Shock Wave Lithotripsy [ESWL]

A non-surgical treatment that uses focused shock waves to break kidney or ureteric stones into smaller fragments.

Shock Wave Lithotripsy [ESWL]

A non-surgical treatment that uses focused shock waves to break kidney or ureteric stones into smaller fragments.

What is this procedure?

Extracorporeal Shock Wave Lithotripsy (ESWL) is a non-surgical treatment used to break kidney or ureteric stones into smaller fragments. It uses externally generated shock waves that pass through the body and are precisely focused on the stone, allowing it to fragment without the need for incisions or telescopic instruments.

What conditions does this procedure treat?

ESWL is used to treat:

Kidney stones

Ureteric stones

Selected stones that are small to moderate in size and suitably positioned

Why is this procedure recommended?

ESWL may be recommended when stones are suitable for non-invasive treatment and are likely to fragment effectively with shock waves. It offers a treatment option that avoids surgery and can be performed without the need for general anaesthesia in many cases.

Suitability depends on factors such as stone size, location, composition, and individual patient characteristics.

How is the procedure carried out?

  • Shock waves are generated outside the body and transmitted through soft tissues

  • Imaging is used to accurately target the stone

  • Repeated shock waves gradually fragment the stone into smaller pieces

  • The fragments are then passed naturally in the urine over time

Anaesthesia, hospital stay & recovery

  • Sensation during treatment varies from mild awareness to discomfort or pain

  • Most patients experience moderate discomfort

  • Pain relief is routinely offered, often using anti-inflammatory medication

  • Some patients may receive stronger pain relief, which can be sedative

  • ESWL is usually performed as a day-case procedure

Specialist expertise & advanced techniques

A high-volume fixed-site shock wave lithotripter allows consistent and effective delivery of ESWL. Experience in patient selection and treatment planning helps optimise outcomes and minimise the need for repeat procedures.

Follow-up & next steps

Stone fragments may pass over days to weeks following treatment. Follow-up imaging may be arranged to assess stone clearance and determine whether further treatment is required. Ongoing advice is provided to reduce the risk of future stone formation

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