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Observational Study
Transorbital ultra-sonographic measurement of optic nerve sheath diameter for intracranial midline shift in patients with head trauma.
- Hizir Kazdal, Ayhan Kanat, Huseyin Findik, Ahmet Sen, Bulent Ozdemir, Osman Ersegun Batcik, Ozcan Yavasi, and Mehmet Fatih Inecikli.
- Department of Anesthesiology and Reanimation, Recep Tayyip Erdogan University, Rize, Turkey.
- World Neurosurg. 2016 Jan 1; 85: 292-7.
ObjectiveMeasurement of the optic nerve sheath diameter (ONSD) by using sonography is a straightforward, noninvasive technique to detect an increased intracranial pressure, which can even be conducted at the bedside. However, the correlation between ONSD and intracranial midline shift has not been studied.MethodsThe authors performed a prospective, blinded observational study in an intensive care unit. Forty-five patients were divided into groups. Of those, 19 patients had a midline shift, whereas 26 had no intracranial pathology or shift and served as control individuals.ResultsSpearman rank correlation coefficient of difference of ONSD and midline shift was 0.761 (P < 0.0005), demonstrating a significant positive correlation between patients with midline shift and control group.ConclusionsDespite small numbers and selection bias, this study suggests that bedside ultrasound may be useful in the diagnosis of midline intracranial shift by measurement of ONSD.Copyright © 2016 Elsevier Inc. All rights reserved.
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