If blood flow to the brain is interrupted, how quickly does cellular death occur?
8 minutes.
2 minutes
20 minutes
5 minutes
The Correct Answer is B
B. Brain cells begin to die within 2 minutes if blood flow is interrupted, which is why rapid intervention is crucial during a stroke or other conditions that block cerebral blood flow.
A. 8 minutes is too long for brain cells to survive without oxygen.
C. 20 minutes is too long for brain cells to survive without oxygen.
D. 5 minutes is too long for brain cells to survive without oxygen.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Avoid friction over scaly lesions while bathing is generally good advice, but it is not the primary focus in this situation.
B. Eliminate the use of products containing salicylic acid is not necessary unless the client has a known sensitivity or reaction to it, as salicylic acid is commonly used to treat psoriasis.
C. Maintain occlusive dressings on the lesions throughout the day and remove them at bedtime is not typically recommended for psoriasis, as it can exacerbate the condition or increase irritation. Topical treatments, if prescribed, should be used as directed.
D. Psoriasis is often exacerbated by stress. Therefore, teaching the client effective stress reduction techniques (e.g., meditation, deep breathing, yoga) can help in managing flare-ups.
Correct Answer is ["A","B","D","E"]
Explanation
A. Managing sedation helps prevent agitation and decreases metabolic demands, which can exacerbate ICP.
B. Monitoring volume status is essential to prevent fluid imbalances that can worsen ICP.
C. Completing hourly endotracheal suctioning is not appropriate for this patient. Excessive suctioning can cause increased ICP and should be done cautiously.
D. Ensuring proper ventriculostomy transducer levels is critical for accurate measurement of ICP.
E. Elevating the head of the bed 30° helps improve venous drainage and reduces ICP.
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