NCT06209034

Intraoperative Optic Nerve Sheath Diameter Changes After Laparoscopic Surgery

Ultrasonographic Evaluation of Intraoperative Optic Nerve Sheath Diameter Changes in Patients Undergoing Laparoscopic Surgery

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 55 (actual)
• Sponsor: Kocaeli University · Academic / Other
• Sex: All
• Age: 18 Years – 75 Years
• Healthy volunteers: Not accepted

Summary

Laparoscopic surgery is a widely used alternative to open surgery; Advantages include reduced bleeding and pain intensity, shorter hospital stay, and improved cosmetic results. Laparoscopic surgery involves the creation of a carbon dioxide (CO2) pneumoperitoneum to facilitate a clear surgical view, which can result in increased intracranial pressure (ICP). Ultrasonographic measurement of optic nerve sheath diameter (ONSD) is a simple, non-invasive, yet reliable technique for ICP assessment.Ultrasonographic assessment of optic nerve sheath diameter (ONSD) has been proposed as a non-invasive measurement of intracranial pressure.

Detailed description

Ultrasonographic measurement of optic nerve sheath diameter (ONSD) is a simple, non-invasive, yet reliable technique for ICP assessment. Previous studies have demonstrated that ultrasonographic measurement of ONSD correlates with the degree of ICP and can detect intracranial hypertension in a variety of clinical settings. It was planned to measure the optic nerve sheath throughout the surgery with the help of a linear ultrasound probe. Ultrasonographically, in each measurement, the optic nerve sheath diameter (ONSD) was detected 3 mm behind the entry point of the optic nerve into the globe in both eyes. ONSD will be measured bilaterally 3 mm behind the papilla. It will be evaluated by transverse measurement for each optic nerve.

Conditions

• Optic Nerve Sheath Diameter
• Intracranial Pressure Increase

Interventions

Type	Name	Description
OTHER	Optic nerve sheath measurement	ONSD was measured bilaterally 3 mm posterior to the papilla. Transverse measurements were made for each optic nerve.

Timeline

• Start date: 2023-12-30
• Primary completion: 2024-07-31
• Completion: 2024-09-15
• First posted: 2024-01-17
• Last updated: 2026-03-18

Locations

2 sites across 1 country: Turkey (Türkiye)