A 65-year-old gentleman with long-standing pulmonary emphyse…
Questions
A 65-yeаr-оld gentlemаn with lоng-stаnding pulmоnary emphysema from cigarette smoking is admitted for a COPD exacerbation. Your resident informs you that he is a “chronic CO2 retainer.” He recently underwent pulmonary function testing as an outpatient which revealed an FEV1 of 40% predicted for his age and weight. A resting, baseline room air arterial blood gas was also obtained and revealed a pH = 7.38, pCO2 = 50, pO2 = 70 (reference values given below). A PA/lateral CXR has been ordered and the results of a just performed ABG are pending. Reference ranges: pH 7.35-7.45 pCO2 36-44 pO2 >85 Which of the following set of laboratories would MOST likely be found in this patient? Na K Chloride HCO3 BUN creatinine A. 140 4.2 100 20 15 1.0 B. 140 4.2 110 20 15 1.0 C. 140 4.2 95 25 15 1.0 D. 140 4.2 105 25 15 1.0 E. 140 4.2 80 30 15 1.0 F. 140 4.2 102 30 15 1.0
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