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

8 minutes.

2 minutes

20 minutes

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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Correct Answer is D

Explanation

A. Encourage the client to use his right hand when feeding himself: This would be inappropriate since the patient likely has impaired vision in the left field.
B. Provide a nonskid mat to alleviate plate movement: This may be helpful for safety, but it does not address the visual deficit.
C. Encourage the use of wide grip utensils: This may assist with fine motor skills but doesn't directly help with vision problems.
D. Remind the client to look for food on the left side of the tray: This is important because homonymous hemianopsia affects one visual field, and the nurse should encourage the patient to scan their environment to locate food.

A. The BP must be lower than 130/70 mm Hg to receive fibrinolytic agents. B. Elevated BPs are expected after a stroke, and drug therapy should be initiated. C. A lower BP is a protective response to maintain cerebral perfusion. D. Drugs to lower BP are recommended if the BP is 220/120 mm Hg or higher

Correct Answer is D

Explanation

A. The BP must be lower than 180/105 mm Hg to receive fibrinolytic agents, not 130/70 mm Hg.
B. Elevated BPs are common immediately after a stroke, but drug therapy to lower BP is not initiated unless it reaches high levels (typically > 220/120 mm Hg).
C. A lower BP does not act as a protective response; maintaining a higher BP can be necessary initially after a stroke to ensure adequate cerebral perfusion.

D. If BP is 220/120 mm Hg or higher after ischemic stroke, aggressive antihypertensive therapy is initiated to reduce the risk of hemorrhagic transformation and other complications.

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

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse caring for a client who had a right-sided stroke and is exhibiting homonymous hemianopsia when eating. Which of the following actions should the nurse take?

Correct Answer is D

Explanation

Which statement is accurate about the recommendations for BP management after an ischemic stroke?

Correct Answer is D

Explanation

After performing an assessment of the oculocephalic reflex, the nurse suspects that the patient has an intracranial lesion. Which patient behavior supports the nurse's assessment findings?

A nurse is instructing a client's family members about feeding safety for a client who has dysphagia following a stroke. Which of the following instructions should the nurse include?

A nurse at a rehabilitation center is planning care for a client who had a left hemispheric cerebrovascular accident (CVA) 3 weeks ago. Which of the following goals should the nurse include in the client's rehabilitation program?

A nurse is caring for a client who has a traumatic brain injury. Which of the following findings should the nurse identify as an indication of increased intracranial pressure (ICP)?

Which outcome would concern the nurse when the patient's calculated mean arterial pressure (MAP) is below 70 mm Hg?

Which medical condition places a patient at a higher risk for an embolic stroke?

Which interventions would the nurse include in the plan of care for a patient with a diagnosis of bacterial meningitis?

After receiving pre procedural instructions, which patient statement demonstrates an understanding of a scheduled ventriculostomy?