Ultrasonographic Measurement of the Optic Nerve Sheath Diameter in the Taiwanese Healthy Volunteers
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: ultrasound.
- Who it may be relevant to
- Registry conditions: Normal Diameter of Optic Nerve. Basic parameters: from 20 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Taiwan
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Official title
Ultrasonographic Measurement of the Optic Nerve Sheath Diameter in the Taiwanese Healthy Volunteers and Its Associating Factors
Overview
The investigators aimed to analyze the ONSD diameters and its associated factors in Taiwanese healthy volunteers. We plan to recruit 150 healthy volunteers aged more than 20 years old. The ONSD and its associated factors will be measured and recorded by ultrasound from September 2020 to August 2021.
Detailed description
Ultrasound measurement of optic nerve sheath diameter (ONSD) had been considered as a non-invasive way to distinguish the presence of elevated intracranial pressure (ICP). Besides detecting elevated ICP in various neurological diseases, ONSD can also be applied to cardiac arrest survivors as one of the prognostic factors. It is a simple, quick, repeatable technique without the need of contrast medians. In order to make precise interpretations, the database of the normal distribution of ONSD and its associated factors in healthy volunteers is necessary. The majority of previous reports are from Western countries, and limited reports of ONSD in the Asian population have high variability.
Therefore, collecting local data of ONSD in Taiwan is important. In this study, the investigators aimed to analyze the ONSD diameters and its associated factors in Taiwanese healthy volunteers. The investigators planed to recruit 150 healthy volunteers aged more than 20 years old. The ONSD and its associated factors will be measured and recorded by ultrasound from September 2020 to August 2021.
Interventions
- Other ultrasound
ultrasound measurement for optic nerve outer diameter
Primary outcome measures
- optic nerve outer diameter [Time frame: 60 days]
Eligibility criteria
Inclusion criteria
adult volunteer aged more than 20 years
Exclusion criteria
aged less than 20 years
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: Yes
Study design
- Observational model
- Case-only
Study locations
Taiwan · 1 center
- Department of Emergency Medicine, National Taiwan University Hospital — Taipei
Identifiers
NCT: NCT04600570 · 202008032RINC