Powered by Convective Radiofrequency (RF) Water Vapor Thermal Therapy technology, Rezūm applies RF thermal energy to safely and effectively treat lower urinary tract symptoms secondary to BPH using transurethral needle ablation (TUNA). Each 9 second treatment uses 0.42ml of radiofrequency heated sterile water vapor which rapidly and uniformly disperses through the tissue interstices. The condensation of water vapor releases stored thermal energy. Cell membranes are gently denatured, thereby causing immediate cell death, the vasculature is closed, and there is denervation of the alpha adrenergic nerves within the treatment zone providing you with an efficient, uniform, predictable treatment. Over time, this ablated tissue is reabsorbed by the body’s natural healing response, reducing the volume of tissue allowing the urethra to open relieving LUTs symptoms.