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Urine test changes may flag infection risk after kidney stone surgery

NCT ID NCT07238673

Knowledge-focused Sponsor: The First Affiliated Hospital of Guangzhou Medical University Source: ClinicalTrials.gov ↗

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026

Summary

This study examined 346 adults who had kidney stone surgery to see if changes in their urine white blood cells and nitrite levels before the operation could predict serious infections like fever or sepsis afterward. The goal was to find a faster, simpler way to identify high-risk patients than waiting for standard urine culture results. The findings could help doctors adjust antibiotics or care plans before surgery to prevent complications.

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.

Participants

346 people

The number who actually took part.

Started

Mar 2021

Finished

Jul 2025

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.

Who is studied

This study was based on a prospectively maintained observational cohort of patients undergoing PCNL at the Department of Urology, The First Affiliated Hospital of Guangzhou Medical University, between March 2021 and July 2025

Ages

18 to 80 years

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: * Age ≥ 18 years * Renal stone diameter ≥ 2 cm, or complex renal stones, or failure of extracorporeal shock-wave lithotripsy (ESWL) * American Society of Anesthesiologists (ASA) physical status class I or II * Positive outpatient midstream urine culture Exclusion Criteria: * Age \< 18 years * Fever on admission * Concomitant renal tumor; Active, symptomatic urinary tract infection * Use of antibiotics for other reasons within 1 month prior to admission * Preoperative indwelling ureteral stent, nephrostomy tube, or double-J stent * Uncontrolled diabetes mellitus * Chronic kidney disease stage IIIa or higher (eGFR \< 60 mL/min/1.73 m²) * Ongoing immunosuppressive therapy; Simultaneous bilateral renal stone surgery * Severe comorbidities (e.g., respiratory or circulatory failure) that preclude anesthesia or surgery * Pregnancy or lactation

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Conditions

The condition(s) this trial relates to.

infectious disease with sepsis Kidney Calculi nephrolithiasis Sepsis urinary tract infection urolithiasis

As listed by the trial registrant

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

Kidney calculi Sepsis Urinary tract infections

Contacts and locations

Locations

  • The First Affiliated Hospital of Guangzhou Medical University

    Guangzhou, GuangGong, 510500, China

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