Den här översättningen är inte klar ännu. Den här sidan är just nu på engelska.

Gå till den engelska sidan

Cure My Disease

Don't miss your cure!

 Log in / Sign up

Holding breath during kidney stone surgery may speed up treatment

NCT ID NCT01835600

Symptom relief Sponsor: Chinese Medical Association 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tested whether briefly stopping a patient's breathing during kidney stone laser surgery could make stone removal more efficient by reducing kidney movement. 150 adults with kidney stones were randomly assigned to normal breathing, low-volume breathing, or a short breathing pause. The main goal was to see if the pause improved how fast stones were broken down, while checking safety with blood gas tests and heart monitoring.

What this could mean

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

Active substance
transient apnea (temporary pause in breathing during surgery)
What this could lead to
If it works, this could make kidney stone surgery faster and more effective by reducing kidney movement during laser treatment.
What could go wrong
This is a small, single-center study with 150 patients, so results may not apply to everyone. Pausing breathing carries risks like low oxygen or carbon dioxide buildup.

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

150 people

The number who actually took part.

Started

Jun 2020

Finished

Apr 2025

Lead sponsor

A research network

The lead sponsor is a research network or cooperative group.

Who can take part

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

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: 1. Age 18 to 80 years. 2. Scheduled for elective flexible ureteroscopic laser lithotripsy for renal stones under general anesthesia. 3. Preoperative CT confirming renal stones suitable for flexible ureteroscopic lithotripsy. 4. Stone size ≥10 mm and \<20 mm. 5. American Society of Anesthesiologists physical status I to III. 6. Ability to provide written informed consent. Exclusion Criteria: 1. American Society of Anesthesiologists physical status IV or V. 2. Stone size \<10 mm or ≥20 mm. 3. Multiple renal stones requiring a combined or alternative surgical strategy. 4. Radiolucent stone or inadequate radiographic assessment. 5. Uncontrolled urinary tract infection. 6. Reduced pulmonary function, including FEV1/FVC \<70%, or other clinically relevant pulmonary dysfunction judged unsuitable for transient apnea. 7. Significant cardiopulmonary instability or anesthetic contraindication to transient apnea. 8. Pregnancy or planned pregnancy during the study period. 9. Planned combined procedure or alternative surgical strategy. 10. Incomplete preoperative assessment. 11. Declined participation after counselling. 12. Withdrawal of consent before randomization.

Get updates

Get notified about this study

Sign up to get updates when this study changes or when new studies for Kidney stones are added.

Vår säkerhetsrekommendation!

Genom att skicka in godkänner du våra Användarvillkor

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 stones Renal calculi

Contacts and locations

Locations

  • Changhai Hospital, Naval Medical University

    Shanghai, Shanghai Municipality, 200433, China

More trials for these conditions

Other studies related to the condition(s) this trial covers.