LUTS/BPH(구연) Oral Session4 / LUTS (Ⅰ) (O-036) Rm.203 10월 30일(수) 14:00-15:00 전립선비대증 환자에서 방광유순도가 수술 후 기능적 변화에 미치는 영향 서울특별시립 보라매병원, 서울대학교병원, 메디플렉스 세종병원 유상준¹, 서준교¹, 박주현¹, 조성용², 정현¹, 손환철¹, 오승준², 백재승³, 조민철¹ Introduction: Storage symptoms did not improve as much after laser prostatectomy than conventional transurethral resection of prostate and reliable predictors for postoperative storage symptom improvements are awaited. We assessed the effects of preoperative bladder compliance on the long-term functional outcomes, especially focused on postoperative storage symptom changes, after laser prostatectomy. Materials and methods: From January 2008 to March 2014, 1608 men who underwent laser prostatectomy, including holmium laser enucleation or photo-vaporization of the prostate, were included in the analysis. We divided patients into 3 groups according to bladder compliance on a baseline urodynamic study: severely decreased, < 12.5; mildly decreased, 12.5–40.0; normal, ≥40 mL/cmH2O. A multivariable analysis was performed to determine the impact of bladder compliance on long-term functional outcomes after laser prostatectomy. Results: Severely and mildly decreased bladder compliance was observed in 50 (3.1%) and 232 (14.4%) patients, respectively. As bladder compliance decreased, the baseline International Prostate Symptom (I-PSS) total score and storage sub-score were increased; the voiding sub-score remain unchanged. At postoperative 36 months, improvements in the I-PSS total score and storage sub-score were significantly higher in the severely decreased compliance group compared to other groups, although those were equivalent at postoperative 1 and 12 months. On the multivariable analysis, decreased bladder compliance was significantly associated with superior improvement in storage sub-score at postoperative 36 months, although it was not associated with improvements in I-PSS total score and voiding sub-score. Conclusions: As preoperative bladder compliance decreased, storage symptoms were further improved at 36 months after laser prostatectomy. In addition, bladder compliance < 12.5 mL/cmH2O seemed to be a reliable cut-off value for predicting superior improvement in long-term storage symptoms after laser prostatectomy. keywords : Compliance, Laser; Prostatic hyperplasia, Prostatectomy, Urinary bladder