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Optic Nerve Sheath Diameter Changes During Bariatric Surgery

NCT07662538 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 56

Last updated 2026-06-23

No results posted yet for this study

Summary

This prospective clinical study aimed to evaluate the effects of pneumoperitoneum and patient positioning on intracranial pressure in patients undergoing bariatric surgery. Intracranial pressure was assessed noninvasively using ultrasonographic optic nerve sheath diameter (ONSD) measurements. ONSD measurements were performed before anesthesia induction in the supine position (T0), 5 minutes after anesthesia induction (T1), 5 minutes after creation of pneumoperitoneum and placement in the reverse Trendelenburg position (T2), at the 20th minute of pneumoperitoneum (T3), and 5 minutes after termination of pneumoperitoneum and return to the supine position (T4). The study aimed to determine the effects of anesthesia, pneumoperitoneum, and surgical positioning on intracranial pressure during bariatric surgery

Conditions

Interventions

DIAGNOSTIC_TEST

Optic Nerve Sheath Diameter Measurement

Ultrasonographic measurement of optic nerve sheath diameter (ONSD) performed at predefined perioperative time points to assess changes in intracranial pressure during bariatric surgery.

Sponsors & Collaborators

  • Fatih Sultan Mehmet Training and Research Hospital

    lead OTHER

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2022-01-01
Primary Completion
2024-01-30
Completion
2024-01-30

Countries

  • Turkey (Türkiye)

Study Locations

More Related Trials

Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07662538 on ClinicalTrials.gov