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Anesthesia technique may affect eye pressure during kidney stone procedure

NCT ID NCT06684704

Knowledge-focused Sponsor: Elazıg Fethi Sekin Sehir Hastanesi 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026

Summary

This completed study looked at how two different anesthesia gas flows affect eye pressure and optic nerve during kidney stone surgery. Sixty adults having the procedure were randomly assigned to receive either minimal low-flow or high-flow anesthesia. Researchers measured eye pressure, optic nerve sheath diameter, and optic perfusion pressure to see which method might be safer for the eyes.

What this could mean

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

What this could lead to
If successful, this could help anesthesiologists choose safer anesthesia methods to protect eyes during certain surgeries.
What could go wrong
This is a small, completed study with only 60 participants. Results may not apply to all patients or surgeries.

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

60 people

The number who actually took part.

Started

Sep 2024

Finished

Aug 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.

Ages

18 to 60 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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: * Patients aged 18-60 years * ASA (American Society of Anesthesiologists) risk classification I-II-III * Unilateral percutaneous nephrolithotomy (PCNL) operation Exclusion Criteria: * Patients with drug and alcohol addiction, * long-term smoking history (at least 1 pack/1 year), * BMI\>35, * chronic lung disease, * cerebrovascular disease, * severe systemic diseases such as kidney, liver or advanced heart failure .

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Conditions

The condition(s) this trial relates to.

nephrolithiasis ocular hypertension

As listed by the trial registrant

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

Anesthesia Intraocular pressure Nephrolithiasis

Contacts and locations

Locations

  • Elazığ Fethi Sekin City Hospital

    Elâzığ, Seçiniz, 23100, Turkey (Türkiye)

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