To compare bony pelvis dimensions between white women with and without genital prolapse using computed tomography (CT) pelvimetry.
Thirty-four multiparous white women with vaginal prolapse beyond the hymen and 34 matched white controls with no signs or symptoms of pelvic support defects underwent CT pelvimetry.
The anteroposterior and transverse diameters of the pelvic inlet, the interspinous diameter of the midpelvis, and the intertuberous diameter of the pelvic outlet were measured.
Post hoc power analysis showed that 22 women were needed in each group to detect a 10% difference in the pelvic dimensions between groups, with an alpha error of 1% and a bêta error of 10%, resulting in a 90% power.
Mean (± standard deviation [SD]) age of the subjects was 63.4 ± 8.3 years, compared with 62.9 ± 7.8 years for controls.
Mean parity of the subjects was 3.3 ± 1.7, compared with 3.6 ± 1.7 for controls.
Mean (± SD) anteroposterior (12.5 ± 1.3 versus 12.8 ± 1.0 cm), interspinous (11.5 ± 0.8 versus 11.2 ± 0.9 cm), and intertuberous (10.0 ± 1.0 versus 9.8 ± 0.8 cm) diameters were not significantly different between study groups.
Mean transverse diameter of the pelvic inlet was significantly greater in women with prolapse than those without prolapse (12.9 ± 0.7 versus 12.4 ± 0.6 cm, P=006).
Women with advanced vaginal prolapse have larger transverse inlet diameters than do women with normal pelvic support.
Mots-clés Pascal : Prolapsus, Vagin, Tomodensitométrie, Os bassin, Cavité pelvienne, Pelvimétrie, Epidémiologie, Diagnostic, Facteur risque, Homme, Femelle, Etude comparative, Appareil génital femelle pathologie, Vagin pathologie, Radiodiagnostic, Imagerie médicale
Mots-clés Pascal anglais : Prolapsus, Vagina, Computerized axial tomography, Pelvis bone, Pelvic cavity, Pelvimetry, Epidemiology, Diagnosis, Risk factor, Human, Female, Comparative study, Female genital diseases, Vaginal diseases, Radiodiagnosis, Medical imagery
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 99-0129973
Code Inist : 002B20C01. Création : 16/11/1999.