Analysis of Change of Optic Nerve Sheath Diameter in in Patients Operated for Urological Reasons

Study Overview
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Brief Summary
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The assessment of the diameter of the optic nerve sheath (ONSD) using ultrasound can be a very helpful tool in the assessment of increased intracranial pressure in patients operated for urological procedures.

Detailed Description
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Advantages of using ultrasound in the assessment of intracranial pressure: simple, bedside examination, repetitive, generally available, cheap, no exposure to X-rays, no need to transport the patient to the CT laboratory Differential diagnosis: Widening of the size of the optic nerve sheath outside of increased intracranial pressure may occur in the following pathologies: optic neuritis optic nerve injuries meningioma of the optic nerve arachnoid cyst around the optic nerve tumors of the cavernous sinus Blood edema may occur due to impaired blood flow. The research is to determine whether the patient's position for urological procedures is safe for the patients and whether as a result of staying in such a position there is no development of cerebral edema.

Official Title
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Analysis of Change of Optic Nerve Sheath Diameter in in Patients Operated for Urological Reasons

Conditions
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Anaesthetic Complication Neurological, Central Nervous System Depression

Intervention / Treatment
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* Diagnostic Test: Change of Optic Nerve Sheath Diameter


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patients undergoing urologic operation Adults 18 to 90 years of age American Society of Anesthesiologists Physical grade 1-3 Exclusion Criteria: Patients who did not agree to participate in the study Patients with ophthalmic diseases Patients with previous history of ophthalmic surgery Patients with neurological disorders Patients with history of head surgery due to neurological disorders Patients with history of disease with increased intracranial pressure Patients with history of disease with increased intraocular pressure

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 90 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| change of the optic nerve sheath diameter<br>The test group will be male and female patients, aged over 18 and below 90 years of age. Each patient will be operated for urological reasons in the position for lithotomy. | Diagnostic Test: Change of Optic Nerve Sheath Diameter<br>* In patients, the optic nerve sheath width (ONSD) examination will be performed twice: for the first time immediately after general anesthesia and again after surgery after placing the patient in a position on the back.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Optic Nerve Sheath Diameter |  | 10 hours | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| neurological complications |  | 5 days | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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point of care USG, Optic Nerve Sheath Diameter, Urological Anaesthesia