Bedside measurement of the optic nerve sheath diameterwith ultrasound in cerebrovascular disorders

Yüzbaşıoğlu, Yucel; Yüzbaşioğlu, Sema; Coskun, Selcuk; İçme, Ferhat; Öz, Tolga; Kunt, Refik; Becel, Sinan; Akçay, Emine; Kavakli, Havva Sahin

doi:10.3906/sag-1707-207

Cited by 10 publications

(6 citation statements)

References 30 publications

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“…Its undue advantage among the other imaging techniques is due to its easy and wide availability, real time assessment, portable and non-invasive nature. 8 Ultrasound is often considered underutilized application with however a very wide potential in critical care including ocular pathology. 3 Studies have demonstrated utility of ultrasound in patients with traumatic brain injury as well as in non-traumatic abnormalities.…”

Section: Discussionmentioning

confidence: 99%

Intra and Interobserver Variability in the B-mode Transorbital Sonographic Measurement of the Optic Nerve Sheath Diameter in Healthy Nepalese Individuals

Ghimire

Chand²,

Mahat

et al. 2019

Nep J Radiology

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Introduction:Ocular ultrasound has gained importance as a non-invasive imaging technique in the screening, diagnosis and treatment management of intracranial hypertension. The aim of our study was to estimate the intra and interobserver variability on B-mode ocular ultrasound measurement of optic nerve sheath diameter (ONSD).Methods: ONSD of the right eye was measured by ultrasound examination among 120 healthy adult volunteers. The ONSD was assessed 3 mm behind the globe and two serial measurements were taken by two observers who were blinded to each other's findings.Results: Age of the volunteers ranged from 18 to 27 years with a mean age of 23.07 +/-SD of 2.486. The mean of ONSDs of two observers was 4.168 +/-SD of 0.54 mm. The intraclass correlation coefficient for first and second observers was 0.997 and 0.978 respectively at 95% confidence interval. The interobserver intraclass correlation coefficient was 0.977 at 95% confidence interval. No correlation of age and gender was noted with ONSD.Conclusions: B-mode transorbital ultrasound measurement of ONSD is highly reproducible with significant intra-observer and inter-observer agreement. Ultrasound measurement of ONSD measurements can serve as indispensable tool in critical care.

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Section: Discussionmentioning

confidence: 99%

Intra and Interobserver Variability in the B-mode Transorbital Sonographic Measurement of the Optic Nerve Sheath Diameter in Healthy Nepalese Individuals

Ghimire

Chand²,

Mahat

et al. 2019

Nep J Radiology

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“…In the study of Komut et al 12 , a significant difference in the mean ONSD between patients with stroke (5.4 mm) and the control group (4.1 mm) was observed. Similarly, Yüzbasıoğlu et al 13 reported a significant difference in the mean ONSD between stroke patients (5.6 mm) and the control group (3.6 mm). In this study, the mean ONSD in the TIA group was determined to be 5.03±0.20 mm.…”

Section: Discussionmentioning

confidence: 81%

Measurement of optic nerve sheath diameter on computed tomography for the differentiation of transient ischemic attacks

Kavak,

Koca

et al. 2024

Rev. Assoc. Med. Bras.

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SUMMARY OBJECTIVE: The objective of this study was to investigate whether the measurement of mean optic nerve sheath diameter in patients with transient ischemic attack could be used to distinguish between control groups, the acute ischemic stroke group, and subgroups within the acute ischemic stroke category. METHODS: Retrospectively, the mean optic nerve sheath diameters of patients aged 18 years and older belonging to control, transient ischemic attack, acute ischemic stroke, and subgroups within the acute ischemic stroke category were measured with initial computed tomography conducted in the emergency department. RESULTS: Out of the 773 patients included in the study, 318 (41.1%) were in the control group, 77 (10%) had transient ischemic attack, and 378 (49%) were categorized as stroke patients. The average mean optic nerve sheath diameter was significantly higher in both the stroke and transient ischemic attack groups compared with the control group (p<0.001 for both comparisons). Furthermore, the mean optic nerve sheath diameter in the stroke subgroups was significantly higher than in both the transient ischemic attack and control groups (p<0.001 for all comparisons). In transient ischemic attack patients, the mean optic nerve sheath diameter showed a significant ability to predict transient ischemic attack (AUC=0.913, p<0.001), with a calculated optimal cutoff value of 4.72, sensitivity of 94.8%, and specificity of 73.9%. CONCLUSION: The mean optic nerve sheath diameter of patients in the transient ischemic attack group was lower compared with those in the stroke subgroups but higher compared with the control group.

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“…Such difference was found to be significant [4]. Yuzbasioglu et al [18] found the mean ONST diameter to be 5.6 mm for stroke patients; this value was 3.6 mm for the control group. This difference was found to be significant.…”

Section: Discussionmentioning

confidence: 89%

Prognostic value of the optic nerve sheath thickness as an indicator of intracranial pressure among acute stroke patients

Çelik

Çolak

Tekten

2020

j-ebr

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To evaluate the clinical value of optic nerve sheath thickness (ONST) in stroke patients. Method: The present study was prospectively performed on 386 stroke patients who were admitted to Emergency Department, and 75 healthy volunteers of similar age and gender groups. The following criteria were evaluated for each patient: age, gender, comorbidities, neurological deficit levels [Glasgow Coma Scale (GCS), the National Institute of Health Sciences Scale (NIHSS)], tomography findings (hemorrhagic / ischemic), ONST diameter in ultrasound scan, hospitalization and mortality rates. Results: The median ONST value was 5.5 mm (IQR: 0.30) for the hemorrhagic stroke patients, and 5.25 mm (IQR: 0.20) for the ischemic stroke patients. The median ONST value of the stroke patients was significantly higher. Also, the ONST values of the hemorrhagic stroke patients were found to be significantly higher. In our study, the area below the curve was 0.865. For the 4.5 mm cut-off value, the sensitivity was 96.1% and specificity was 82.7%. Conclusions:The results of our study showed that the ONST increased in the stroke patients and this increase was higher in the hemorrhagic stroke patients. We suggest that the treatment can be considered to decrease intracranial pressure if there is an increase in ONST in stroke patients.

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Bedside measurement of the optic nerve sheath diameterwith ultrasound in cerebrovascular disorders

Cited by 10 publications

References 30 publications

Intra and Interobserver Variability in the B-mode Transorbital Sonographic Measurement of the Optic Nerve Sheath Diameter in Healthy Nepalese Individuals

Intra and Interobserver Variability in the B-mode Transorbital Sonographic Measurement of the Optic Nerve Sheath Diameter in Healthy Nepalese Individuals

Measurement of optic nerve sheath diameter on computed tomography for the differentiation of transient ischemic attacks

Prognostic value of the optic nerve sheath thickness as an indicator of intracranial pressure among acute stroke patients

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