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
[{'content': 'In which of the following condition does an ABG analysis show: pH 7.2,| PaC02, |HC03: \nSelect and explain. \nA. Respiratory and metabolic acidosis, B. Respiratory acidosis, C. Compensated metabolic acidosis, D. Respiratory alkalosis', 'role': 'user'}, {'content': "Answer: A \nExplanation: The ABG analysis given in the question points to a mixed acid-base disorder, Respiratory acidosis-Metabolic acidosis. In this condition there is a high or normal anion-gap metabolic acidosis; prevailing PaCO2 above predicted value. This is seen in conditions like severe pnuemonia, pulmonary edema. The given Blood Gas analysis profile cannot be explained by either metabolic or respiratory alkalosis alone, even with or without compensation. Ref: Renal and Electrolyte Disorder By Robe.W.Schrier, Page 133 ; Harrison's Internal Medicine, 18th Edition, Pages 364, 371, 372", 'role': 'assistant'}]