This is performed for bladder stones. Under general anesthesia, a lighted scope is passed into the bladder through the urethra. Then, using laser or some other means, the stone is pulverized until the particles are small enough to be washed out of the bladder. You may be sent home with a catheter draining the bladder to a bag for a few days. After effects may include blood in the urine, increased urgency and frequency of urination, burning with urination.