Rezūm therapy for ≥80‐mL benign prostatic enlargement: a large, multicentre cohort study

To evaluate the efficacy and safety of Rezūm therapy in benign prostatic hyperplasia (BPH) patients with prostates ≥80 mL.A prospective registry was established at two high-volume Canadian centres. Patients had baseline medical history documented, and uroflowmetry and questionnaire results were recorded over 12 months.Eighty-three patients (median [interquartile range {IQR}] age 69.2 [63.2, 74.8] years) with a prostate size ≥80 mL were included. The median (IQR) prostate volume was 100.0 (88.5, 115.0) mL and 65% had a median lobe. Twenty-one patients had prior urinary retention. The median (IQR) number of injections was 13 (11, 15) and catheterization duration was 9 (7, 14) days. International Prostate Symptom Scores (IPSSs) improved by 24%, 57% and 59% at 1, 3 and 12 months, respectively (P < 0.001). IPSS Quality of Life (QoL) scores improved by 27%, 56% and 70% at these same timepoints (P < 0.001). Maximum urinary flow rate improved by 55% at 3 months (P = 0.002) and 59% at 12 months, and post-void residual urine volume improved by 58% at 3 months (P = 0.006). BPH Impact Index scores improved by 57% at 3 months and 71% at 12 months. International Index of Erectile Function-15 scores improved by 15% at 6 months, and Male Sexual Health Questionnaire for Ejaculatory Dysfunction scores improved by 22.4% at 1 month. Three patients (3.6%) noted reduced/anejaculation. No events of Clavien-Dindo grade III or higher occurred.This study demonstrates, for the first time, the safety and efficacy of Rezūm therapy in large glands >80 mL. IPSS improved by 59% and IPSS QoL score improved by 70% at 12 months. Objective maximum urinary flow measures improved at 12 months by 59%, while erectile and ejaculatory function remained preserved.