Kidney & Bladder Surgery
Shock wave lithotripsy (ESWL)
Breaks kidney stones without surgery or incisions. Using precise sound waves, we turn stones into tiny, sand-like pieces you can pass naturally. A safe, day-case treatment for a quick return to your routine.
Key takeaways
- Breaks kidney stones without surgery or incisions. Using precise sound waves, we turn stones into tiny, sand-like pieces you can pass naturally. A safe, day-case treatment for a quick return to your routine.
- Specialty: Kidney & Bladder Surgery
30–60
Typical treatment timemin
No
General anaesthetic not usually neededanaesthetic
Day case
Usually home in 1–2 hours
Treatment Overview
About Shock wave lithotripsy (ESWL)
Shock Wave Lithotripsy (ESWL) is a non-surgical treatment used to break down kidney or ureteric stones.Instead of using a scalpel or internal scopes, this procedure uses high-energy sound waves (shock waves) aimed from outside the body to crumble the stone into tiny, sand-like particles.These fragments are then small enough for you to pass naturally and painlessly when you pee.
We use precise imaging techniques to target the stone with pinpoint accuracy. This ensures the energy is focused exactly where it's needed, protecting the surrounding healthy tissue and making the treatment more comfortable and more successful.
Safety Information
Benefits, Risks & Side Effects
01
Benefits
The primary benefit of ESWL is that it is completely non-invasive. Because there are no cuts or internal cameras:
No General Anaesthetic: Adults remain awake and only need painkillers. They can walk in and walk out.
Day-Case Treatment: You can usually head home just an hour or two after the procedure.
Minimally invasive: As all of the treatment is applied from outside of the body, this is the most straightforward way to treat stones, without the need for passing telescopes into the body. It is often the first treatment option for smaller stones in the kidney.
02
Risks
While ESWL is exceptionally safe and non-invasive, it is important to understand the potential risks involved. We categorize these complications by their frequency to help you make an informed decision.
🟡 Occasional (Between 1 in 10 and 1 in 50 patients)
Infection: A urinary tract infection may occur, which requires treatment with antibiotics.
Steinstrasse (Stone Street): A collection of small fragments may temporarily block the tube between the kidney and bladder, which may require further help to clear.
Treatment Failure: Some very hard stones may not break up fully, which may require further shock wave sessions or alternative options like laser treatment.
Severe Pain: Occasionally, the pain of passing fragments can be severe enough to require a brief hospital admission.
🔴 Rare (Between 1 in 50 and 1 in 250 patients)
Kidney Bruising: A small blood clot (hematoma) may form around the kidney, which usually resolves on its own but occasionally requires further treatment.
General Medical Issues: Rare complications related to the heart or lungs, such as blood clots or chest infections.
03
Side Effects
To help you prepare for your recovery, we use the following traffic light system to outline common after-effects. Many of these are self-limiting or temporary reactions that settle as the stone fragments pass through your system.
🟢 Common (More than 1 in 10 patients)
Blood in Urine: It is very common to see some blood in your urine for two or three days after the procedure; this is a normal sign that the stone is breaking down.
Skin Sensations: You may notice some minor bruising or a 'flicked' sensation on the skin of your back where the shock waves entered.
Passing Fragments: As tiny fragments begin to pass, you might feel some mild cramping or a sudden urge to go to the toilet.
What We Treat
How Shock wave lithotripsy (ESWL) Can Help You
This treatment is effective for a wide range of health needs. Select a condition below to learn more about how we can support your recovery and improve your daily well-being.
Patient Journey
What to Expect
A step-by-step guide through your Shock wave lithotripsy (ESWL) journey—from preparation and what happens during the procedure to recovery and aftercare.
01/ 03
Before Procedure
On the day of your appointment, you may have have an Xray or scan to confirm the stone size and location. We will also check a urine sample to make sure you don't have an infection.
If you take blood-thinning medication (like Rivaroxaban or Warfarin), you will be asked to stop this before your treatment. You can eat and drink normally prior to your procedure.
02/ 03
During Procedure
You will lie comfortably on a specialised table with a soft, water-filled cushion against your back. Your technician will use X-ray or ultrasound to lock onto the stone's position.
The machine delivers 3,000 to 4,000 gentle 'taps' over about 30 to 60 minutes.
You will hear a rhythmic clicking sound, similar to a metronome.
You may feel a repetitive 'tapping' or 'flicking' sensation. We can provide extra painkillers at any point to ensure you stay relaxed throughout.
03/ 03
After Procedure
After resting for an hour or two, you’ll be ready to go home. The most important job now is to drink 2.5 to 3 litres of water a day—this helps flush the fragments out of your system.
You can use a simple strainer to pee through so you can catch any fragments for us to analyse in the lab. You may have a further lithrotripsy session after the first one, if the stone hasn’t broken completely. Otherwise, about 4 to 6 weeks later, you'll have a follow-up scan to confirm the kidney is completely clear and be seen in the clinic.
Specialists
Specialists for Shock wave lithotripsy (ESWL)
Leading experts for this treatment. View profiles to see clinical backgrounds and current availability.
Our Commitment
Care you can trust
Every treatment is delivered to the same standard: senior consultants, a personalised plan, and the safety of an accredited private hospital behind you.
Consultant-Led Excellence
Receive evidence-based treatments delivered by senior NHS consultants in a professional, specialist setting.
Personalised Care Plans
Your consultant will design a bespoke treatment plan tailored to your specific health goals and lifestyle.
Hospital-Grade Safety
We operate within leading private hospitals, adhering to strict CQC safety and technology standards.
A Heritage of Trust
Our partners bring decades of NHS and private experience, successfully managing thousands of patient cases.
Trusted Resources
Trusted Patient Resources
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Patient Guidance
Frequently Asked Questions
Common questions about this treatment and what to expect.
3 questions
ESWL is most effective for stones under 1cm, where success rates are roughly 85-90%. It can treat stones up to 2cm, but larger stones often require multiple sessions or may be better suited for laser treatment (ureteroscopy) to ensure all fragments are removed in one go.
Reviewed 2 Mar 2026
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Most fragments are reduced to the size of 'sand' or 'gravel' and pass with only minor stinging. However, if a slightly larger fragment passes, it can cause 'renal colic'—a crampy pain in your side. We provide you with painkillers to take at home to manage this, and drinking plenty of water is the best way to make the process easier.
Reviewed 2 Mar 2026
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ESWL uses both high-energy shock waves and X-ray imaging for targeting. Both of these can be harmful to a developing foetus. If you are pregnant and have a kidney stone, we typically use 'temporising' measures like a stent or perform a specialised ultrasound-guided procedure instead.
Reviewed 2 Mar 2026
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