Correlation between urodynamic function and 3D cat scan anatomy in neobladders: does it exist?
BACKGROUND
We compared the functional and anatomical differences among three different orthotopic neobladders, utilizing video urodynamics and 3D CT to determine what parameters, if any, correlate to function.


METHODS
Thirty-four patients were able to participate in the evaluation of their neobladder by 3D CT and video urodynamics. Three different orthotopic neobladders were identified (12 ileal, 7 ileocecal, 15 sigmoid). Multiple measurements, observations and functional data have been obtained. Statistical analysis for this study employed a linear regression test and an odds ratio calculation (using StatSoft V. 5.1).


RESULTS
In comparing three different neobladders, no significant differences were noted. Looking at the entire population, the following association was statistically significant in linear correlation: the maximal capacity and the neobladder volume; the pressure at the maximal capacity and the distance from the symphysis, the pressure at maximal flow and both the distance from the symphysis and the thickness of the neobladder. The distance from the left femoral head was directly correlated with the post void residual and inversely correlated with the maximal flow. The Odds ratio calculation revealed (with significant P < 0.05) that the further the center of the neobladder is from the right femoral head, the higher risk of incontinence.


CONCLUSIONS
The study seems to show no significant anatomical or functional difference among the three different types of neobladders. A possible correlation between the position of the neobladder and urinary incontinence is suggested, recognizing further study in a larger population is required.
Crivellaro
S
S
Azienda ospedaliero-universitaria di Udine, DIASU Urologia, Udine, Italy. scrivell@wfubmc.edu
Mami
E
E
Wald
C
C
Smith
J J
JJ
Kocjancic
E
E
Stoffel
J
J
Bresette
J
J
Libertino
J A
JA
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002432:Cecum / Q000601:surgery; D012809:Colon, Sigmoid / Q000601:surgery; D015653:Cystectomy; D005260:Female; D006801:Humans; D007082:Ileum / Q000601:surgery; D007091:Image Processing, Computer-Assisted; D008297:Male; D008875:Middle Aged; D016017:Odds Ratio; D011183:Postoperative Complications / Q000503:physiopathology; D019651:Plastic Surgery Procedures; D012044:Regression Analysis; D014057:Tomography, X-Ray Computed; D001743:Urinary Bladder / Q000033:anatomy & histology / Q000000981:diagnostic imaging* / Q000503:physiopathology*; D014549:Urinary Incontinence / Q000209:etiology; D016476:Urinary Reservoirs, Continent / Q000502:physiology*; D014563:Urodynamics / Q000502:physiology*; D013520:Urologic Surgical Procedures; D013521:Urologic Surgical Procedures, Male