Impact of body position on optic nerve health
Ultrasonographic Evaluation of Optic Nerve Sheath Diameter in Patients Undergoing Retrograde Intrarenal Surgery in the Lithotomy Position
Başakşehir Çam & Sakura City Hospital · NCT06464419
This study is testing how lying in a certain position during kidney surgery affects the health of the optic nerve in patients.
Quick facts
| Study type | Observational |
|---|---|
| Enrollment | 52 (estimated) |
| Ages | 18 Years to 65 Years |
| Sex | All |
| Sponsor | Başakşehir Çam & Sakura City Hospital (other gov) |
| Locations | 1 site (Ankara) |
| Trial ID | NCT06464419 on ClinicalTrials.gov |
What this trial studies
This observational study evaluates how the lithotomy position affects intracranial pressure by measuring the optic nerve sheath diameter using ultrasonography. It hypothesizes that increased venous return and intra-abdominal pressure in this position may lead to changes in optic nerve sheath diameter. The study will involve patients undergoing retrograde intrarenal surgery who meet specific inclusion criteria. The findings could provide insights into the physiological effects of body positioning during surgical procedures.
Who should consider this trial
Good fit: Ideal candidates are patients aged 18-65 who are undergoing retrograde intrarenal surgery and are fully oriented and cooperative.
Not a fit: Patients with a BMI over 30, those with previous intracranial or eye surgery, or those who are disoriented or uncooperative may not benefit from this study.
Why it matters
Potential benefit: If successful, this study could enhance understanding of intracranial pressure dynamics during surgery, potentially improving patient safety and outcomes.
How similar studies have performed: While the specific approach of this study may be novel, similar studies have explored the effects of body positioning on intracranial pressure with varying degrees of success.
Eligibility criteria
Show full inclusion / exclusion criteria
Inclusion Criteria: * Patients who give informed consent * Patients who will undergo retrograde intrarenal surgery * Patients who are fully oriented and cooperative * ASA I-II patients * Patients between the ages of 18-65 Exclusion Criteria: * Disoriented and uncooperative patients * Patients with BMI\>30 * Patients who have had previous intracranial surgery * Patients who have had eye surgery before * Patients allergic to the pharmacological agents used in the study
Where this trial is running
Ankara
- EtlikCityHospital — Ankara, Turkey (Türkiye) (RECRUITING)
Study contacts
- Study coordinator: Cansu Ekici
- Email: cansugun00@gmail.com
- Phone: +905322036054
How to participate
- Review the eligibility criteria above with your treating physician.
- Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
- Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions: Optic Nerve Cup, Intracranial Pressure Increase, ultrasonography, lithotomy position