RESUMO
OBJECTIVE: In this study, it was aimed to evaluate whether spinal immobilization at 20°, instead of the traditional 0°, affects intracranial pressure (ICP) via the ultrasonographic (USG) measurement of optic nerve sheath diameter (ONSD). METHODS: 140 healthy, adult, non-smoking volunteers who had no acute or chronic diseases were included this study. Volunteers were randomly divided into two groups; performed spinal immobilization at 0° (Group 1) and at 20° (Group 2). After spinal immobilization (at 0 or 20°), measurements of ONSD were performed at 0, 30, and 60â¯min in an immobilized position. RESULTS: When evaluating the change in ONSD over time (at 30 and 60â¯min) as compared to basal measurements at 0â¯min, it was found that the ONSD values of both sides (the right and left eyes) were significantly increased in Group 1 and Group 2. For Groups 1 and 2, these differences existed both between 0 and 30â¯min and between 30 and 60â¯min. In addition, in this study, the amounts of increase in the ONSD measurements from 0 to 30â¯min and from 30 to 60â¯min (ΔONSD0-30â¯min and ΔONSD30-60â¯min) in both groups were compared. The results showed that there was no significant difference between Group 1 and Group 2 in terms of ΔONSD measurements. CONCLUSIONS: Spinal immobilization at 0° as a part of routine trauma management increased ONSD and thus ICP. Secondly, we found that similar to immobilization at 0°, spinal immobilization at 20° increased ONSD.
