Because an Elevated PaCO₂ increases Ventilatory Drive in Normal Subjects

question 27

Multiple Choice

Because an elevated PaCO₂ increases ventilatory drive in normal subjects, the clinical presence of hypercapnia indicates which of the following?
I.inability of the stimulus to get to the muscles
II.weak or missing central nervous system response to the elevated PCO₂
III.pulmonary muscle fatigue

• A)I and II
• B)I and III
• C)II and III
• D)I, II, and III

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