NCT06464419

Effect of Lithotomy Position on Optic Nerve Sheath Diameter

Ultrasonographic Evaluation of Optic Nerve Sheath Diameter in Patients Undergoing Retrograde Intrarenal Surgery in the Lithotomy Position

• Status: Recruiting
• Phase: —
• Study type: Observational
• Enrollment: 52 (estimated)
• Sponsor: Başakşehir Çam & Sakura City Hospital · Other Government
• Sex: All
• Age: 18 Years – 65 Years
• Healthy volunteers: Accepted

Summary

In this study, the effect of increased venous return and increased intra-abdominal pressure on intracranial pressure in the lithotomy position was evaluated.

Detailed description

In the lithotomy position, it is possible that venous return in the lower extremities increases and intra-abdominal pressure increases due to the position. At the same time, it is possible that the intracompartmental pressure in the extremities increases because the venous structure is compressed by placing the lower extremities on supports. Considering both conditions, it is predicted that there may be an increase in the optic nerve sheath diameter due to increased intracranial pressure in patients placed in the lithotomy position. The aim of this study is to investigate the effect of the position on intracranial pressure by ultrasonographically evaluating the optic nerve sheath diameter in the lithotomy position.

Conditions

• Optic Nerve Cup
• Intracranial Pressure Increase

Interventions

Type	Name	Description
DEVICE	ultrasound	Measurement of optic nerve sheath diameter by ultrasound

Timeline

• Start date: 2024-06-10
• Primary completion: 2024-08-10
• Completion: 2024-09-01
• First posted: 2024-06-18
• Last updated: 2024-08-05

Locations

1 site across 1 country: Turkey (Türkiye)