Journal
SCANDINAVIAN JOURNAL OF UROLOGY AND NEPHROLOGY
Volume 39, Issue 2, Pages 143-147Publisher
INFORMA HEALTHCARE
DOI: 10.1080/00365590410015876-1
Keywords
hyaluronic acid; interstitial cystitis; painful bladder syndrome
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Objective. To determine whether intravesical hyaluronic acid is effective in reducing the urinary frequency and pain associated with interstitial cystitis/painful bladder syndrome (IC/PBS). Material and methods. In a prospective, unblinded, uncontrolled pilot study, 20 patients (age range 34-80 years), all suffering from IC/PBS, received weekly bladder instillations of hyaluronic acid for 1 month and monthly instillations for a further 2 months. Patients were then offered further monthly instillations and all were subsequently evaluated after 3 years. Patient outcomes assessed were urinary frequency, use of analgesics and pain. Results. All patients completed the 3 months of hyaluronic acid treatment with mean decreases in nocturia and pain of 40% and 30%, respectively, and a decrease in analgesic use. Thirteen patients (65%) responded to treatment (responders) and continued therapy, while seven patients withdrew, six because of a lack of response and one due to cystectomy. In the 13 patients who continued hyaluronic acid instillations, four complete responders (30%) ceased therapy after a strong positive response (36%, 60% and 81% decreases compared to baseline in day-time voids, night-time voids and pain scores, respectively) which was maintained in the absence of continuous therapy, while after 3 years seven partial responders (35%) were still on therapy (25% and 43% decreases compared to baseline in day-time voids and pain scores, respectively). Two patients developed other diseases during follow-up and showed no response to long-term therapy. Hyaluronic acid was well tolerated by all patients. Conclusion. Hyaluronic acid safely reduced the pain and, to a lesser degree, the urinary frequency associated with IC.
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