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Updated: Jul 25, 2025

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Optic Nerve Sheath Point of Care Ultrasound: Image Acquisition
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Reply: Optic Nerve Sheath Diameter in Hyponatremia: A Closer Look
Upendra Hansda1, Ijas Muhammed Shaji1, Sanjeed Uttanganakam1
1Department of Trauma and Emergency, All India Institute of Medical Sciences, Bhubaneswar, Odisha, India.
Summary
This study examines the optic nerve sheath diameter in patients with hyponatremia. Findings suggest that optic nerve sheath diameter measurements may offer valuable insights into the condition.
Area of Science:
- Ophthalmology
- Neurology
- Critical Care Medicine
Background:
- Hyponatremia, a condition of low sodium levels, can present with neurological symptoms.
- Optic nerve sheath diameter (ONSD) is increasingly used as a non-invasive marker for intracranial pressure.
Purpose of the Study:
- To investigate the relationship between hyponatremia and ONSD.
- To determine if ONSD can serve as a diagnostic or prognostic indicator in hyponatremia.
Main Methods:
- Retrospective analysis of patients with hyponatremia.
- Measurement of ONSD using ultrasonography.
- Correlation of ONSD with clinical parameters and serum sodium levels.
Main Results:
- A significant correlation was observed between the severity of hyponatremia and ONSD.
- Elevated ONSD was noted in patients with symptomatic hyponatremia.
Conclusions:
- ONSD measurement is a potentially useful tool for assessing neurological involvement in hyponatremia.
- Further research is warranted to establish ONSD as a standard diagnostic parameter in hyponatremia.
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