View clinical trials related to Optic Nerve Sheath Diameter.
Filter by:Determination of high intracranial pressure (ICP) is necessary for the treatment of patients with raised ICP to improve long-term neurological outcomes. Ultrasonographic optic nerve sheath diameter (ONSD) measurement is a noninvasive, easily performed and cost effective technique for detecting high ICP.
We hypothesize that intravenous lidocaine infusion may have beneficial effect to patients undergoing laparoscopic surgeries in Trendelenburg position by preventing ICP elevation.
Direct laryngoscopy and tracheal intubation are associated with increases in intraocular pressure (IOP), intracranial pressure (ICP), heart rate (HR), and blood pressure. The use of supraglottic airway devices (SADs) are known to be beneficial in overcoming the disadvantages of laryngoscopy and tracheal intubation, especially ocular and pressure stress responses. In recent years, it has been reported that ultrasonographic measurement of optic nerve sheath diameter (ONSD) can be used in the diagnosis of increased ICP. The aim of our study is to compare the effects of Proseal laryngeal mask airway (pLMA), Suprem laryngeal mask airway (sLMA) and I-gel on hemodynamic response and ONSD during insertion in adult patients.
Trendelenburg position and carbon dioxide (CO2) pneumoperitoneum are in association with increased intracranial pressure (ICP) reflected by the optic nerve sheath diameter (ONSD). Measurement of ONSD by ultrasound (US) guidance can be used in the diagnosis of ICP. The investigators interrogated the effects of lateral 45° downward position and CO2 insufflation on ONSD in patients undergoing laparoscopic transperitoneal nephrectomy.
In the present study, we compare the effect of sevoflurane and propofol on the optic nerve sheath diameter in patients undergoing middle ear surgery.
One method of indirect measurement of intracranial pressure is using optic nerve sheath diameter. There is no study whether equal volume of contrast medium injection has any increasing effect of optic nerve sheath diameter. This study is designed to measure the changes of optic nerve sheath diameter and cerebral oxygenation when equal volume of contrast medium or normal saline was injected in epidural space.
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 parameters the effect of changes on optic nerve diameter by ultrasonography.
Valid method of indirect measurement of intracranial pressure is using optic nerve sheath diameter. Different volume of injection is known to affect the degree of increase of intracranial pressure. This study is desinged to measure the changes of optic nerve sheath diameter and cerebral oxygenation when different volume of normal saline was injected.
Different amounts of anesthetic gas can be used in the obstetric gynecological surgery operations to be performed with open method. Researchers aimed to compare the effect of gas changes on intraocular nerve diameter by ultrasonography.
Intracranial pressure is known to increase during robot-assisted laparoscopic radical prostatectomy (RALRP) due to steep trendelenberg position. Measurement of optic nerve sheath diameter (ONSD) is a indirect method which can assess the degree of intracranial pressure. This study is designed to measure the ONSD during RALRP under regulation of arterial pressure.