Vasa previa: Another ultrasound sign and caution at cesarean section

Matsubara, Shigeki; Kuwata, Tomoyuki; Takahashi, Hironori; Suzuki, Hiroyoshi

doi:10.3109/14767058.2015.1038233

Cited by 4 publications

(1 citation statement)

References 7 publications

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“…Prenatal recognitions of VP and VCI provide elective delivery, thus avoiding potential fetal demise and neonatal morbidity [ 8 , 29 ]. However, an increase in missed cases of VP is usually seen when the ultrasound examination does not involve color Doppler [ 1 ].…”

Section: Discussionmentioning

confidence: 99%

[Retracted] The Diagnostic Accuracy of Transabdominal and Transvaginal Color Doppler Ultrasound for Pregnant Women with Vasa Previa and Velamentous Cord Insertion

Liu

Zhang

Liu

2022

Journal of Environmental and Public Health

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Objective. The objective of this study is to evaluate feasibility and accuracy of transabdominal color Doppler ultrasound (TA-CDUS) and transvaginal color Doppler ultrasound (TV-CDUS) as screening methods for pregnant women with vasa previa (VP) and velamentous cord insertion (VCI). Methods. A retrospective diagnostic accuracy study was performed on 5,434 pregnant women from 2018 to 2021, who underwent both TA-CDUS and TV-CDUS. Diagnostic performance of TA-CDUS and TV-CDUS was determined using specificity, positive predictive value (PPV), negative predictive value (NPV), accuracy, and positive and negative likelihood ratios (LR+ and LR-), using the delivery information (gross examination) as the “Gold-standard”. Patient records were reviewed for demographics and diagnosis. Results. The combination of VP and VCI was diagnosed in 37/5434 (0.68%) women at delivery. The sensitivity, specificity, PPV, NPV, and overall test accuracy of TA-CDUS were 72.97%, 99.85%, 77.14%, 99.81%, and 99.67%, respectively, for diagnosing VP with VCI. The corresponding values for TV-CDUS were 89.19%, 99.87%, 82.50%, 99.93%, and 99.80%, respectively. Moreover, the sensitivity of combination of TA-CDUS and TA-CDUS in determining VP with VCI was 97.30%, specificity 99.98%, PPV 97.30%, NPV 99.98%, and accuracy 99.96%. No significant difference in the misdiagnosis and missed diagnosis was found between the examination by TA-CDUS and TV-CDUS. Conclusions. Both TA-CDUS and TV-CDUS can be acceptable diagnostic tools for assessment of pregnant women with VP and VCI, with a better application of TV-CDUS with higher accuracy. The combination of TA-CDUS and TV-CDUS could provide an objective imaging basis for choosing clinical treatment strategies and predicting prognosis.

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Section: Discussionmentioning

confidence: 99%