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Showing 1-8 of 8 trials
NCT06428461
This study aimed to evaluate the anesthesia adequacy, side effects, and complication rates, as well as the postoperative pain relief effectiveness of supraclavicular brachial plexus blocks administered at different volumes under ultrasound guidance. Additionally, the investigators utilized ultrasound to measure optic nerve sheath diameters and investigated their relationship with intracranial pressure across varying block volumes.
NCT07155109
The aim of this study is to investigate the effects of low and normal intraperitoneal pressures on intraoperative optic nerve sheath diameter in laparoscopic gyneco-oncologic surgeries.
NCT06771232
High positive end-expiratory pressure (PEEP) levels required to achieve clinical benefits may increase ICP and reduce cerebral perfusion pressure (CPP) in patients at risk of intracranial hypertension. However, individualizing ventilation parameters is essential for each patient. Among protective ventilation strategies, PEEP is key to preventing alveolar collapse. The PEEP level that minimizes alveolar collapse while avoiding overdistension of the pulmonary parenchyma is known as the Best PEEP. This study aims to evaluate the application of Best PEEP in cranial neurosurgery.
NCT06048900
The Lloyd Davies position is a position used in laparoscopic hysterectomies where the head is lowered 45 degrees and the legs are bent from the knee area.It is a version of the Trendelenburg position. Both this position and for laparoscopic surgery carbon dioxide (CO2) gas given into the abdomen, causes problems for the patient. Increased abdominal and thoracic pressure impairs venous return and increases intracranial pressure. Optic nerve sheath diameter can be measured by placing an ultrasound probe over the eye. It is possible to follow up the increase in intracranial pressure with this diameter measurement. In this study, it was planned to measure the optic nerve sheath diameter by ultrasound in patients who will undergo laparoscopic hysterectomy. It is aimed to observe the changes in the increase in intracranial pressure as the time lengthens with the measurements to be made at certain intervals during the operation. Secondary aim is to determine whether there is a cut-off value where the intracranial pressure starts to increase.
NCT05170295
Rheoencephalography (REG) shows promise as a method for noninvasive neuromonitoring, because it reflects cerebrovascular reactivity. This protocol will study clinical and technical conditions required to use REG. Additionally, our goal is to study noninvasive peripheral bioimpedance pulse waveforms in order to substitute invasive SAP. A previous study demonstrated that REG can be used to detect spreading depolarization (SD), the early sign of brain metabolic disturbance. SD can be measured invasively with DC EEG amplifiers only. Our goal is to create an automatic notification function for REG monitoring indicating change of clinical conditions.
NCT04004923
Two distinction fluids are used in operative hysteroscopy. One is monopolar and the second is bipolar. The monopolar fluid contains mannitol and the bipolar fluid contains serum physiologic. This study aims to compare intracranial pressure in patients undergoing monopolar and bipolar hysteroscopy.
NCT03227354
Primary objective of this study is to assess the accuracy and precision of intracranial pressure (ICP) measurement in patients after traumatic brain injury and subarachnoid hemorrhage when using simultaneous, non-invasive measurement compared to standard, invasive, measurement. Secondary objective: is to assess the correlation of intracranial pressure (ICP) measurement in patients after traumatic brain injury and subarachnoid hemorrhage between simultaneous, non-invasive measurement and standard, invasive,measurement
NCT03221959
This is a single centre, observational study with a medical device which has Conformité Européenne (CE) marking. The aim of the study is to demonstrate that patients with malignant middle cerebral artery infarction (M-MCA) show an increased intra-cranial pressure (ICP) compared to neurological patients without M-MCA infarction or other space-occupying indications.