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  • Title: Effects of intravesical hydrostatic pressure and volume on the distensibility of the canine prostatic portion of the urethra.
    Author: Johnston GR, Feeney DA, Osborne CA, Johnston SD, Smith FO, Jessen CR.
    Journal: Am J Vet Res; 1985 Mar; 46(3):748-51. PubMed ID: 3994141.
    Abstract:
    Positive-contrast retrograde urethrocystograms were obtained serially on 12 male dogs weighing 11.4 to 23.2 kg before, during, and after the injection of contrast medium until the urinary bladder neck and prostatic and membranous portions of the urethra remained open and distended as viewed by fluoroscopy. Correlations of intravesical volumes and pressures required to achieve maximum distension of the midprostatic portion of the urethra with body weight and surface area were not significant. Because of the variability in intravesical volumes and pressures encountered at maximum distension of the prostatic portion of the urethra, a dose of contrast material expressed relative to body weight or surface area could not be determined for consistently providing maximum distension of the prostatic portion of the urethra.
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