The PAE procedure blocks the blood flow to the areas of the prostate that are most affected by BPH, resulting in death, or necrosis, of isolated areas. Because it is impossible to block all of the blood flow to the prostate, it does not die completely.uring the PAE procedure. General anesthesia is not used for the PAE procedure, so the patient will not be “put to sleep”. The patient will receive IV medications that take away pain and anxiety with the goal of making them comfortable for the entire procedure. The procedure itself is not painful.