the diagnosis.DesignSystematic review and meta-analysis.Data sourcesPubMed, Google Scholar, ClinicalTrials.gov and MEDLINE were searched between August 1982 and September 2018.Eligibility criteriaStudies reporting on placenta previa complicated by PAS diagnosed in a defined obstetric population.Data extraction and synthesisTwo independent reviewers performed the data extraction using a predefined protocol and assessed the risk of bias using the Newcastle-Ottawa scale for observational studies, with difference agreed by consensus. The primary outcomes were overall prevalence of placenta previa, incidence of PAS according to the type of placenta previa and the reported clinical outcomes, including the number of peripartum hysterectomies and direct maternal mortality. The secondary outcomes included the criteria used for the prenatal ultrasound diagnosis of placenta previa and the criteria used to diagnose and grade PAS at birth.ResultsA total of 258 articles were reviewed and 13 retrospective and 7 prospective studies were included in the analysis, which reported on 587 women with placenta previa and PAS. The meta-analysis indicated a significant (p<0.001) heterogeneity between study estimates for the prevalence of placenta previa, the prevalence of placenta previa with PAS and the incidence of PAS in the placenta previa cohort. The median prevalence of placenta previa was 0.56% (IQR 0.39–1.24) whereas the median prevalence of placenta previa with PAS was 0.07% (IQR 0.05–0.16). The incidence of PAS in women with a placenta previa was 11.10% (IQR 7.65–17.35).ConclusionsThe high heterogeneity in qualitative and diagnostic data between studies emphasises the need to implement standardised protocols for the diagnoses of both placenta previa and PAS, including the type of placenta previa and grade of villous invasiveness.PROSPERO registration numberCRD42017068589

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