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Questions and Answers
What percentage of total body oxygen consumption is the adult brain responsible for?
What percentage of total body oxygen consumption is the adult brain responsible for?
- 10%
- 20% (correct)
- 30%
- 40%
What is the normal cerebral blood flow (CBF) in mL/100 g/min?
What is the normal cerebral blood flow (CBF) in mL/100 g/min?
- 50 (correct)
- 30
- 40
- 60
How long of global ischemia can potentially cause irreversible injury to the brain?
How long of global ischemia can potentially cause irreversible injury to the brain?
- 6-7 minutes
- 4-5 minutes (correct)
- 8-10 minutes
- 2-3 minutes
What does CPP stand for in the context of neurophysiology?
What does CPP stand for in the context of neurophysiology?
What is the difference between mean arterial pressure (MAP) and either intracranial pressure (ICP) or central venous pressure (CVP) called?
What is the difference between mean arterial pressure (MAP) and either intracranial pressure (ICP) or central venous pressure (CVP) called?
How does the brain regulate blood flow in response to moderate changes in mean arterial pressure (MAP) or cerebral perfusion pressure (CPP)?
How does the brain regulate blood flow in response to moderate changes in mean arterial pressure (MAP) or cerebral perfusion pressure (CPP)?
What is the approximate range for the lower limit of autoregulation (LLA) of cerebral blood flow (CBF)?
What is the approximate range for the lower limit of autoregulation (LLA) of cerebral blood flow (CBF)?
Which phase of autoregulation responds to changes in systolic systemic blood pressure?
Which phase of autoregulation responds to changes in systolic systemic blood pressure?
What happens to cerebral blood flow (CBF) above the upper limit of autoregulation?
What happens to cerebral blood flow (CBF) above the upper limit of autoregulation?
What are the two types of autoregulation identified in the text?
What are the two types of autoregulation identified in the text?
What physiological parameter besides mean arterial pressure (MAP) plays an important role in regulating cerebral blood flow (CBF)?
What physiological parameter besides mean arterial pressure (MAP) plays an important role in regulating cerebral blood flow (CBF)?
What effect does hypercapnia (elevated PaCO2) have on cerebral blood flow (CBF)?
What effect does hypercapnia (elevated PaCO2) have on cerebral blood flow (CBF)?
How is regional cerebral blood flow (CBF) governed?
How is regional cerebral blood flow (CBF) governed?
What effect do potent volatile anesthetics have on cerebral blood flow (CBF)?
What effect do potent volatile anesthetics have on cerebral blood flow (CBF)?
What effect does nitrous oxide have on cerebral blood flow (CBF)?
What effect does nitrous oxide have on cerebral blood flow (CBF)?
What happens to spinal cord perfusion pressure (SCPP) when spinal subarachnoid space pressure (SSSP) increases?
What happens to spinal cord perfusion pressure (SCPP) when spinal subarachnoid space pressure (SSSP) increases?
Which of the following substances has a cerebral vasoconstrictive effect?
Which of the following substances has a cerebral vasoconstrictive effect?
What effect do opioids have on cerebral blood flow (CBF)?
What effect do opioids have on cerebral blood flow (CBF)?
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