Optic nerve sheath diameter (ONSD) in sovratentorial brain tumor surgery: an option for non invasive raised ICP detection and management. Preliminary results and feasibility assessment

2017 ◽  
Author(s):  
Raffaele Aspide
Keyword(s):  
Brain Tumor ◽  
Optic Nerve ◽  
Optic Nerve Sheath Diameter ◽  
Optic Nerve Sheath ◽  
Tumor Surgery ◽  
Brain Tumor Surgery ◽  
Preliminary Results ◽  
Feasibility Assessment ◽  
Non Invasive ◽  
Nerve Sheath

scholarly journals Study of Optic Nerve Sheath Diameter in Normal Nepalese Adults Using Ultrasound

2018 ◽  
Vol 3 (1) ◽  
pp. 357-360 ◽  
Author(s):  
Bidur KC ◽  
Amit Thapa
Keyword(s):  
Optic Nerve ◽  
Optic Nerve Sheath Diameter ◽  
Cross Sectional Study ◽  
Optic Nerve Sheath ◽  
P Value ◽  
Cross Sectional ◽  
Non Invasive ◽  
Normal Limits ◽  
Nerve Sheath ◽  
Significant Difference

Introduction: Though invasive intracranial devices are gold standard to calculate intracranial pressure (ICP); these are not without any complications. Non-invasive measurement of ICP by Ultrasonography could be a safe and portable technique.Objectives: The objective of the study was to measure and compare values of optic nerve sheath diameter of both eyes in healthy Nepalese adults.Methodology: A prospective cross-sectional study of healthy adult Nepalese volunteers was performed using a 7.5 MHz linear Ultrasound probe on the closed eyelids; optic nerve sheath diameter (ONSD) was measured 3 mm behind the globe in each eye.Results: Optic nerve sheath diameter (ONSD) of both eyes was measured in 100 healthy volunteers of age ranged from 15 to 75 years with a mean of 30.21 ± 14.05 years. There were 18 (18%) male and 82 (82%) female. ONSD for right eye ranged from 3.20 to 4.90 mm with mean of 4.10 ± 0.50 mm and left eye from 3.20 to 4.80 mm with mean of 4.22 ± 0.49 mm. P value for right and left eye ONSD (P = 0.06) and male and female (P = 0.12 and 0.85 for right and left ONSD respectively) were within normal limits. ONSD has no correlation with age (P = 0.27 and 0.27 for right and left ONSD respectively).Conclusion Mean of optic nerve sheath diameter (ONSD) is 4.10mm and 4.22 mm for right and left eye respectively. There is no statistical significant difference in mean of ONSD between right and left eye. BJHS 2018;3(1)5 : 357-360

scholarly journals Optic Nerve Sheath Diameter Assessment Used As a Non-Invasive Tool To Dynamically Monitor Intracranial Pressure

2021 ◽  
Author(s):  
Guo-Biao Wu ◽  
Jun Tian ◽  
Xiao-Bing Liu ◽  
Zhi-Yong Wang ◽  
Jian-Ying Guo
Keyword(s):  
Optic Nerve ◽  
Intracranial Pressure ◽  
Supine Position ◽  
Dynamic Test ◽  
Optic Nerve Sheath Diameter ◽  
Optic Nerve Sheath ◽  
Strongly Correlated ◽  
Non Invasive ◽  
Nerve Sheath ◽  
Good Agreement

Abstract Objective: This study aimed to detect whether optic nerve sheath diameter (ONSD) can be used to dynamically monitor intracranial pressure (ICP). Methods: Adult patients being monitored for invasive ICP on day one after hospital admission were included. For each patient, ONSD was first measured in the supine position, then at the 30° head-up position. The dynamic test was conducted in 16 patients. The ONSD was measured in the supine position once a day for three continuous days (day one to day three after admission).Results: The ONSD and ICP values obtained in the supine position on admission were strongly correlated (r of 0.799). When patients changed their position from supine to the 30° head-up position, the ICP and ONSD values decreased correspondingly. However, the change in ICP did not correlate well with the change in ONSD (r of 0.358). In the dynamic test, a good agreement between ICP and ONSD only existed in three (18.75%) patients. In addition, three patients had completely different profiles for ICP and ONSD.Conclusions: The results suggest that the changes in ONSD and ICP values were not correlated well after dynamic observation. Measurement of ONSD may not be a suitable tool to dynamically monitor ICP.

scholarly journals Ultrasonic Assessment of Optic Nerve Sheath Diameter in Patients at Risk of Sepsis-Associated Brain Dysfunction: A Preliminary Report

2020 ◽  
Vol 17 (10) ◽  
pp. 3656 ◽  
Author(s):  
Piotr F. Czempik ◽  
Jakub Gąsiorek ◽  
Aleksandra Bąk ◽  
Łukasz J. Krzych
Keyword(s):  
Optic Nerve ◽  
Sequential Organ Failure Assessment ◽  
Organ Failure ◽  
Optic Nerve Sheath Diameter ◽  
Brain Dysfunction ◽  
Optic Nerve Sheath ◽  
Non Invasive ◽  
Nerve Sheath ◽  
Failure Assessment

Sepsis-associated brain dysfunction (SABD) with increased intracranial pressure (ICP) is a complex pathology that can lead to unfavorable outcome. Ultrasonographic measurement of optic nerve sheath diameter (ONSD) is used for non-invasive assessment of ICP. We aimed to assess the role of ONSD as a SABD screening tool. This prospective preliminary study covered 10 septic shock patients (5 men; aged 65, IQR 50–78 years). ONSD was measured bilaterally from day 1 to 10 (n = 1), until discharge (n = 3) or death (n = 6). The upper limit for ONSD was set at 5.7 mm. Sequential organ failure assessment score was calculated on a daily basis as a surrogate formulti-organ failure due to sepsis in the study population. On day 1, the medians of right and left ONSD were 5.56 (IQR 5.35–6.30) mm and 5.68 (IQR 5.50–6.10) mm, respectively, and four subjects had bilaterally elevated ONSD. Forty-nine out of 80 total measurements performed (61%) exceeded 5.7 mm during the study period. We found no correlations between ONSD and sequential organ failure assessment (SOFA) during the study period (right: R = −0.13–0.63; left R = −0.24–0.63). ONSD measurement should be applied for screening of SABD cautiously. Further research is needed to investigate the exact role of this non-invasive method in the assessment of brain dysfunction in these patients.

Optic nerve sheath diameter measured sonographically as non-invasive estimator of intracranial pressure: a systematic review and meta-analysis

2018 ◽  
Vol 44 (8) ◽  
pp. 1284-1294 ◽  
Author(s):  
Chiara Robba ◽  
Gregorio Santori ◽  
Marek Czosnyka ◽  
Francesco Corradi ◽  
Nicola Bragazzi ◽  
...  
Keyword(s):  
Systematic Review ◽  
Optic Nerve ◽  
Intracranial Pressure ◽  
Meta Analysis ◽  
Optic Nerve Sheath Diameter ◽  
Optic Nerve Sheath ◽  
Non Invasive ◽  
Nerve Sheath
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