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Questions and Answers
What is the effect of high CO2 levels on cerebral vessels in patients with closed-head injuries?
What is the effect of high CO2 levels on cerebral vessels in patients with closed-head injuries?
- No change in cerebral blood flow
- Cerebral vasoconstriction
- Cerebral blood flow cessation
- Cerebral vasodilation (correct)
What is the consequence of increased intracranial pressure in patients with traumatic brain injury?
What is the consequence of increased intracranial pressure in patients with traumatic brain injury?
- Cerebral vasoconstriction and reduced blood flow
- Cerebral hypoxia and ischemia (correct)
- Increased risk of psychotic events
- Cerebral vasodilation and improved oxygenation
What happens to the response mediated by central chemoreceptors in the face of chronically elevated CO2 levels?
What happens to the response mediated by central chemoreceptors in the face of chronically elevated CO2 levels?
- The response is unpredictable
- It is accentuated or increased
- There is no change in the response
- It is muted or decreased (correct)
Why does the brain swell acutely in patients with traumatic brain injury?
Why does the brain swell acutely in patients with traumatic brain injury?
What is the result of decreased PCO2 in patients with closed-head injuries?
What is the result of decreased PCO2 in patients with closed-head injuries?
What is the effect of the kidneys' retention of bicarbonate ions in response to respiratory acidosis?
What is the effect of the kidneys' retention of bicarbonate ions in response to respiratory acidosis?
What is the value of RV on the spirogram?
What is the value of RV on the spirogram?
What is the sum of IRV and VT equal to?
What is the sum of IRV and VT equal to?
How should O2 therapy be administered to chronically hypercapnic patients?
How should O2 therapy be administered to chronically hypercapnic patients?
What is the response of the peripheral chemoreceptors to hypercapnia when hyperoxia is present?
What is the response of the peripheral chemoreceptors to hypercapnia when hyperoxia is present?
Which of the following conditions does not stimulate the chemoreceptors?
Which of the following conditions does not stimulate the chemoreceptors?
What is the term used to describe the breathing pattern characterized by gradual increases and decreases in tidal volume and respiratory rate, followed by periods of apnea?
What is the term used to describe the breathing pattern characterized by gradual increases and decreases in tidal volume and respiratory rate, followed by periods of apnea?
