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: Unknown
[{'content': 'A newly posted junior doctor had difficulty in finding out\tbase deficit/excess for blood\tin\ta given patient. An\texperienced senior resident advised a quick method to determine acid base composition of blood based on pCO2. Which of the following is the likely method he suggested to predict acid base composition of blood \nSelect and explain. \nA. Red ford nomogram, B. DuBio’s nomogram, C. Goldman constant field equation, D. Siggard-Andersen nomogram', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ref: Ganong 19/e p703 fig 39.8\n\xa0\n\nSiggard-Anderson nomogram: plots the acid-base charecteristics of arterial blood\nPCO2 is placed on the vertical axis and pH on the horizontal axis\n\n\nVertical line through pH 7.40: any point to the left denotes acidosis & any point to right denotes alkalosis\nHorizontal line through p CO2 of 40 mmHg: point above or below this line defines the effective degree of hypo or hyperventilation', 'role': 'assistant'}]