Effect of Cervical Collar on Intracranial Pressure

Conditions:   Optic Nerve Sheath Diameter;   Ultrasonography
Interventions:   Device: Ambu Perfect ACE;   Device: Philly One-Peace Collar;   Device: Necloc Collar;   Device: NexSplit Plus;   Device: NECKLITE
Sponsors:   Lazarski University;   Wroclaw Medical University;   The Cleveland Clinic
Recruiting

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