This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Anatomy
[{'content': 'An ABG analysis shows:pH 7.2, raised pCO2, decreased HCO3: Diagnosis is : \nSelect and explain. \nA. Respiratory acidosis, B. Compensated metabolic acidosis, C. Respiratory and metabolic acidosis, D. Respiratory alkalosis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ref Harrison 19 th ed pg 316-17 There is acidosis ( pH<7.35) Raised PCO2 indicates that change in CO2 is in keeping with change in pH.the respiratory component is therefore primary DecreasedHCO3 indicates that change in HCO3 is also primary', 'role': 'assistant'}]