The respiratory therapist is assessing a patient with end-stage COPD who was admitted to the medical ward for an exacerbation of COPD due to increasing sputum purulence. The therapist notes the following ABG results in the patient's electronic medical record: pH 7.52, PaCO2 51; HCO3 40; PaO2 46. Which of the following is the best interpretation of these ABG results?
A) Chronic ventilatory failure with hypoxemia
B) Acute ventilatory failure with hypoxemia
C) Partially compensated metabolic alkalosis with hypoxemia
D) Acute alveolar hyperventilation superimposed on chronic ventilatory failure
Correct Answer:
Verified
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A)
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