Effect of anatomic urethral length on the correlation between the Q-tip test and descent at point Aa of the POP-Q system |
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Authors: | J Robert Larrieux Sunil Balgobin |
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Institution: | (1) Department of Obstetrics and Gynecology, Boston University, Room 6623, 85 East Concord Street, Boston, MA 02118, USA;(2) Department of Obstetrics and Gynecology, UT Southwestern, 5323 Harry Hine Blvd, Dallas, TX 75390-9032, USA |
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Abstract: | The objective of this study is to evaluate the effect of anatomic urethral length on the relationship between descent at point
Aa of the pelvic organ prolapse quantification (POP-Q) system and the Q-tip straining angle. The records of 323 patients who
were evaluated for urinary incontinence were reviewed. Prolapse staging was performed using the POP-Q system. Urethrovesical
junction hypermobility defined as a maximal straining angle ≥30° was assessed with the Q-tip test. Urethral length was measured
with a urethral profilometer. A substantial correlation was found between descent at point Aa and the straining Q-tip angle
(r = 0.65, p < 0.0001). There was no correlation between the anatomic urethral length and straining Q-tip angle (r = −0.01, p = 0.8). Urethral length does not affect the straining Q-tip angle. Point Aa is a strong predictor of an abnormal straining
Q-tip angle in women with stage I anterior vaginal wall prolapse or greater. |
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Keywords: | POP-Q point Aa Urethral length Q-tip test |
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