NCT07491198Recruiting
Effect Of Trendelenburg Position And Pneumoperitoneum On Optic Nerve Sheath Diameter In Robot-Assisted Prostatectomy
Effect of Steep Trendelenburg Position and Pneumoperitoneum on Optic Nerve Sheath Diameter in Robot-Assisted Laparoscopic Radical Prostatectomy: A Prospective Study
Source: ClinicalTrials.gov · Last updated 10 Sept 2026
Brief summary (registry, in English)
This prospective study aims to evaluate the effect of steep Trendelenburg position and pneumoperitoneum on optic nerve sheath diameter in patients undergoing robot-assisted laparoscopic radical prostatectomy and open radical prostatectomy under general anesthesia. Increased intracranial pressure may occur during robotic surgery due to pneumoperitoneum and head-down positioning. Optic nerve sheath diameter measured by ocular ultrasonography is a non-invasive method used to assess intracranial pressure changes. Hemodynamic and respiratory parameters will also be recorded during surgery. The results of this study may help to better understand the physiological effects of surgical position and pneumoperitoneum during prostatectomy procedures.
- Status (registry)
- Recruiting
- Study type
- Observational
- Enrollment
- 50 (estimated)
- First submitted
- 18 Mar 2026
- Start date
- 5 Jan 2026
- Primary completion date
- 1 Oct 2026
- Lead sponsor
- Ege University
- Diseases
- Prostate cancer
- NCT number
- NCT07491198
What you commit to
- Study type: Observational
- Planned participants: 50
- From 5 Jan 2026 to the primary completion date, 1 Oct 2026
- 1 site in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Prior treatment
- Known ocular disease (glaucoma, retinal detachment, diabetic retinopathy, previous ocular surgery, etc.)
Other illness
- History of intracranial surgery or intracranial lesion
Other
- Intraocular pressure greater than 30 mmHg
- Refusal to participate in the study
Who the study is looking for
- Age ≥ 18 years
- ASA physical status I-III
- Patients scheduled for robot-assisted laparoscopic radical prostatectomy or open radical prostatectomy under general anesthesia
- Written informed consent obtained
Age in the registry: 18 years to - · Sex: Male · Does not accept healthy volunteers
Sites (1)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| Ege University Faculty of Medicine Hospital Coordinator of this site? Confirm its status | Izmir | Turkey (Türkiye) | Recruiting |
This page is information, not medical advice. Discuss any trial with your doctor.