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Assessment of Optic Sheat Diameter (ONSD) and Eyeball Transverse Diameter (ETD) Ratio Measurement From Ocular Ultrasound
Sponsor: Gaziantep City Hospital
Summary
The aim of this study is to evaluate the effects of different carbon dioxide gas insufflation pressures on the ultrasound-guided optic nerve sheath diameter in patients undergoing laparoscopic cholecystectomy and to determine the possible relationship between these changes and intracranial pressure. The study aims to gain a better understanding of the neurophysiological effects of gas pressures used during laparoscopic surgery and to obtain scientific data aimed at improving patient safety.
Official title: Assessment of Increased Intracranial Pressure by Optic Nerve Sheath Diameter (ONSD), Eyeball Transverse Diameter (ETD) and ONSD/ETD Ratio Measurement From Ocular Ultrasound
Key Details
Gender
All
Age Range
18 Years - 80 Years
Study Type
OBSERVATIONAL
Enrollment
68
Start Date
2026-08-30
Completion Date
2026-10-30
Last Updated
2026-08-25
Healthy Volunteers
No
Conditions
Interventions
Low Pressure Group
Data will be collected on patients who underwent surgery within a pressure range of 10-14, depending on the surgeon's preference.
High Pressure Group
Data will be collected on patients who underwent surgery within a pressure range of 14-18, depending on the surgeon's preference.