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Questions and Answers
What is the effect of hyperventilation on cerebral blood flow (CBF)?
What is the effect of hyperventilation on cerebral blood flow (CBF)?
- Hyperventilation increases CBF
- Hyperventilation has no effect on CBF
- A 1 mmHg change in PaCO2 is associated with a 3 percent change in CBF (correct)
- Hyperventilation decreases CBF
When should therapeutic hyperventilation be considered as an urgent intervention?
When should therapeutic hyperventilation be considered as an urgent intervention?
- When there is no elevated ICP
- When there is a chronic cause of increased ICP
- When the patient has a traumatic brain injury or acute stroke
- When elevated ICP complicates cerebral edema, intracranial hemorrhage, and tumor (correct)
Why should hyperventilation be minimized in patients with traumatic brain injury or acute stroke?
Why should hyperventilation be minimized in patients with traumatic brain injury or acute stroke?
- Vasoconstriction may cause a critical decrease in local cerebral perfusion and worsen neurologic injury (correct)
- Hyperventilation has a long-lasting effect on patients with traumatic brain injury or acute stroke
- Hyperventilation has no effect on patients with traumatic brain injury or acute stroke
- Hyperventilation increases cerebral perfusion and improves neurologic injury
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