Clinical trials: Optic Nerve Sheath Diameter
Laparoscopic Gynecological Surgery
Effects of Standard and Modified Z-Trendelenburg Positions on Cerebral Oxygenation and Optic Nerve Sheath Diameter
The purpose of this study is to compare the effects of the standard Trendelenburg position and the modified Z-Trendelenburg position on cerebral oxygenation and optic nerve sheath diameter (ONSD) in patients undergoing…
- Trial name
- MOD-TREND (NCT07632287)
- Testing
- Standard Trendelenburg Position, Modified Z-Trendelenburg Position
- Where
- Turkey (Türkiye)
- Volunteers
- 70 people, healthy volunteers welcome
- Sponsor
- Ankara Etlik City Hospital
Brachial Plexus Injury
Changes in Optic Nerve Sheath Diameter in Response to Various Levels of End Tidal Carbon Dioxide Levels
Intracranial Pressure ( ICP ) monitoring is an essential component of traumatic brain injured ( TBI ) patients management. The clinical signs of raised ICP may be unreliable and may reflect relatively late cerebral…
- Trial name
- NCT02711774
- Testing
- ultrasonography
- Where
- India
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- All India Institute of Medical Sciences
Optic Nerve Sheath Diameter
Different Resectoscopes Effects to Optic Nerve Sheath Diameter
In this study, in patients with benign prostatic hypertrophy, monopolar and transurethral prostate using bipolar techniques in resection; serum electrolytes in the perioperative period, osmolarity can occur in hemodynamic…
- Trial name
- NCT04765397
- Testing
- Effect of different resectoscope fluids on optic nerve diameter measured by ultrasound
- Where
- Turkey (Türkiye)
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Bursa Yuksek Ihtisas Training and Research Hospital
Cholecystitis
Comparison of the Effects of Different PEEP Values With USG on Optic Nerve Sheath Diameter
Laparoscopic surgeries are now more popular because of the advantages such as shorter hospital stay, minimal scar. In order to perform laparoscopic surgery, pneumoperitoneum should be initiated.
- Trial name
- NCT06224868
- Testing
- insufflation, desufflation
- Volunteers
- 45 people, healthy volunteers welcome
- Sponsor
- Baskent University
Elevated Intracranial Pressure (ICP)
Optic Nerve Sheath Diameter (ONSD) With the Raised PCO2 and Internal Jugular Venous Occlusion
Monitoring the ICP is the most important aspect of the management of these patients. Recently, transorbital ultrasonography has gained popularity as a noninvasive bedside exam that has been shown to be useful in the diagnosis of…
- Trial name
- NCT02361658
- Testing
- Ultrasonographic of the optic nerve sheath diameter, RespirAct™, Neck collar
- Where
- Canada
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Lashmi Venkatraghavan
Anesthesia, Intraocular Pressure
Intraocular Pressure, Optic Nerve Sheath Diameter and Optic Perfusion Pressure of Minimal Low and High-Flow Anesthesia
The aim of this clinical trial is to determine the effect of minimal low-flow versus high-flow anesthesia on intraocular pressure (IOP) by non-contact tonometry, optic nerve sheath diameter (ONSD) by USG and optic perfusion…
- Conditions
- Anesthesia, Intraocular Pressure, Nephrolithiasis
- Trial name
- NCT06684704
- Testing
- minimal and high flow anesthesia
- Where
- Turkey (Türkiye)
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Elazıg Fethi Sekin Sehir Hastanesi
ONSD in Laparoscopic Surgery
"Optic Nerve Sheath Diameter; Low vs. Conventional Insufflation Pressures''
Objective: This study investigates the impact of carbon dioxide (CO2) pneumoperitoneum on optic nerve sheath diameter (ONSD) and intracranial pressure (ICP) in patients undergoing total laparoscopic hysterectomy.
- Trial name
- NCT06650475
- Testing
- Using low or standart pressure
- Where
- 2 sites in Turkey (Türkiye)
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Konya City Hospital
Intracranial Pressure Increase
Effect of Tourniquet Application on Optic Nerve Sheath Diameter
The aim of the study to investigate the effect of tourniquet application on optic nerve sheath diameter (ONSD) and cerebral oxygenation during lower extremity surgery.
- Trial name
- NCT04758091
- Where
- Turkey (Türkiye)
- Volunteers
- 1 people, healthy volunteers welcome
- Sponsor
- Zonguldak Bulent Ecevit University
Pre-Eclampsia
Optic Nerve Sheath Measurement and Angiogenic Factors in Patients With Pre-eclampsia.
Hypertensive disorders of pregnancy (HPT) are an important cause of maternal-feto-neonatal morbidity and mortality, being one of the three leading causes of maternal death in our country and in developing countries.
- Trial name
- NCT06122220
- Testing
- ONSD+AF
- Where
- Panama
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Saint Thomas Hospital, Panama
Intraocular Pressure
Effects of Intubation on Intra-ocular Pressure and Optic Nerve Sheath Diameter
Brief Summary: In this study, the investigators aimed to compare the effects of different types of endotracheal instruments (Machintosh laryngoscope, McGrath videoingoscope and C-Mac videoryngoscope) on intraocular pressure…
- Trial name
- [Intubation] (NCT05763056)
- Testing
- McGrath videolaryngoscopy, C-MAC videolaryngoscopy, Direct laryngoscopy
- Where
- Turkey (Türkiye)
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Inonu University
Pseudotumor Cerebri
Optic Nerve Sheath Diameters in Idiopathic Intracranial Hypertension Patients
Idiopathic intracranial hypertensionis a type of increased intracranial pressure. Diagnosis is made by lumbar puncture, which is an invasive technique.
- Trial name
- NCT04603118
- Testing
- Optic ultrasonography, Lumbar puncture
- Where
- Turkey (Türkiye)
- Volunteers
- 47 people, healthy volunteers welcome
- Sponsor
- Ege University
Intraocular Pressure, Optic Nerve Sheath Diameter
Intraocular Pressure Versus Optic Nerve Sheath Diameter
This study involves observing and comparing Intraocular Pressure and Optic Nerve Sheath Diameter in steep trendelenburg position. Both observations will be done in same patient over the surgical duration.
- Trial name
- NCT02697825
- Testing
- Schiotz tonometer for Intraocular Pressure
- Where
- India
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Rajiv Gandhi Cancer Institute & Research Center, India
Healthy Volunteer, Healthy Volunteer Study
Measurement of the Optic Nerve Diameter in Different Healthcare Operators
The study evaluates the effectiveness of a theoretical-practical training course for the ultrasound measurement of the optic nerve sheath diameter (ONSD), a non-invasive method used to estimate intracranial pressure (ICP).
- Trial name
- NCT06830460
- Testing
- Training
- Where
- Italy
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- University Magna Graecia
Primary Open Angle Glaucoma, Normal Tension Glaucoma
Correlation of Orbital Cerebrospinal Fluid Pressure and Retinal Venous Outflow in Primary Open-angle Glaucoma
A spontaneous venous pulsation over the optic disc is an ophthalmological sign that can potentially be found in up to 98% of healthy individuals.
- Trial name
- NCT01795014
- Where
- Belgium
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Universitaire Ziekenhuizen KU Leuven
Optic Nerve Sheath Neoplasm, Intracranial Pressure Increase
Optic Nerve Sheath Diameter in Pediatric Patients
Endotracheal intubation and laryngeal mask are generally applied to secure the airway during general anesthesia. There is a widespread opinion among anesthesiologists that endotracheal intubation increases intracranial pressure.
- Conditions
- Optic Nerve Sheath Neoplasm, Intracranial Pressure Increase, Intubation Complication, Airway Complication of Anesthesia
- Trial name
- NCT05445271
- Testing
- Optic nerve sheath diameter measurement with linear ultrasound
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Kahramanmaras Sutcu Imam University
Open Angle Glaucoma, Normal Tension Glaucoma
Study on Ocular Blood Flow and the Orbital Cerebrospinal Fluid Pressure in Glaucoma
Ocular blood flow has been consistently demonstrated to be altered in glaucoma patients when compared to otherwise healthy individuals.
- Trial name
- NCT01802463
- Where
- Belgium
- Volunteers
- 197 people, healthy volunteers welcome
- Sponsor
- Universitaire Ziekenhuizen KU Leuven
Intracranial Hypertension
Comparison of the Effects of Deep and Moderate Neuromuscular Blockade on Optic Nerve Sheath Diameter
Increased intracranial pressure (IICP) is a common problem in traumatic brain injuries and many medical diseases. Early recognition of IICP can save lives.
- Trial name
- MBLONDE (NCT04211064)
- Testing
- Ultrasonographic measurement of optic nerve sheath diameter, Deep neuromuscular block, Moderate neuromuscular block
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Bezmialem Vakif University
Optic Nerve Sheath Diameter, Caudal Block
Effect of Caudal Block Injection Rate on Optic Nerve Sheath Diameter in Pediatric Surgeries
Our prospective observational study will include patients between the ages of 1-7 years, ASA 1-2, who will undergo elective surgery under general anesthesia, whose consent was obtained by their parents for the procedure to be…
- Trial name
- NCT06187714
- Testing
- caudal block rate
- Where
- Turkey (Türkiye)
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Prof. Dr. Cemil Tascıoglu Education and Research Hospital Organization
Intracranial Pressure Increase, Pneumoperitoneum
The Effect of Pneumoperitoneum Timing on Intracranial Pressure in Laparoscopy
Reverse Trendelenburg position has been shown to slightly reduce the intracranial pressure associated with pneumoperitoneum. However, there are no studies on the effect of the timing of reverse Trendelenburg position on…
- Trial name
- NCT04224532
- Testing
- Pneumoperitoneum Timing (Before Positioning), Pneumoperitoneum Timing (After Positioning)
- Where
- Turkey (Türkiye)
- Volunteers
- 79 people, healthy volunteers welcome
- Sponsor
- Bagcilar Training and Research Hospital
Optic Nerve
Measurement of the Optic Nerve Sheath Diameter
This study is a prospective assessment of the accuracy of ocular ultrasound as a tool to measure the diameter of the optic nerve sheath and the eyeball transverse diameter in healthy adult patients presenting to the Emergency…
- Trial name
- NCT05548335
- Testing
- Ocular Ultrasound
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Cleveland Clinic Akron General