Extracorporeal shock wave lithotripsy is a nonsurgical treatment for kidney stones. It uses high-energy shock waves to break the stones into tiny pieces. The pieces can then be passed with urine.
Lithotripsy is used to remove kidney stones that:
Most people who have lithotripsy for kidney stones are free of stones within three months of treatment. Patients with stones in the kidney and upper ureter have the most success with treatment. There may be fragments that are too large to pass after the procedure. They can be treated with lithotripsy again.
Problems from the procedure are rare, but all procedures have some risk. Your doctor will review potential problems, like:
Some factors that may increase the risk of complications include:
Your doctor may do the following:
Talk to your doctor about your medications. You may be asked to stop taking some medications up to one week before the procedure, like:
Heavy sedation or general anesthesia is usually used. Heavy sedation will keep you calm. With general anesthesia, you will be asleep. It will help you remain still and avoid discomfort.
Shock waves can be passed to the stones in two ways:
Your doctor will use x-rays or ultrasound to locate the stone. Your body will be positioned to target the stone. Shock waves will be passed through the stones until they are crushed. They will be crushed into pieces as small as grains of sand.
Anesthesia prevents pain during the procedure. There may be some pain and discomfort afterward from the passage of broken stones. There may also be some bruising on the area treated. Pain and discomfort after the procedure can be managed with medication.
You will be able to move almost immediately after the procedure. Be sure to follow your doctor's instructions, which may include:
After arriving home, contact your doctor if any of the following occurs:
If you think you have an emergency, call for medical help right away.
National Kidney Foundation
National Kidney and Urologic Diseases Information Clearinghouse
Canadian Urological Association
The Kidney Foundation of Canada: Northern Alberta and the Territories Branch
Kidney stones in adults. National Kidney and Urologic Diseases Information Clearinghouse website. Available at: http://kidney.nidd.... Updated January 28, 2013. Accessed May 21, 2013.
Lithotripsy. National Kidney Foundation website. Available at: http://www.kidney.org/atoz/content/lithotripsy.cfm. Accessed May 21, 2013.
Kidney and ureteral stones: Surgical management . American Urological Association website. Available at: http://www.urologyhealth.org/urology/index.cfm?article=32. Updated January 2011. Accessed May 21, 2013.
Nephrolithiasis. EBSCO DynaMed website. Available at: http://www.ebscohost.com/dynamed/what. Updated May 17, 2013. Accessed May 21, 2013.
Last reviewed May 2013 by Michael Woods, MD; Brian Randall, MD
Last Updated: 5/21/2013