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Which kidney stone surgery is cheaper and safer? new study has answers

NCT ID NCT07371494

Symptom relief Sponsor: Hanoi Medical University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Sep 21, 2026 · Updated 1 time

Summary

This study compared two common surgeries for kidney stones 20 mm or smaller: super-mini percutaneous nephrolithotomy (SMP) and flexible ureteroscopy (fURS). Researchers in Vietnam randomly assigned 72 adults to one of the two procedures and measured how well the stones were removed, along with costs and safety. The goal is to help doctors and patients choose the best option, especially in hospitals with limited resources.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

72 people

The number who actually took part.

Started

Jan 2024

Finished

Dec 2024

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Adult patients (≥18 years of age). * Patients with renal stones measuring ≤20 mm in maximal diameter on preoperative imaging. * No prior surgical or interventional procedure during the same hospital admission. * Ability and willingness to provide written informed consent. Exclusion Criteria: * Pregnancy. * Coagulation disorders or bleeding diathesis contraindicating surgery. * Contraindications to either Super-mini Percutaneous Nephrolithotomy (SMP) or Flexible Ureteroscopy (fURS). * Patients undergoing SMP or fURS for ureteral stones that migrated back into the kidney.

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Conditions

The condition(s) this trial relates to.

Kidney Calculi nephrolithiasis

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Renal calculi (kidney stones) ≤ 20 MM

Contacts and locations

Locations

  • Bach Mai Hospital, Department of Urology

    Hanoi, 100000, Vietnam