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Arterial blood gas analysis of a 45 yr old male are as follows:
ph 7.25
pCO2 70 mm Hg
HCO3 26 meq/l

Most likely cause of this disturbance is??
a. COPD
b. Diabetic keto acidosis
c. Heroin overdose
d. Overdose of diuretics
e. Overdose of aspirin.

A.

. COPD