(220) LESSONS LEARNED FROM REZUM IN PATIENTS WITH SIGNIFICANT MEDIAN LOBE

Abstract Introduction Convective water vapor thermal therapy (Rezum) can have varied outcomes based on prostate architecture. Objective We sought to compare the efficacy of traditional Rezum therapy with steam treatment of the median lobe to transurethral resection for the median lobe, and Rezum treatment for the lateral lobes of the prostate (Rezurp). Methods A single-surgeon series between 2019 and 2024 analyzed standard BPH outcomes. The rate of retreatment, complications, and a global assessment: “Knowing what you know now, would you like to repeat the procedure?” were utilized. Significant median lobe was defined as ≥1 cm of intravesical protrusion for Rezurp patients and ≥ 2 median lobe treatments required for standard Rezum. Results Follow-up assessments were performed for 89/105 patients in the Rezurp group and 107/138 patients in the Rezum group. There was no significant difference in baseline characteristics between the two groups, as shown in Table 1. In the Rezum group, the median IPSS before surgery was 25 (20–28), while the median score after surgery was 9 (5–15), and in the Rezurp group, the median IPSS before surgery was 22.5 (19–28), and the median score after surgery was 5 (3–9.7). The changes were statistically significant for both groups (P < 0.001). For the IPSS quality-of-life (QoL) scores, the median in both groups was 4 (mostly not satisfied) before surgery and 2 (mostly satisfied) after surgery. The changes in QoL scores were significant in both (P < 0.001). In the Rezum group, the median Q-max was 7.9 and 13.1 before and after surgery, while in the Rezurp group, it was 8.0 and 17.1, respectively, and the changes were significant for both (P = 0.001). In addition, changes in post-voiding residue were significant in both groups (P = 0.001) (Table 2). In the Rezum group, 62% (67 patients) were on alpha-blockers before surgery, whereas only 15.8% (17 patients) continued after surgery. For the Rezurp group, 71.9% (64 patients) were on alpha-blockers before surgery, compared to 10.1% (9 patients) afterward. The discontinuation of alpha-blockers was significant for both groups (P = 0.001). Furthermore, changes in stopping the use of 5-alpha reductase inhibitors were significant for both groups (P = 0.001). The changes in stopping PDI-5 were not significant in both groups (P = 0.38). Regarding retreatment, 5.6% (5 out of 89) of patients in the Rezurp group required a retreatment procedure, compared to 14.9% (16 out of 107) in the Rezum group. The retreatment rate was significantly higher in the Rezum group (P = 0.03). When asked if they would repeat the procedure, 91% (81 out of 89) in the Rezurp group expressed interest, compared to 72% (77 out of 107) in the Rezum group. The interest in repeating the procedure was significantly higher in the Rezurp group (P = 0.001). Conclusions Although both Rezum therapy and Rezurp resulted in significant improvements in Q-max, PVR, IPSS, and QoL, the Rezurp group had a significantly lower rate of retreatment. Disclosure No.