Shock Wave Lithotripsy: Before Your Procedure
What is lithotripsy?
Shock wave lithotripsy is a way to treat kidney stones without surgery. It is also called extracorporeal shock wave lithotripsy, or ESWL. This treatment uses sound waves to break kidney stones into tiny pieces. These pieces can then pass out of the body in the urine.
You may get medicine to make you relaxed and help with pain or discomfort.
You will lie on a table. The lithotripsy machine directs sound waves at your stone through a cushion.
The doctor may use a small, flexible tube called a stent. The stent will let the stone pass more easily.
Most people are at the doctor's office or clinic for about 2 hours. You can go back to your normal routine right away.
Most stones pass within 24 hours after the procedure. But it can take as long as several weeks. If you have a large stone, you may need to come back for several treatments. In some cases lithotripsy does not break up the stones. Surgery may be needed to remove them.
Follow-up care is a key part of your treatment and safety. Be sure to make and go to all appointments, and call your doctor if you are having problems. It's also a good idea to know your test results and keep a list of the medicines you take.
How do you prepare for the procedure?
Procedures can be stressful. This information will help you understand what you can expect. And it will help you safely prepare for your procedure.
Preparing for the procedure
- Be sure you have someone to take you home. Anesthesia and pain medicine will make it unsafe for you to drive or get home on your own.
- Understand exactly what procedure is planned, along with the risks, benefits, and other options.
- If you take aspirin or some other blood thinner, ask your doctor if you should stop taking it before your procedure. Make sure that you understand exactly what your doctor wants you to do. These medicines increase the risk of bleeding.
- Tell your doctor ALL the medicines and natural health products you take. Some may increase the risk of problems during your procedure. Your doctor will tell you if you should stop taking any of them before the procedure and how soon to do it.
- Make sure your doctor and the hospital have a copy of your advance care plan. If you don't have one, you may want to prepare one. It lets others know your health care wishes. It's a good thing to have before any type of surgery or procedure.
What happens on the day of the procedure?
Follow the instructions exactly about when to stop eating and drinking. If you don't, your procedure may be cancelled. If your doctor told you to take your medicines on the day of the procedure, take them with only a sip of water.
Take a bath or shower before you come in for your procedure. Do not apply lotions, perfumes, deodorants, or nail polish.
Take off all jewellery and piercings. And take out contact lenses, if you wear them.
At the hospital or surgery centre
Bring a picture ID.
You will be kept comfortable and safe by your anesthesia provider. You may get medicine that relaxes you or puts you in a light sleep. The area being worked on will be numb.
The procedure will take about 1 hour.
When should you call your doctor?
- You have questions or concerns.
- You don't understand how to prepare for your procedure.
- You become ill before the procedure (such as fever, flu, or a cold).
- You need to reschedule or have changed your mind about having the procedure.
Where can you learn more?
Go to https://www.healthwise.net/patientEd
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Current as of: May 4, 2022
Author: Healthwise Staff
Medical Review:E. Gregory Thompson MD - Internal Medicine & Adam Husney MD - Family Medicine & Kathleen Romito MD - Family Medicine & Mitchell H. Rosner MD - Nephrology