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Enrolling by Invitation

NCT Number: NCT07421843

Short Interval Versus Long Interval Repeated Extracorporeal Shockwave Lithotripsy (ESWL) for 8-15 mm Renal Stones.

Extracorporeal shockwave lithotripsy (ESWL) is one way to treat renal stones. In this clinical trial our goal is to evaluate if two ESWL the same week is equal good and safe to two ESWL 3 weeks regarding renal stones 8-15 mm.

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Key information

Conditions

Kidney Stone Calculi Female Urogenital Diseases Female Urogenital Diseases and Pregnancy Complications Kidney Calculi Kidney Diseases Male Urogenital Diseases Nephrolithiasis Pathological Conditions, Anatomical Pathological Conditions, Signs and Symptoms Urinary Calculi Urogenital Diseases Urolithiasis Urologic Diseases

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Department of Urology, Helsingborg, Sweden

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About this study

All patients with a renal stone 8-15 mm are asked to participate. If they give consent they are randomized to ESWL with an interval of 2 days or 3 weeks. Data regarding age, gender, stone size, Hounsfield unit, skin to stone distance, urine culture, results from the follow up CT and need for auxillary interventions are extraced from the medical records.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

All patients with a renal stone 8-15 mm who are planned for intervention -

Exclusion criteria

Those who decline to participate, those who are put under guardianship or is less than 18 years old.

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Treatment and study plan

Extracorporeal shockwave lithotripsy (ESWL)

Procedure

ESWL, two treatments with an interval of two days or three weeks.

Primary outcomes

  1. Time to stone free status

    Time frame: From enrollment until closure

    Number of days from the day the treatment starts until the end of follow up.

  2. Complications

    Time frame: From enrollment until closure

    Are there any differences in complications

  3. Number of participants considered stone free at follow up

    Time frame: From enrollment until closure.

    Number of participants who are stone free at the follow up after two ESWL. Stone status will be assessed with computer tomography.

Secondary outcomes

  1. Participant´s experiences

    Time frame: From enrollment until closure

    Participant´s experiences, quality of life questionnaire. Most questions were structured as yes/ no items or included three to four predefined response options.

Sponsors and collaborators

Lead sponsor

Region Skane

Other

Registry information

Official study title

Double Extracorporeal Shockwave Lithotripsy for Renal Stones.

Important dates

Study start
2022
Primary completion
2026
Study completion
2026
First posted
Feb 19, 2026
Registry last updated
Feb 19, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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