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J Urol. 1999 Aug;162(2):330-4.

Comparison of bladder blood flow in patients with and without interstitial cystitis.

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Department of Urology, Temple University School of Medicine, Philadelphia, Pennsylvania, USA.



We compared bladder blood flow during filling and emptying in patients with and without interstitial cystitis, and correlated blood flow with symptoms in those with interstitial cystitis.


Bladder perfusion was measured using a dual channel endoscopic laser Doppler flow probe. Measurements were obtained in superficial and deeper vascular beds from the bladder mucosa at the trigone and back wall at baseline, at the volume of awake capacity, during 80 cm. water hydrodistention and after bladder drainage. American Urological Association symptom score was obtained preoperatively in interstitial cystitis patients.


In all areas bladder perfusion decreased with filling in interstitial cystitis patients and increased in those without interstitial cystitis. There were no significant differences in response to emptying the bladder, as perfusion tended to increase in both groups. There was no correlation between bladder perfusion at baseline, or in response to filling or emptying with overall symptom score.


Bladder perfusion decreases with bladder filling in patients with but increases in those without interstitial cystitis. The inability of the interstitial cystitis bladder to increase bladder blood flow with filling may be a reflection of other pathological processes in the bladder mucosa. The lack of correlation between blood flow and symptoms suggests that bladder ischemia alone cannot account for the symptoms in interstitial cystitis.

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