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KMID : 1011820170580050353
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Investigative and Clinical Urology
2017 Volume.58 No. 5 p.353 ~ p.358
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Evaluation of the incidence and risk factors associated with persistent frequency in interstitial cystitis/bladder pain syndrome and the efficacy of antimuscarinic treatment
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Kim A-Ram
Hoe Kyeong-Ok
Shin Jung-Hyun
Choo Myung-Soo
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Abstract
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Purpose: To investigate the incidence and risk factors associated with persistent urinary frequency, and to evaluate the efficacy of antimuscarinic treatment.
Materials and Methods: Interstitial cystitis/bladder pain syndrome (IC/BPS) patients complaining of persistent urinary frequency despite improved pain were evaluated. Before initial conventional treatment, each patient completed a voiding diary and symptom questionnaires. After conventional treatment, patients were divided according to the presence of pain and frequency. Improved pain was defined as lesser than 3 points in visual analogue scale, and persistent urinary frequency as >10 times/d. Risk factors for persistent frequency were identified through multivariate analysis. The efficacy of antimuscarinic treatment was assessed by the mean change of frequency.
Results: Of 171 IC/BPS patients treated with conventional therapy, 132 had improved pain after 3 months, but 72 had persistent frequency (72 of 132, 54.5%). Patients with persistent frequency had lower voided volume (p=0.008), lower maximal flow rate (p<0.001), lower maximal bladder capacity (p=0.003), and more frequent micturition (p<0.001) at baseline compared to those with improved frequency. Patients who took antimuscarinic agents showed slightly decreased urinary frequency, from 14.6 times/d to 13.5 times/d (p=0.438) after 3 months of medication. No patients showed more than a 20% decrease in frequency with antimuscarinics.
Conclusions: About half of the patients with IC/BPS showed persistent frequency, with poor voiding function identified as a risk factor; antimuscarinic treatment was not effective in these patients.
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KEYWORD
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Antimuscarinics, Epidemiology, Interstitial cystitis, Pain, Urine
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