Estimation of optic nerve sheath diameter on an initial brain computed tomography scan can contribute prognostic information in traumatic brain injury patients

Aurélien Legrand; Patrick Jeanjean; Fanny Delanghe; Johann Peltier; Benoit Lecat; Hervé Dupont

doi:10.1186/cc12589

journal article Open Access Mar 27, 2013

Estimation of optic nerve sheath diameter on an initial brain computed tomography scan can contribute prognostic information in traumatic brain injury patients

Aurélien Legrand Patrick Jeanjean Fanny Delanghe Johann Peltier Benoit Lecat Hervé Dupont

Critical Care Vol. 17 No. 2 · Springer Science and Business Media LLC

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Abstract

Abstract
Introduction
The aim of this study was to evaluate the prognostic value of optic nerve sheath diameter (ONSD) measured on the initial brain computed tomography (CT) scan for intensive care unit (ICU) mortality in severe traumatic brain injury (TBI) patients.

Methods
A prospective observational study of all severe TBI patients admitted to a neurosurgical ICU (over a 10-month period). Demographic and clinical data and brain CT scan results were recorded. ONSD for each eye was measured on the initial CT scan. The group of ICU survivors was compared to non-survivors. Glasgow Outcome Scale (GOS) was evaluated six months after ICU discharge.

Results
Seventy-seven patients were included (age: 43 ± 18; 81% males; mean Injury Severity Score: 35 ± 15; ICU mortality: 28.5% (n = 22)). Mean ONSD on the initial brain CT scan was 7.8 ± 0.1 mm in non-survivors vs. 6.8 ± 0.1 mm in survivors (P < 0.001). The operative value of ONSD was a good predictor of mortality (area under the curve: 0.805). An ONSD cutoff ≥ 7.3 had a sensitivity of 86.4% and a specificity of 74.6% and was independently associated with mortality in this population (adjusted odds ratio 95% confidence interval: 22.7 (3.2 to 159.6), P = 0.002). There was a relationship between initial ONSD values and six-month GOS (P = 0.03).

Conclusions
ONSD measured on the initial brain CT scan is independently associated with ICU mortality rate (when ≥ 7.3 mm) in severe TBI patients.
See related commentary by Masquère et al.,http://ccforum.com/content/17/3/151

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Published: Mar 27, 2013
Vol/Issue: 17(2)
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Cite This Article

Aurélien Legrand, Patrick Jeanjean, Fanny Delanghe, et al. (2013). Estimation of optic nerve sheath diameter on an initial brain computed tomography scan can contribute prognostic information in traumatic brain injury patients. Critical Care, 17(2). https://doi.org/10.1186/cc12589

Estimation of optic nerve sheath diameter on an initial brain computed tomography scan can contribute prognostic information in traumatic brain injury patients

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