Optic Nerve Sheath Diameter in Urologic Surgery

Comparison of Optic Nerve Sheath Diameter and Cerebral Regional Oxygen Saturation in Urological Surgery While Lithotomy Position

Status

UNKNOWN

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT05846555

Enrollment

Registered

2023-05-06

Start date

2023-04-18

Completion date

2023-12-05

Last updated

2023-05-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Anesthesia, Urological Manifestations

Keywords

optic nerve sheath diameter, lithotomy position, near infrared spectrometer

Brief summary

The investigators aimed to determine intracranial pressure changes during spinal and general anesthesia by using optic nerve sheath diameter and near infrared spectrometer in urologic surgery patients in lithotomy position. Also the investigators plan to evaluate to measure intrathoracic pressure effects to intracranial pressure.

Detailed description

The patients will be divided into 2 groups as those who underwent general anesthesia and spinal anesthesia.Both groups at the specified times. (The patient is supine for both groups before the start of the anesthesia procedure.) position T0, for group G, T1G 2 minutes after intubation, T1S 2 minutes after spinal anesthesia for group S, two T2, lithotomy 5 minutes after the lithotomy position for the group lithotomy to T3 30 minutes after the T4, T5 in PACU ) 60 minutes after optic nerve sheath diameter (OSC) values and lung assessment (LUS), cerebral cerebral palsy with Near-infrared spectroscopy (NIRS) oxygenation, mean arterial pressure, peripheral oxygen saturation, serum sodium, arterial carbon dioxide values and heart rate values will be recorded and significant statistical differences will be evaluated.

Interventions

PROCEDUREurologic surgery

surgery

Study design

Observational model

COHORT

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

18 Years to 90 Years

Healthy volunteers

Inclusion criteria

* ASA 1-2-3, patients * over 18 years of age who will undergo urological surgery

Exclusion criteria

* Existing disease that causes an increase in intracranial pressure * Patients with optic nerve pathology, * Ophthalmologic diseases

Design outcomes

Primary

Measure	Time frame	Description
intracranial pressure changes during Spinal and general anesthesia	position T0, for group G, T1G 2 minutes after intubation, T1S 2 minutes after spinal anesthesia for group S, two T2, lithotomy 5 minutes after the lithotomy position for the group lithotomy to T3 30 minutes after the T4, T5 in PACU ) 60 minutes after	optic nerve sheat diameter as a predictor of intracranial pressure

Countries

Turkey (Türkiye)

Contacts

Primary Contactsibel bektas

sibel-bektas@yahoo.com02129453030

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026