Active clinical trials for "Supratentorial Neoplasms"

We aim to determine the level of intraoperative PEEP that optimizes lung compliance without causing a rise in subdural pressure and if we can utilize optic nerve sheath diameter measurement as an indicator for ICP while optimizing lung compliance during supratentorial tumor surgeries.

Mannitol is widely used in patients with elevated intracranial pressure. In neurosurgical field, especially in large size or with brain edema, it is necessary to decrease brain volume to facilitate surgical approach. In general, 0.25 -1.5g of mannitol per kilogram has been known to decrease ICP effectively. But there are some debates in regard to appropriate dose of mannitol.

This study aims to determine the relationship between heart rate variability and intraoperative brain relaxation conditions in patients with brain tumors.

Compared with MRI or CT, brain biological electrical impedance tomography were performed on patients with supratentorial tumors and healthy people . The AUC (area under the curve) of ROC, which is associated with the increased maximum and the difference between left and right equilibrium of impedance value, is calculated. The specificity of brain biological electrical impedance tomography in screening supratentorial tumors are evaluated. To compare the changes of parameters detected by brain biological electrical impedance tomography, the enrolled brain tumor patients with cerebral edema were paired with themselves and intravenous infusion of mannitol so that the sensitivity of this device in monitoring cerebral edema can be evaluated.

Study was designed to evaluate optimal timing for selective scalp block in patients undergoing general anesthesia for supratentorial craniotomy.Pain score assessed by visual analog scale (VAS) preoperatively (baseline) and after extubation at 2, 6, 12 and 24 hours; time first request of a patient for rescue analgesia; intraoperative anesthetics and opioids consumption; awakening time; perioperative complications.