A 67-year-old man with a long history of COPD is hospitalized following an acute exacerbation. Which of the following sets of arterial blood gas findings are most likely to be seen in this patient?
A) 7.58 pH; 58 mmHg CO2; 34 mEq/L HCO3–
B) 7.52 pH; 56 mmHg CO2; 21 mEq/L HCO3–
C) 7.49 pH; 31 mmHg CO2; 29 mEq/L HCO3–
D) 7.47 pH; 28 mmHg CO2; 21 mEq/L HCO3–
E) 7.33 pH; 80 mmHg CO2; 30 mEq/L HCO3–
F) 7.31 pH; 57 mmHg CO2; 20 mEq/L HCO3–
G) 7.12 pH; 29 mmHg CO2; 45 mEq/L HCO3–
H) 6.99 pH; 26 mmHg CO2; 12 mEq/L HCO3–
