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. Shivering is a common response to cold therapy (such as a hypothermia blanket) as the body attempts to maintain its core temperature. This can increase metabolic demands and oxygen consumption, which should be closely monitored.
B. Seizures are not typically associated with the use of hypothermia blankets unless there are underlying conditions that predispose to them.
C. Dehydration could occur with any prolonged therapy but is not the immediate concern with hypothermia blankets.
D. Burns are rare but could occur if the hypothermia blanket is not properly managed. Shivering is a more immediate concern.

A. Unable to discriminate words and letters B. Deficits in the right visual field C. Motor retardation D. Poor impulse control

Correct Answer is D

Explanation

A. Unable to discriminate words and letters is associated with left hemisphere damage, which is more linked to language and communication deficits.
B. Deficits in the right visual field would typically occur with left hemisphere damage, which affects vision.
C. Motor retardation is more often associated with left hemisphere damage affecting motor control.
D. Right cerebral hemisphere damage often results in behavioral changes, such as poor impulse control, lack of awareness of deficits (anosognosia), and changes in emotional responses.

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

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Naxlex Comprehensive Predictor Exams

A nurse is caring for a client who has meningitis, a temperature of 39.7° C (103.5° F), and is prescribed a hypothermia blanket. While using this therapy, the nurse should know that the client must carefully be observed for which of the following complications?

Correct Answer is A

Explanation

A nurse is caring for a client who had a stroke involving the right cerebral hemisphere. The nurse should monitor for which of the following findings?

Correct Answer is D

Explanation

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

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

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?

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

Which condition would the nurse associate with an infection of a sebaceous gland when the patient presents with a small, white, superficial nodule on the margin of the eyelid?

Which term would the nurse use to document a patient who is comatose from a head injury and display flexion of the arms, wrists, and fingers, as well as adduction of the upper extremities?

A nurse is caring for a client who has aphasia following a stroke. A family member asks the nurse how she should communicate with the client. Which of the following responses by the nurse is appropriate?