Aerial blood gas analysis of a patient reveals pH 7.2, HCO3 36mmol/L, pCO2 60mm of Hg. The abnormality is :: (A) Respiratory acidosis with compensatory metabolic alkalosis, (B) Respiratory acidosis, (C) Respiratory alkalosis with compensatory metabolic acidosis, (D) Respiratory acidosis with compensatory metabolic acidosis
Answer is B. Answer B (Respiratory acidosis)