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 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.

A. 80 mm Hg B. 20 mm Hg C. 40 mm Hg D. 60 mm HG

Correct Answer is A

Explanation

A. Cerebral perfusion pressure (CPP) is crucial for maintaining adequate blood flow to the brain. A CPP of 80 mm Hg is typically considered the lower limit for preserving cerebral perfusion, particularly in patients with elevated ICP.
B. 20 mm Hg is too low and would indicate inadequate perfusion, which could result in brain ischemia.
C. 40 mm Hg is too low for optimal cerebral perfusion in critically ill patients with elevated ICP.
D. 60 mm Hg is also too low for optimal cerebral perfusion in critically ill patients with elevated ICP.

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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

An RN is teaching a student nurse about tissue plasminogen activator (tPA) administration in a patient with ischemic stroke. Which statement made by the student nurse indicates a need for further teaching?

Correct Answer is A

Explanation

To preserve cerebral perfusion of a patient with an elevated intracranial pressure (ICP), which cerebral perfusion pressure (CPP) would the nurse maintain when suctioning the patient?

Correct Answer is A

Explanation

Which visual disorder would the nurse associate with the patient's clinical manifestations of itching, irritation, intolerance of light, and crusty debris of the lid margins and lashes?

A nurse is taking care of a client who has sustained a neurologic injury with increased intracranial pressure and decreased cerebral perfusion. Which of the following will keep cerebral perfusion pressure constant?

A nurse is caring for a client who has increased intracranial pressure. Which of the following interventions should the nurse plan to include in the plan of care? (Select All that Apply.)

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

A nurse observes a patient whose right eye is fixed and dilated, for which cranial nerve (CN) would the nurse suspect nerve compression?

Which are would be a priority of care for a patient who is being admitted to the hospital and its demonstrating signs of delirium?

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?