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: Pathology
Which of the following complications is most likely to occur after recieving several units of blood transfusion? 
Select and explain. 
A. Metabolic alkalosis, B. Metabolic acidosis, C. Respiratory alkalosis, D. Respiratory acidosis
A: Metabolic alkalosis
Answer: A: Metabolic alkalosis 
Explanation: Banked blood has a pH of 6.8 and is acidotic. After massive transfusion citrate in the stored blood is conveed into bicarbonate resulting in metabolic alkalosis. Ref: Transfusion Medicine and Hemostasis: Clinical and Laboratory Aspects By Christopher D. Hillye, Page 291 ; Yao and Ausio's Anesthesiology: Problem-Oriented Patient Management By Fun-Sun F. Yao, 6th Edition, Page 1148