Diagnostic Value of Bedside Ultrasonographic Optic Nerve Sheath Diameter Measurement in Differentiating Ischemic from Hemorrhagic Stroke in the Emergency Department
Description
This dataset contains clinical and ultrasonographic data from a prospective observational study conducted in an adult emergency department. It includes demographic variables, clinical parameters (such as blood pressure, oxygen saturation, and Glasgow Coma Scale), and bedside ocular ultrasonography measurements of the optic nerve sheath diameter (ONSD). The data was collected from 64 patients diagnosed with either ischemic or hemorrhagic stroke via radiological imaging (CT/MRI). The primary aim of this dataset is to evaluate the diagnostic performance and optimal cut-off value of ONSD in differentiating stroke subtypes.
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Steps to reproduce
Step 1: Adult patients presenting to the emergency department with suspected acute stroke were identified and underwent initial radiological imaging (CT/MRI). Step 2: Immediately following the imaging procedure, bedside ocular ultrasonography was performed in the supine position (head elevated 30 degrees) using a high-frequency (4–10 MHz) linear probe. Step 3: The optic nerve sheath diameter (ONSD) was measured transversely from the outer contours, exactly 3 mm posterior to the papilla. Step 4: Three separate measurements were taken for each eye, and the mean ONSD values were calculated and recorded for statistical analysis.