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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
medicine
The diagnostic accuracy of endovaginal and transperineal ultrasound for detecting anal sphincter defects: The PREDICT study
Clinical Radiology, Volume 66, No. 7, Year 2011
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Description
Aim: To determine the accuracy and predictive value of transperineal (TPU) and endovaginal ultrasound (EVU) in the detection of anal sphincter defects in women with obstetric anal sphincter injuries and/or postpartum symptoms of faecal incontinence. Materials and methods: One hundred and sixty-five women were recruited, four women were excluded as they were seen years after their last delivery. TPU and EVU, followed by endonanal ultrasound (EAU), were performed using the B&K Viking 2400 scanner. Sensitivity and specificity, as well as predictive values with 95% confidence intervals, for detecting anal sphincter defects were calculated for EVU and TPU, using EAU as the reference standard. Results: On EAU a defect was found in 42 (26%) women: 39 (93%) had an external (EAS) and 23 (55%) an internal anal sphincter (IAS) defect. Analysable images of one level of the EAS combined with an analysable IAS were available in 140 (87%) women for EVU and in 131 (81%) for TPU. The sensitivity and specificity for the detection of any defect was 48% (30-67%) and 85% (77-91%) for EVU and 64% (44-81%) and 85% (77-91%) for TPU, respectively. Conclusion: Although EAU using a rotating endoprobe is the validated reference standard in the identification of anal sphincter defects, it is not universally available. However while TPU and/or EVU with conventional ultrasound probes can be useful in identifying normality, for clinical purposes they are not sensitive enough to identify an underlying sphincter defect. © 2011 The Royal College of Radiologists. Published by Elsevier Ltd. All rights reserved.
Authors & Co-Authors
Roos, Anne Marie
United Kingdom, Croydon
Croydon University Hospital
Abdool, Zeelha
South Africa, Pretoria
University of Pretoria
Sultan, Abdul Hameed
United Kingdom, Croydon
Croydon University Hospital
Thakar, Ranee B.
United Kingdom, Croydon
Croydon University Hospital
Statistics
Citations: 49
Authors: 4
Affiliations: 2
Identifiers
Doi:
10.1016/j.crad.2010.11.017
e-ISSN:
1365229X
Research Areas
Maternal And Child Health
Violence And Injury
Participants Gender
Female