The patient was an unrestrained front-seat passenger in a motor vehicle crash and struck his forehead on the inside of the windshield. Diagnostic testing in the emergency department reveals coup–contrecoup injury
The nurse identifies which area as the contrecoup injury? 1. The frontal area of the brain
2. The posterior or occipital part of the brain
3. Both the anterior and posterior areas of the brain
4. The midpoint of the brainstem
2
Rationale 1: The frontal area is the coup injury.
Rationale 2: The area directly opposite the original injury is where the contrecoup injury occurs.
Rationale 3: Only one of these areas is described as sustaining contrecoup injury.
Rationale 4: The brainstem may be injured due to shearing forces, but it would not be included in the coup-contrecoup designation.
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