Extracorporeal Shock Wave Lithotripsy (ESWL)

Thank you for choosing Premier Medical Group. We realize that it is a privilege to take care of you and will do our best to make the experience for this procedure as pleasant and easy as possible.

Prior to Procedure

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Your urologist will determine whether medical clearance is needed from your primary care doctor and/or cardiologist. Please make every effort to keep these appointments, as your procedure may need to be rescheduled if we do not receive the proper letters of clearance in time.

One week, 7 days, prior to the procedure, please stop all blood-thinners (this may be coordinated with your other physicians)

  • Aspirin (both 81mg or regular strength)
  • Dipyridamole
  • Plavix (Clopidogrel Bisulfate)
  • Ibuprofen (Motrin, Advil) Naprosyn (Aleve), Celebrex
  • Multivitamins, fish oil and all supplements

Stop 5 days prior to procedure – Warfarin (coumadin). You may be placed on Lovenox, a prescribed blood thinner that is injected, in place of your warfarin. If so, this should be stopped 24 hours before the operation.

One Day Prior to the Procedure

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You will need to do a bowel prep one day prior to the ESWL. Go to your local drug store and buy one bottle of magnesium citrate 10oz. Store it in the refrigerator. It is easier to drink chilled.

  • Eat a light breakfast and lunch.
  • Drink only clear liquids after lunch until midnight. There is no limit on the amount.
  • Water
  • Broth
  • Juice without pulp (apple, cranberry, grape)
  • Popsicles
  • Hard Candy
  • Boost Breeze
  • Clear Jell-O (no fruit in it)
  • Gatorade
  • Carbonated drinks or clear sodas
  • Weak coffee or tea, no creamers. Sugar or sugar substitute is okay.
  • No alcohol
  • No dairy products

At 2:00 pm, drink 10 oz magnesium citrate. Be sure to follow it with 8 oz of water. Be sure to drink this where you will be near a bathroom. It will cause you to have several bowel movements. In the evening, drink 1 liter of a sport-type drink (Gatorade). It must contain electrolytes. You may have any flavor.

Do not eat or drink after midnight the night before our procedure or your procedure will be rescheduled.

The Procedure

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On the morning of the procedure, take only the medication instructed by the office staff with just a small sip of water. You will not be allowed to drive home after the procedure or for at least 24 hours, so be sure to have a friend or family member with you.

After you are prepped for the procedure, you will be positioned on the treatment table, and the stone will be visualized on fluoroscopy. Then, anesthesia will be administered through your IV.

The stone will be fragmented using shock waves. This usually takes 30 to 40 minutes.

Afterwards, you will go home after you have fully awakened from the anesthetic.

Risks of the Procedure

  • Bleeding around the kidney, rarely enough to require a blood transfusion
  • Infection
  • Injury to adjacent structures is very rare, although there have been concerns raised about the potential late development of high blood pressure.
  • Although we try to fragment the stone(s) into small pieces that can pass easily, occasionally a fragment lodges in the ureter and causes pain and obstruction. This can result in the need for another procedure in the operating room, such as ureteroscopy.

After the Procedure

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No strenuous activity or heavy meals that day.

You may resume your normal diet and activity the next day.

Call our office if you develop any of the following: fevers, chills, severe pain in your side, blood in the urine with clots.

Our office is open from 8:30am-5:00pm to assist you. Should an off hours emergency arise, please call (845) 437-5000 and ask for the doctor on-call.

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