How safe is the green light laser prostatecctomy for BPH? I am scheduled to have one done next week as an outpatient procedure in a hospital under spinal anesthesia and was curious about any major risk. As far as I know, my vitals are okay. I have severe bladder outlet obstruction, incontinence and some dilatation of ureters and renal pelvis (creatine and BUN are normal). Liver, cardiovascular, etc. are okay.