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  • Title: [EARLY EXPERIENCE OF INTRAVESICAL INSTILLATION OF DIMETHYL SULFOXIDE 50% SOLUTION FOR HUNNER TYPE INTERSTITIAL CYSTITIS IN A CLINIC].
    Author: Nanri M, Matsuo M.
    Journal: Nihon Hinyokika Gakkai Zasshi; 2022; 113(4):122-127. PubMed ID: 37866931.
    Abstract:
    (Objectives) To analyze the early observations in intravesical instillation of dimethyl sulfoxide (DMSO) 50% solution for Hunner-type interstitial cystitis (HIC) in our clinic and discuss possible factors affecting outcomes and future tasks. (Materials and methods) Seven patients who received DMSO therapy upon HIC relapse after transurethral resection of Hunner lesions with hydrodistension were enrolled for this study. For DMSO, 50 mL of 50% intravesical solution was administered six times every two weeks. Treatment evaluation was conducted using O'Leary & Sant Interstitial Cystitis Symptom and Problem Indexes (ICSI and ICPI), numerical rating scale (NRS) for bladder pain (0-10 points), and the post-treatment variations for which the pre-treatment values of the 24-hour urinary frequency, the average voided volume, and the maximum voided volume were used. The patient satisfaction survey was conducted with a questionnaire, and cystoscopy was conducted for all cases before and after treatment. (Results) All the patients were females with an average age of 58.3 years old. According to the Society of Interstitial cystitis of Japan Severity Criteria, 5 of the 7 cases showed a moderate level. No severe side effects were observed, and all the patients achieved six times administration. Changes in the points from the pre-treatment baseline values to the post-treatment values were -6.1, -9.1, and -10.0 for Pain NRS, ICSI, and ICPI, respectively. In addition, the 24-hour urinary frequency decreased by 5.34 times, while the average voided volume and the maximum voided volume increased to 60.3 mL and 75.7 mL, respectively. Subjective symptoms of all the patients improved, and cystoscopy revealed the disappearance or remission of Hunner lesions. (Conclusions) If Hunner lesions can be diagnosed, DMSO therapy could be used effectively and safely for HIC. The therapy is also promising for use as a future initial therapy. Therefore, the accurate diagnosis of Hunner lesions will be more important in the future.
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