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Randomized Controlled Trial
. 2023 Mar;42(3):615-622.
doi: 10.1002/nau.25142. Epub 2023 Feb 6.

A prospective, randomized trial comparing intravesical dimethyl sulfoxide (DMSO) to bupivacaine, triamcinolone, and heparin (BTH), for newly diagnosed interstitial cystitis/painful bladder syndrome (IC/PBS)

Nani P Moss  1 , Henry H Chill  1 , Peter K Sand  1 , Cecilia Chang  2 , Roger P Goldberg  1 , Adam Gafni-Kane  1
Affiliations
Randomized Controlled Trial

A prospective, randomized trial comparing intravesical dimethyl sulfoxide (DMSO) to bupivacaine, triamcinolone, and heparin (BTH), for newly diagnosed interstitial cystitis/painful bladder syndrome (IC/PBS)

Nani P Moss et al. Neurourol Urodyn. 2023 Mar.

Abstract

Introduction and hypothesis: The primary aim of this study was to compare the effect of bladder instillations using dimethyl sulfoxide (DMSO) with triamcinolone versus bupivacaine, triamcinolone, and heparin (BTH) in women with newly diagnosed interstitial cystitis/painful bladder syndrome. The primary outcome was improvement in symptoms measured using the O'Leary-Sant Interstitial Cystitis Symptoms Index (ICSI) score. Secondary comparisons included changes in urinary frequency, nocturia, and bladder capacity.

Materials and methods: This was a prospective, randomized study. Patients with a recent diagnosis of interstitial cystitis/painful bladder syndrome (IC/PBS) were randomized 1:1 to treatment with either 6 weekly bladder instillations of DMSO with triamcinolone or BTH. During follow-up visits, patients completed the ICSI questionnaire, and bladder capacity was determined through the retrograde filling of the bladder. The χ2 test or Student's t test were used for data analysis.

Results: A total of 83 patients were randomized, and final analysis included 70 participants who completed the 6 weekly instillations (42 DMSO, 28 BTH). The groups were similar in baseline demographics and clinical characteristics, except for cystometric maximum capacity (DMSO 338.62± 139.44 mL, BTH 447.43 ± 180.38 mL, p = 0.01). In the DMSO group, 63% of patients had a greater than 29.5% reduction in total ICSI score versus 43% in the BTH group (p = 0.15). Nocturia and pain were significantly reduced in the DMSO group. There was a significant increase from baseline in bladder capacity for both groups.

Conclusion: In women with newly diagnosed IC/PBS, bladder instillations with DMSO and triamcinolone provide greater improvement in pain and nocturia compared to BTH.

Keywords: bladder instillations; dimethyl sulfoxide (DMSO); interstitial cystitis; intravesical instillation; painful bladder syndrome.

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References

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