Role of transperineal sonography in diagnosis of placenta previa/accreta: A prospective study

Gouhar, Ghada K.; Sadek, Somayya M.; Siam, Soha; Ahmad, Reda A.

doi:10.1016/j.ejrnm.2012.08.004

Cited by 3 publications

(4 citation statements)

References 25 publications

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“…A total of 1018 articles were identified. After screening the abstracts, 107 full text articles were assessed with respect to their eligibility for inclusion (see Supplementary material, Table S2) and 20 studies were included in the systematic review (Table 1, Figure 2) (26)(27)(28)(29)(30)(31)(32)(33)(34)(35)(36)(37)(38)(39)(40)(41)(42)(43)(44)(45). These 20 studies included 3209 pregnancies at risk for AIP, mainly because of the presence of placenta previa and previous CS or uterine surgery.…”

Section: Resultsmentioning

confidence: 99%

“…Diagnostic accuracy of ultrasound in detecting the depth of placental invasion is shown in Table 2 andFigure 4. Only two studies (30,39) explored the role of ultrasound in identifying the ª 2017 Nordic Federation of Societies of Obstetrics and Gynecology, Acta Obstetricia et Gynecologica Scandinavica 97 (2018)[25][26][27][28][29][30][31][32][33][34][35][36][37] General characteristics of the studies included in the systematic review. of the invasion.…”

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confidence: 99%

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Diagnostic accuracy of ultrasound in detecting the severity of abnormally invasive placentation: a systematic review and meta‐analysis

Pagani

Calì

Acharya

et al. 2017

Acta Obstet Gynecol Scand

119

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Introduction. Our objective was to elucidate the overall diagnostic accuracy of ultrasound in detecting the severity of abnormally invasive placentation (AIP). Material and methods. Medline, Embase, CINAHL and The Cochrane databases were searched. The ultrasound signs explored were: loss of hypoechoic (clear) zone in the placental-uterine interface, placental lacunae, bladder wall interruption, myometrial thinning, focal exophitic mass, placental lacunar flow, subplacental vascularity, and uterovesical hypervascularity. Results. Twenty studies (3209 pregnancies) were included. Ultrasound had an overall good diagnostic accuracy in identifying the depth of placental invasion with sensitivities of 90.6%, 93.0%, 89.5%, and 81.2% for placenta accreta, increta, accreta/increta, and percreta, respectively; the corresponding specificities were 97.1%, 98.4%, 94.7%, and 98.9%. Placental lacunae had sensitivities of 74.8%, 88.6%, and 76.3% for the detection of placenta accreta, increta, and percreta, respectively. Sensitivity and specificity of loss of the clear zone in identifying placenta accreta were 74.9% and 92.0%, whereas the corresponding figures for placenta increta and percreta were 91.6% and 76.9%, and 88.1% and 71.1%. Lacunar flow had sensitivities of 81.2%, 84.3%, and 45.2% for the detection of placenta accreta, increta, and percreta respectively; the corresponding figures for specificity were 84.0%, 79.7%, and 75.3%. Sensitivity of uterovesical hypervascularity was low for the detection of placenta accreta (12.3%) but high for placenta increta (94.4%) and percreta (86.2%); the corresponding figures for specificity were 90.8%, 88.0% and 88.2%, respectively. Conclusions. Ultrasound has an overall good diagnostic accuracy in recognizing the depth and the topography of placental invasion.

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Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

Diagnostic accuracy of ultrasound in detecting the severity of abnormally invasive placentation: a systematic review and meta‐analysis

Pagani

Calì

Acharya

et al. 2017

Acta Obstet Gynecol Scand

119

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“…US Cervix Transperineal. To our knowledge, there is currently a paucity of literature to support the use of transperineal US for the initial evaluation of placenta previa, low-lying placenta, or vasa previa [33].…”

Section: Initial Imagingmentioning

confidence: 99%

ACR Appropriateness Criteria® Second and Third Trimester Vaginal Bleeding

Gyn¹,

Imaging

Shipp

et al. 2020

Journal of the American College of Radiology

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“…Also due to context-related conditions, all USS were transabdominal although endovaginal and transperineal routes are credited with greater sensitivity and specificity. [15][16][17][18][19] By the process of placental migration, the localization of the placenta may vary up to the end of the 3rd trimester. [20][21][22][23] Hence, a placenta described as low-lying in the 2nd trimester may be normally inserted in the majority of cases at term (54 à 94%), especially if anteriorly located.…”

Section: Limiting Factorsmentioning

confidence: 99%

Accuracy of Ultrasounds in the Diagnosis of Placenta Previa by Nonradiologists in Cameroon

Florent¹,

Ohanda²,

Fouedjio³

et al. 2016

Donald School Journal of Ultrasound in Obstetrics and Gynecology

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Objectives: Ultrasound evaluation could ensure early diagnoses prior to the onset of clinical manifestations. The use of ultrasound as a diagnostic tool for varying disease states is gaining ground in Africa; however, its operator dependence constitutes a major setback. Our main goal was to evaluate the accuracy of ultrasound in the diagnosis of placenta previa (PP) in Cameroon, and especially its use by nonradiologists. Materials and methods:We carried out a cross-sectional prospective study in the maternity unit of the Yaoundé Central Hospital during a period of 13 months (December 1, 2014 to December 31, 2015. Our study population involved women with prior cesarean section irrespective of the indication at least 28 weeks of gestational age. During surgery the diagnosis was confirmed. We included all women with a past history of cesarean section who underwent a 3rd trimester ultrasound scan (USS), especially in the last 4 weeks preceding the cesarean section. Results:The mean age of our study population was 28.02 years (± 6.13 years), with age extremes at 13 and 44 years respectively. Out of 761 women who underwent cesarean section, 153 had been diagnosed preoperatively with PP. All the USSs were transabdominal. Third trimester scans irrespective of the operator had a sensitivity of 82, and 99% specificity. Among the operators, radiologists and obstetricians had the best sensitivity rates (83 and 81% respectively) as against 71.4% among other operators. Conclusion:Ultrasound scanning is important in the antenatal period as a diagnostic tool for PP when carried out by radiologists and obstetricians. Routine use of the transvaginal and transperineal routes should be encouraged so as to gain in accuracy during 3rd trimester scanning. However, the nonradiologists need to be trained because of the accuracy lapses involving the USSs which they carry out.

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Role of transperineal sonography in diagnosis of placenta previa/accreta: A prospective study

Cited by 3 publications

References 25 publications

Diagnostic accuracy of ultrasound in detecting the severity of abnormally invasive placentation: a systematic review and meta‐analysis

Diagnostic accuracy of ultrasound in detecting the severity of abnormally invasive placentation: a systematic review and meta‐analysis

ACR Appropriateness Criteria® Second and Third Trimester Vaginal Bleeding

Accuracy of Ultrasounds in the Diagnosis of Placenta Previa by Nonradiologists in Cameroon

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