1. Factors associated with treatment outcomes after intravesical hyaluronic acid therapy in women with refractory interstitial cystitis: A prospective, multicenter study
- Author
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Jenn Ming Yang, Ching Pei Tsai, So Jung Liang, Wen Chu Huang, Man Jung Hung, Fei Chi Chuang, Chun Shuo Hsu, Tzu Yin Lin, and Yi Hao Lin
- Subjects
Adult ,medicine.medical_specialty ,Side effect ,Visual analogue scale ,Treatment outcome ,Cystitis, Interstitial ,Urology ,030204 cardiovascular system & hematology ,Young Adult ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,McNemar's test ,Refractory ,Hyaluronic acid ,medicine ,Humans ,Prospective Studies ,Hyaluronic Acid ,Aged ,business.industry ,Interstitial cystitis ,General Medicine ,Middle Aged ,medicine.disease ,Treatment Outcome ,Multicenter study ,chemistry ,030220 oncology & carcinogenesis ,Female ,business - Abstract
BACKGROUND Bladder instillation of hyaluronic acid (HA) is an acceptable treatment for bladder pain syndrome/interstitial cystitis (BPS/IC). The treatment is limited by a high proportion of non-responders (~30%-40%). Here, we aimed to evaluate predisposing factors associated with treatment outcomes. METHODS This is a prospective multicenter study. We enrolled a total of 137 (out of 140) women with refractory IC. They all underwent a standard protocol of 6-month intravesical HA therapy (initial 4 weeks, once weekly, followed by once monthly). To assess the outcomes, we used the pain Visual Analog Scale (Pain-VAS), Interstitial Cystitis Symptom and Problem Index (ICSI & ICPI), and a scaled Global Response Assessment (GRA). RESULTS The age of patients was 47.6 ± 27.5 (range 24-77) years. We found statistically significant improvement (p < 0.001) in the Pain-VAS and the ICSI & ICPI scores both after the initial 4-weekly instillations and at the end of 6-month treatment. Those who reported moderate/marked improvement on GRA at the 2 follow-up visits were considered responders: 39.4% (n = 54) at the first follow-up, and 59.9% (n = 82) at the second follow-up. No remarkable side effect was noted. After statistical analyses, treatment outcomes on GRA were positively associated with baseline functional bladder capacity and with Pain-VAS scores. The initial treatment responses optimally (p < 0.001) predicted final treatment outcomes (McNemar). CONCLUSION Intravesical HA therapy is safe and effective for most (~60%) of our patients with refractory IC. Functional bladder capacity and Pain-VAS scores before treatment, and the early treatment responses are helpful predictors of treatment outcomes.
- Published
- 2021
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