Clinical Trial: Anovaginal Distance, Interobserver Agreement

Study Status: Completed
Recruit Status: Completed
Study Type: Observational

Official Title: Interobserver Agreement in Perineal Ultrasound of the Anovaginal Distance- a Methodology-study

Brief Summary: Interobserver variation in measuring the anovaginal distance (AVD) with perineal ultrasound

Detailed Summary:

Aims: This study describes perineal ultrasound measurement of the AVD in regard to ease of learning and interobserver agreement, in order to establish if the method is reliable to use in further research about objective postpartum description of perineal tears.

Methods: To educate the examiners, the method was shown and described by an experienced examiner. The examiners then measured the anovaginal distance in one woman repeatedly with until similar results (+/- 5 mm ) were achieved. The woman was in the lithotomy position and a vaginal ultrasound probe was used. The AVD in another 40 women was then measured and documented by two examiners, right after the other, who were blinded to the other´s results. The distance was measured between the mucosal margin of the internal anal sphincter and the vaginal probe. Interobserver agreement was calculated using Kappa-score.


Sponsor: Ostergotland County Council, Sweden

Current Primary Outcome: interobserver variation in measurements of the anovaginal distance with perineal ultrasound [ Time Frame: immediate ]

3 measurements per investigator and patient, comparing variation, using kappa value


Original Primary Outcome: Same as current

Current Secondary Outcome: Ease of learning the technique of perineal ultrasound to measure the anovaginal distance [ Time Frame: immediate ]

how many measurements did the investigator learning the procedure need to perform produce a measurement that was within 5 mm of the measurements of the teacher


Original Secondary Outcome: Same as current

Information By: Ostergotland County Council, Sweden

Dates:
Date Received: October 18, 2016
Date Started: May 2013
Date Completion:
Last Updated: October 21, 2016
Last Verified: October 2016