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
A female patient after injury comes to casualty. Her ABG shows low pH, pCO2 high, bicarbonate normal. The diagnosis is: 
Select and explain. 
A. Respiratory alkalosis, B. Respiratory acidosis, C. Metabolic acidosis, D. Metabolic alkalosis
B: Respiratory acidosis
Answer: B: Respiratory acidosis 
Explanation: Answer is B (Respiratory acidosis) The acid base disorder is respiratory acidosis. There is acidosis (pH : low) Raised pCO2 (acidosis) indicates that the change in CO2 is therefore primary Normal bicarbonate indicates that there is no alteration in the metabolic component The acid base disorder therefore is Respiratory acidosis.