Ultrasound-measured optic nerve sheath diameter correlates well with cerebrospinal fluid pressure

摘要

Background: Intracranial pressure (ICP) can be raised in many neurological conditions and must be treated early to prevent poor clinical outcomes. To detect the rising ICP, it is important to measure it repeatedly using a tool that is noninvasive, safe, accurate, and portable with minimal inter-and intraobserver variability. The aim of our study was to correlate cerebrospinal fluid (CSF) pressure with ultrasound (US)-measured optic nerve sheath diameter (ONSD) and find out a measurement which correlates best with CSF pressure of > 20 cm of water.