scholarly journals The measurement of ultrasonographic optic nerve sheath diameter in patients with hyperglycemia

2019 ◽  
pp. 102490791989216
Author(s):  
Eda Donertas ◽  
Nalan Kozaci ◽  
Mustafa Avci
Keyword(s):  
Diabetes Mellitus ◽  
Optic Nerve ◽  
Optic Nerve Sheath Diameter ◽  
Healthy Adults ◽  
Optic Nerve Sheath ◽  
Diabetic Patients ◽  
Complications Of Diabetes ◽  
Nerve Sheath ◽  
Group 2 ◽  
Group 1

Background: Diabetes mellitus is a disease associated with several complications in its acute and chronic stages. Objective: The aim of the study was to determine the treatment-associated changes in optic nerve sheath diameter in patients admitted to the emergency department due to one of the acute hyperglycemic complications of diabetes mellitus. Materials and method: Diabetic patients with serum glucose levels of 250 mg/dL or higher were included in the study. Healthy volunteers were included in the control group. Optic nerve sheath diameter was measured at 0th hour and at the end of the second hour. Blood samples were collected simultaneously with optic nerve sheath diameter measurements. Results: The study included 100 individuals. Group 1 included 50 patients and Group 2 included 50 healthy adults. Optic nerve sheath diameter was 4.5 ± 0.4 mm in Group 1 and 4.4 ± 0.5 mm in Group 2 in 0th hour, and no statistical difference was found between the groups (p = 0.162). In Group 1, optic nerve sheath diameter increased 0.6 ± 0.4 mm after the treatment. Of the patients in Group 1, 22 (44%) patients with diabetic ketoacidosis or hyperosmolar hyperglycemic state were assigned to Group 1A and 28 (56%) patients with isolated hyperglycemia were assigned to Group 1B. There was not a difference between the pre- and post-treatment optic nerve sheath diameter values of the patients in Group 1A and Group 1B. Optic nerve sheath diameter was observed to enlarge after treatment. The difference in optic nerve sheath diameter was 0.6 ± 0.4 mm in Group 1A and 0.5 ± 0.4 mm in Group 1B (p = 0.294). Conclusion: Pre-treatment optic nerve sheath diameter values of the patients who were diagnosed with one of the acute hyperglycemic complications of diabetes mellitus are not different from healthy adults. Furthermore, optic nerve sheath diameter values do not change with the severity of the disease. However, optic nerve sheath diameter values change with treatment. For this reason, optic nerve sheath diameter can be used to following the development of brain edema.

High-resolution MRI assessment of optic nerve sheath diameter in adults: optic nerve sheath variation and a new diagnostic tool for intracranial hypertension

2020 ◽  
pp. 028418512096671
Author(s):  
Ying-mei Zheng ◽  
Da-peng Hao ◽  
Guo-zhang Tang ◽  
Rui-zhi Zhou ◽  
Jing Pang ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Optic Nerve ◽  
High Resolution ◽  
Intracranial Hypertension ◽  
Body Mass ◽  
Optic Nerve Sheath Diameter ◽  
Healthy Adults ◽  
Optic Nerve Sheath ◽  
Nerve Sheath ◽  
High Resolution Mri

Background Assessment of optic nerve sheath diameter (ONSD) is a non-invasive measure of intracranial pressure (ICP). However, it is not clear whether healthy individuals exhibit ONSD variation or whether factors other than ICP affect the ONSD. Purpose To investigate whether ONSD was correlated with age, sex, height, weight, eyeball transverse diameter (ETD), or body mass index (BMI), and to develop a new diagnostic model to increase the diagnostic accuracy of intracranial hypertension (IH). Material and Methods A total of 145 relatively healthy adults and 40 patients with acute IH who underwent high-resolution magnetic resonance imaging (MRI) were enrolled in this study. Linear regression analyses were used to determine the relationship between ONSD and these variables. If correlations were identified, an index ONSDΔ removing variables effects was calculated. ROC analysis was used to assess the IH predictive value of ONSDΔ in terms of sensitivity and specificity. Results In relatively healthy adults, there was a correlation between ONSD and BMI ( P = 0.002), which can be presented as an index ONSDΔ. The ONSDΔ model better predicted IH than the ONSD model ( P = 0.035), with a sensitivity of 70.00%, a specificity of 71.72%, and an AUC of 0.755. Conclusion A correlation between ONSD and body mass index (BMI) was found using high-resolution MRI. This result indicates that the effects of BMI should be considered along with the ONSD during ICP monitoring. Meanwhile, the index ONSDΔ was better than the ONSD in predicting IH and could be used to obtain a more precise estimation of ICP.

scholarly journals The Measurement of Elderly Volunteers’ Optic Nerve Sheath Diameters by Ocular Ultrasonography

Medicina ◽  
2019 ◽  
Vol 55 (8) ◽  
pp. 413 ◽  
Author(s):  
Mustafa Avci ◽  
Nalan Kozaci ◽  
Erdal Komut ◽  
Seval Komut ◽  
Gulsum Caliskan ◽  
...  
Keyword(s):  
Optic Nerve ◽  
Intracranial Pressure ◽  
Age Groups ◽  
Optic Nerve Sheath ◽  
Healthy Population ◽  
Nerve Sheath ◽  
Group 3 ◽  
Left And Right ◽  
Group 2 ◽  
Group 1

Background and objectives: The optic nerve is a component of the central nervous system, and the optic nerve sheath is connected to the subarachnoid space. For this reason, intracranial pressure (ICP) increases are directly transmitted to the optic nerve sheath. Knowing the normal optic nerve sheath diameter (ONSD) range in a healthy population is necessary to interpret this measurement as a sign of intracranial pressure in clinical practice and research. In this study, we aimed to determine the standard ONSD value in healthy adultsaged65 years of age or older who had not previously been diagnosed with a disease that could increase the ICP. Materials and Methods: The right and left ONSD values and ONSD differences were compared, according to the gender of the patients. The patients were divided into 3 groups, according to their age. The age groups were assigned as follows: Group 1: 65–74 years of age; Group 2: 75–84 years of age; and Group 3: 85 years of age or older. The ONSDs and the ONSD difference between the left and right eyes of Group 1, Group 2 and Group 3 were compared. Results: The study included 195 volunteers. The mean ONSD of both eyes was 4.16±0.69 mm, and the difference between the ONSD of the left and right eyes was 0.16±0.18 mm. There was no difference between genders in terms of right ONSD, left ONSD, mean ONSD and ONSD difference between the left and right eyes. There was no correlation between age and ONSD and ONSD difference. When the age groups and ONSD were compared, no difference was found between the groups. Conclusions: In conclusion, the ONSDs of both eyes do not vary with age in healthy adults aged65 years or older. ONSD does not vary between genders. The calculation of ONSD difference can be used to determine ICP increase.

Placement of a cervical collar increases the optic nerve sheath diameter in healthy adults

2018 ◽  
Vol 36 (3) ◽  
pp. 430-434 ◽  
Author(s):  
Casey M. Woster ◽  
Michael D. Zwank ◽  
Joseph R. Pasquarella ◽  
Sandi S. Wewerka ◽  
Jeffrey P. Anderson ◽  
...  
Keyword(s):  
Optic Nerve ◽  
Optic Nerve Sheath Diameter ◽  
Healthy Adults ◽  
Cervical Collar ◽  
Optic Nerve Sheath ◽  
Nerve Sheath
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