This is randomized, controlled and blinded study was performed in minor head trauma patients. Two sonographers measured optic nerve sheath diameters (ONSD) of each subjects' eyes separately for different time points. Then a mean ONSD was calculated for before c-collar placement (T0), 5 and 20 minutes in supine position.
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Sonographic Evaluation of Cervical Collar Effects on the Optic Nerve Sheath Diameter in Head Trauma Patients
Timeframe: 20 minutes