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. The optic nerve sheath is an extension of the dura mater and the subarachnoid space is continuous with the intracranial subarachnoid space. Therefore, non-invasive monitoring of the increase in intracranial pressure (ICP) can be achieved by measuring the optic nerve and sheath diameter with ultrasound. Since ONSD measurement with ultrasound is an easily applicable technique, it is useful in monitoring intracranial pressure changes based on the optic nerve diameter during intraoperative changes