Evaluating blood flow and oxygen levels in the brain during laparoscopic gallbladder surgery

Evaluation of Cerebral Blood Flow and Cerebral Oxygenation With Transcranial Doppler and NIRS in Laparoscopic Cholecystectomy Cases

Observational Uludag University · NCT06036498

This study is testing how blood flow and oxygen levels in the brain change during laparoscopic gallbladder surgery to see if certain techniques can help understand any risks involved.

Quick facts

Study typeObservational
Enrollment40 (estimated)
Ages18 Years to 65 Years
SexAll
SponsorUludag University Academic / other
Locations1 site (Bursa, Nilufer)
Trial IDNCT06036498 on ClinicalTrials.gov

What this trial studies

This observational study aims to assess changes in cerebral blood flow and oxygenation in patients undergoing laparoscopic cholecystectomy, particularly focusing on the effects of pneumoperitoneum. Researchers will utilize Near Infrared Spectrophotometry (NIRS) and Transcranial Doppler Ultrasonography (TCD) to monitor these changes. The study will compare the outcomes of both assessment methods to determine any significant differences. The findings could provide insights into the neurological risks associated with prolonged laparoscopic surgeries.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 to 65 with an ASA classification of 1-3 scheduled for elective laparoscopic cholecystectomy.

Not a fit: Patients with ASA classification of 4 and above, those under 18 or over 65, and individuals with a history of cerebrovascular issues will not benefit from this study.

Why it matters

Potential benefit: If successful, this study could enhance patient safety by identifying potential neurological complications during laparoscopic surgeries.

How similar studies have performed: While the approach of using NIRS and TCD in this context is relatively novel, similar studies have shown promise in monitoring cerebral perfusion during surgical procedures.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients with American Society of Anesthesiology (ASA) 1-3 classification,
* Both male and female patients between the ages of 18 to 65,
* Patients scheduled for elective laparoscopic cholecystectomy.

Exclusion Criteria:

* American Society of Anesthesiology (ASA) 4 and above patient groups,
* Patients aged under 18 and over 65,
* Patients with a history of known previous cerebrovascular accident (CVA),
* Patients with follow-up due to Cerebrovascular Ischemic Brain Attack Syndrome (CIBAS),
* Patients diagnosed with Carotid Stenosis,
* Patients diagnosed with peripheral and central vascular diseases,
* Patients with general debilitation and extreme senility,
* Cases that require conversion to laparotomy during the intraoperative period.

Where this trial is running

Bursa, Nilufer

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Cerebral HypoperfusionCerebral OcclusionCholecystitisGallstoneCholecystitis/CholelithiasisNear Infra-Red SpectrophotometryCerebral OxygenisationTranscranial Doppler Ultrasonography
Last reviewed 2026-06-09 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.