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 B
Explanation
A. Using child-like statements may be demeaning and does not support effective communication. It is
important to speak at the client’s level and provide respect.
B. Incorporating nonverbal cues, such as gestures, facial expressions, and pictures, can help facilitate understanding and communication with a person who has aphasia.
C. Using a higher-pitched tone of voice does not aid comprehension and may be perceived as patronizing.
D. Asking multiple-choice questions is helpful, but it is not the most general approach. Using clear, simple language with nonverbal cues is more beneficial.
Correct Answer is A
Explanation
A. tPA (tissue plasminogen activator) should be administered within 3 to 4.5 hours of the onset of ischemic stroke symptoms, not 12 hours. Administering it after this window increases the risk of complications such as bleeding.
B. tPA is administered by intraarterial infusion is true, but it refers to a specific technique for certain stroke types.
C. tPA is administered IV is correct for intravenous administration in many cases of ischemic stroke.
D. tPA requires BP monitoring during and 24 hrs after the treatment is accurate as blood pressure control is critical when administering tPA.
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