Clinical trials: Optic Nerve Sheath Diameter
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
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
Normal Diameter of Optic Nerve
Ultrasonographic Measurement of the Optic Nerve Sheath Diameter in the Taiwanese Healthy Volunteers
The investigators aimed to analyze the ONSD diameters and its associated factors in Taiwanese healthy volunteers. We plan to recruit 150 healthy volunteers aged more than 20 years old.
- Trial name
- NCT04600570
- Testing
- ultrasound
- Where
- Taiwan
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- National Taiwan University Hospital
Optic Nerve Sheath Diameter
The Effects of Lateral 45° Downward Position on the Optic Nerve Sheath Diameter
Trendelenburg position and carbon dioxide (CO2) pneumoperitoneum are in association with increased intracranial pressure (ICP) reflected by the optic nerve sheath diameter (ONSD).
- Trial name
- NCT05185908
- Testing
- Measurement of the optic nerve sheath diameter by ultrasound-guidance.
- Volunteers
- 26 people, healthy volunteers welcome
- Sponsor
- Istanbul 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