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Kidney stone surgery without a hospital stay: can it be done safely?

NCT ID NCT04690010

Symptom relief Sponsor: University of California, San Francisco 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
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 Results may not be published yet.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 This study
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This status has not been confirmed recently, so it may be out of date.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 Sep 11, 2026 · Last updated Sep 11, 2026

Summary

Researchers compare two ways to perform percutaneous nephrolithotomy, a surgery to remove large kidney stones. One approach sends patients home the same day without a nephrostomy tube, a small tube placed in the back to drain urine. The other keeps patients in the hospital for one to three days with a nephrostomy tube. The trial measures complications such as emergency visits, readmissions, and need for additional procedures, and checks whether patients become stone-free.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Two surgical approaches for kidney stone removal: same-day discharge without a nephrostomy tube versus inpatient stay with a nephrostomy tube
What this could lead to
If same-day discharge proves safe, patients could avoid a hospital stay and recover at home after kidney stone surgery.
What could go wrong
Same-day discharge may lead to more complications or readmissions than standard inpatient care. The trial is small and may not capture rare problems.

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.

Expected to start

Oct 2022

An estimate. Start dates often move.

Finished

Nov 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: * Scheduled for PCNL who agree to be included in the study * Age 18 years or more * Absence of renal anatomic abnormalities * Patients undergoing bilateral procedures or those with pre-operative indwelling ureteral stents or nephrostomy tubes will be included Exclusion Criteria: Pre-operative: * Age \<18 * Pregnancy * Positive urine culture within 3 weeks * Bleeding disorder * Presence of renal anatomic abnormalities * Solitary kidney * Need for admission based on comorbidities determined by anesthesiologist Intra-operative: * Significant ureteral or pelvicalyceal injury * Significant intraoperative hemorrhage Post-operative: * Temperature \>100.4 Fahrenheit * Hemodynamic instability (defined as 2 of 3: heart rate \>90 beats per minute, respiratory rate \>20 breaths per minute, systolic blood pressure \<90mmHg, or drop in systolic blood pressure \>40mmHg) * Hemoglobin drop of \> 3 g/dL compared to pre-operative bloodwork * Transfusion of blood products * Pneumothorax or hemothorax on chest X ray * Uncontrolled nausea, vomiting, or pain

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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.

Kidney calculi

Contacts and locations

Locations

  • University of California, San Francisco

    San Francisco, California, 94143, United States

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