Relationship between the frequency of electrocautery of Hunner lesions and changes in bladder capacity in patients with Hunner type interstitial cystitis.

Electrocautery is a promising treatment option for patients with Hunner type interstitial cystitis (HIC), but frequently requires multiple sessions due to recurrence of the lesions. In the present study, we assessed the relationship between the frequency of electrocautery of Hunner lesions and changes in maximum bladder capacity (MBC) at hydrodistension in a large cohort of 118 HIC patients.

Three mixed-effect linear regression analyses were conducted for MBC against (1) the number of sessions; (2) the number of sessions and the time between each session and the first session; and (3) other relevant clinical parameters in addition to the Model (2). The mean number of sessions was 2.8 times. MBC decreased approximately 50 mL for each additional electrocautery session, but this loss was offset by 10 mL for each year the subsequent session was postponed. MBC of < 400 mL at the first session was a significant risk factor for MBC loss with further sessions. No other clinical parameters were associated with MBC over time. This study demonstrates a significant relationship between the frequency of electrocautery of Hunner lesions and MBC changes in HIC patients. Low MBC at the first session is a poor prognostic marker for MBC loss over multiple sessions.

Scientific reports. 2021 Jan 08*** epublish ***

Yoshiyuki Akiyama, Masayoshi Zaitsu, Daiji Watanabe, Itsuki Yoshimura, Aya Niimi, Akira Nomiya, Yuta Yamada, Yusuke Sato, Masaki Nakamura, Taketo Kawai, Daisuke Yamada, Motofumi Suzuki, Haruki Kume, Yukio Homma

Department of Urology, Graduate School of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo, Tokyo, Japan. ., Department of Public Health, Dokkyo Medical University School of Medicine, Tochigi, Japan., Department of Urology, Graduate School of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo, Tokyo, Japan., Depratment of Urology, Teikyo University School of Medicine, Tokyo, Japan., Department of Urology, New Tokyo Hospital, MatsudoTokyo, Chiba, Japan., Department of Urology, National Center for Global Health and Medicine, Tokyo, Japan., Japanese Red Cross Medical Center, Tokyo, Japan.

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