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If blood flow to the brain is interrupted, how quickly does cellular death occur?

A.

8 minutes.

B.

2 minutes

C.

20 minutes

D.

5 minutes

Answer and Explanation

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.
 


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Related Questions

Correct Answer is C

Explanation

A. An ICP of 10 mm HG is within normal limits.
B. An ICP of 15 mm HG is within normal limits.
C. An ICP of 20 mm Hg is elevated and should be reported immediately as it can indicate worsening conditions like brain swelling or herniation. Normal ICP is typically 5 to 15 mm Hg.
D. An ICP of 5 mm HG is also normal and would not require immediate reporting.

Correct Answer is C

Explanation

A. "Wear compression stockings daily." is not specifically related to preventing diabetic complications of the eyes and kidneys.
B. "Examine your feet carefully every day." is important for preventing diabetic foot ulcers but is not directly related to preventing retinopathy and nephropathy.
C. Maintaining stable blood glucose levels is the most effective way to prevent complications like retinopathy and nephropathy in clients with diabetes mellitus. Consistently high blood glucose levels can lead to damage to blood vessels in the eyes and kidneys.
D. "Have an eye examination once per year." is important, but maintaining stable blood glucose levels is the most effective long-term prevention strategy.

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