This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
Aerial blood gas analysis of a patient reveals - pH 7.2, HCO3 36 mmol/L pCO2 70 mmHg. The abnormality is 
Select and explain. 
A. Respiratory acidosis with metabolic alkalosis, B. Respiratory acidosis, C. Respiratory alkalosis with metabolic acidosis, D. Respiratory acidosis with metabolic acidosis
A: Respiratory acidosis with metabolic alkalosis
Answer: A: Respiratory acidosis with metabolic alkalosis 
Explanation: Answer- A. Respiratory acidosis with metabolic alkalosisIn this patientpH - DecreasedHCO3 - IncreasedPCO2 - IncreasedPCO2 is increased which indicates respiratory acidosisHCO3- is increased which indicates metabolic alkalosisThus this is a case of mixed disorder, where respiratory acidosis and metabolic alkalosis exist together.