A patient with a 10-year history of chronic bronchitis and an acute viral pneumonia exhibits the following blood gas results breathing room air: pH = 7.22; PCO2 = 67; HCO3– = 26; PO2 = 60. Which of the following best describes this patient's condition?
a. Chronic hypoxemic respiratory failure
b. Acute hypercapnic respiratory failure
c. Chronic hypercapnic respiratory failure
d. Acute hypoxemic respiratory failure
ANS: B
Assessment of the pH allows a determination of whether the problem is acute or chronic.
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