Abstract
Introduction and hypothesis
The standardized evaluation of posterior compartment prolapse using the Pelvic Organ Prolapse Quantification (POP-Q) system is limited. The primary objective of this study is to develop and validate the interexaminer reliability of a new system for assessing the posterior vaginal wall for the presence of a rectocele.
Methods
This was a cross-sectional study of women presenting to an academic urogynecology clinic. Subjects underwent a routine pelvic examination that included a standard POP-Q followed by two Standardized Digital Rectal Exams (SDRE) by two different providers, each blinded to the other’s results. The SDRE measures the distance from the leading edge of a posterior bulge to the hymen with a finger in the distal rectum - first visually and then an actual measured distance using a marked cotton swab (Q-tip measurement). Correlations between examiners for the SDRE and the POP-Q were analyzed using Pearson's correlation coefficient (ρ).
Results
Eight attending and fellow urogynecologists examined 50 subjects. Mean age was 57.3 years, mean BMI 30.9 kg/m2, with an overall median POP-Q stage 2 (range 0–3), and median posterior POP-Q stage 1 (range 0–3). Overall, 54 % of women had a noteworthy rectocele by typical digital rectal exam. Interexaminer correlations with SDRE for both the visual assessment (ρ = 0.697, p < 0.0001) and the Q-tip measurement (ρ = 0.767, p = p < 0.001) were strong. The intraexaminer visual assessment and the Q-tip measurement were highly correlated (ρ = 0.934, p = <0.001).
Conclusion
This standardized rectal examination provides a consistent method for the reporting of distal rectoceles that can lend additional information to the POP-Q exam.
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Acknowledgements
We would like to thank Mr. Yilan Xu and Dr. J.S. Marron of the Department of Statistics and Operations Research at the University of North Carolina at Chapel Hill for their statistical support.
Conflicts of interest
Matthews CA and Geller EJ: Robotics fellowship grant from Intuitive Surgical.
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Crane, A.K., Geller, E.J., Myers, E.M. et al. Implementation of a standardized digital rectal exam to improve the accuracy of rectocele diagnosis. Int Urogynecol J 26, 107–111 (2015). https://doi.org/10.1007/s00192-014-2479-6
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DOI: https://doi.org/10.1007/s00192-014-2479-6