Transorbital Sonographic Monitoring of Optic Nerve Diameter in Patients With Severe Brain Injury

Karakitsos, Dimitrios; Soldatos, Theodoros; Γουλιάμος, Αθανάσιος; Armaganidis, A; Poularas, John; Kalogeromitros, A.; Boletis, J.; Kostakis, A.; Karabinis, Andréas

doi:10.1016/j.transproceed.2006.10.185

Cited by 57 publications

(65 citation statements)

References 25 publications

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“…Grisgin [91] showed that the mean ONSD in patients with signs of brain edema on CT is larger than that of controls. Other authors have shown that with a cut-off of normal ONSD ranging from 5.0 to 5.9 mm, the ONSD predicts findings of increased ICP on CT with a sensitivity of 74-100% and a specificity of 63-95%, as shown in Table 4 [92][93][94][95].…”

Section: Ultrasoundmentioning

confidence: 97%

Non-invasive Methods of Estimating Intracranial Pressure

et al. 2011

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Non-invasive measurement of intracranial pressure can be invaluable in the management of critically ill patients. We performed a comprehensive review of the literature to evaluate the different methods of measuring intracranial pressure. Several methods have been employed to estimate intracranial pressure, including computed tomography, magnetic resonance imaging, transcranial Doppler sonography, near-infrared spectroscopy, and visual-evoked potentials. In addition, multiple techniques of measuring the optic nerve and the optic nerve sheath diameter have been studied. Ultrasound measurements of the optic nerve sheath diameter and Doppler flow are especially promising and may be useful in selected settings.

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Section: Ultrasoundmentioning

confidence: 97%

Non-invasive Methods of Estimating Intracranial Pressure

et al. 2011

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“…They observed a linear relationship between the ICP and the subarachnoid pressure of the optic nerve as recorded through an orbitotomy. Using optic nerve sonography or magnetic resonance imaging, several studies have demonstrated enlarged optic nerve sheaths in children and adults with raised ICP due to various pathologies, and have established that increased ONSD is a sensitive sign of intracranial hypertension 1 2 3 15 16 17 18 19 20 21 22 23 24 25…”

Section: Raised Icp and Optic Nerve Sheath Enlargementmentioning

confidence: 99%

Optic nerve sonography: a new window for the non-invasive evaluation of intracranial pressure in brain injury

Soldatos

Chatzimichail

Papathanasiou

et al. 2009

Emergency Medicine Journal

148

100

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Enlargement of the optic nerve sheath has been described in patients with raised intracranial pressure (ICP), thereby serving as one of its indicators. Optic nerve sonography offers rapid bedside assessment of the optic nerve sheath diameter and has recently been introduced for the non-invasive detection of raised ICP, particularly in patients with severe brain injury. This review explains the pathophysiology of optic nerve sheath enlargement as a result of intracranial hypertension, describes the technique and clinical use of optic nerve sonography, and summarises the studies which have tested this modality in the non-invasive evaluation of ICP.

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“…In our preliminary studies in healthy test subjects, we consistently found both mean and median ONSD to exceed 6.0 mm (Sargsyan et al Unpublished results), significantly higher than results found in previous studies. Furthermore, the use of ONSD values for patient monitoring in critical care settings requires high measurement accuracy to detect subtle changes; the available results have not been promising ( 6 ). High measurement accuracy and standardization is also important for the use of ONSD in patient populations with chronic ICP elevation, such as idiopathic intracranial hypertension.…”

Section: Discussionmentioning

confidence: 99%

Optic Nerve Sheath Diameter Measurement Techniques: Examination Using a Novel Ex-Vivo Porcine Model

Nusbaum¹,

Antonsen²,

Bockhorst³

et al. 2014

aviat space environ med

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This model appears to be a valid test-bed for continued scrutiny of ONSD measurement techniques. In this model, 7T MRI was accurate and potentially useful for in-vivo measurements where direct measurements are not available. Current limitations with ultrasound imaging for ONSD measurement associated with image acquisition technique and equipment necessitate further standardization to improve its clinical utility.

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Transorbital Sonographic Monitoring of Optic Nerve Diameter in Patients With Severe Brain Injury

Cited by 57 publications

References 25 publications

Non-invasive Methods of Estimating Intracranial Pressure

Non-invasive Methods of Estimating Intracranial Pressure

Optic nerve sonography: a new window for the non-invasive evaluation of intracranial pressure in brain injury

Optic Nerve Sheath Diameter Measurement Techniques: Examination Using a Novel Ex-Vivo Porcine Model

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