The following table summarizes the change in the current budget, depending on various estimates of the total percentage of the 5,000 TURP procedures that might be replaced by other energy- based interventions for the treatment of BPH in the future. [...] The frequency is measured by the number of cycles per second and the unit of measurement is the Hertz (Hz). [...] The quality of life question, plus the initial 7 questions from the AUA questionnaire, comprise the IPSS (8;15) The IPSS questionnaire has been translated into many languages (20) and has been used worldwide as a benchmark to measure the incidence and prevalence of BPH in many countries, and to determine the response to surgical and medical therapy. [...] Some authors believe it is vital, while others (23) consider the test optional, and point to the invasive nature of the test, the cost, and the questionable ability of the test to predict outcomes. [...] This method does not lead to the removal of the hypertrophied tissue; rather, a cut is made in the bladder neck or along the length of the prostate to relieve the pressure on the urethra.