8 Questions
What is the physiological nervous system response to acute elevations of intracranial pressure (ICP) known as?
Cushing reflex
Which physician proposed the Cushing reflex in 1901?
Dr. Harvey Cushing
What is the triad associated with the Cushing reflex?
Widened pulse pressure, bradycardia, irregular respirations
What is the Cushing reflex a physiological response to?
Acute elevations of intracranial pressure (ICP)
What is the definition of cerebral perfusion pressure (CPP) in the context of the Cushing reflex?
The pressure that pushes blood through the cerebrovascular network
What are the characteristic symptoms of Cushing's triad associated with the Cushing reflex?
Widened pulse pressure, bradycardia, irregular respirations
What did Dr. Harvey Cushing propose as the cause of the dramatic increase in blood pressure associated with the Cushing reflex?
Reflex to brainstem ischemia
In cases of increased ICP, why does cerebral perfusion pressure (CPP) drop?
Systolic blood pressure cannot overcome the resistance present in the brain
Test your knowledge about the role of arterial chemoreceptors in regulating respiration, cardiac output, and regional blood flow. Understand how arterial chemoreceptor stimulation affects sympathetic vasoconstrictor outflow and cardiac activity.
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