Inside a hand-held device, radiofrequency energy is applied to a few drops of water to create vapor (steam). The water vapor is injected into the prostate tissue that is blocking the flow of urine from the bladder, where it immediately turns back to water, releasing the energy stored in the vapor into the cell membranes. At this point, the cells are gently and immediately damaged, causing cell death. Over time, your body will absorb the treated tissue through its natural healing response.
Unlike other energies that have been used to treat BPH, the steam heat travel evenly between the cell planes using convection flow. These leads to a very controlled and effect treatment of prostate tissue.
The precise nature of Rezum minimizes damage to the bladder neck and ejaculatory ducts which preserves ejaculation.