Derivative indices of optic nerve sheath diameter: a novel ultrasound-based approach for non-invasive intracranial pressure monitoring in neurocritical patients
Background Preoperative intracranial pressure (ICP) evaluation in neurocritical patients relies on computed tomography (CT) findings, which often lack accuracy. Ultrasound-measured optic nerve sheath diameter (ONSD) offers a non-invasive alternative, but optimal measurement protocols and indices remain controversial. M...