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: Surgery
First line of therapy in treatment of shock: 
Select and explain. 
A. Antibiotics, B. Ionotropic agents, C. Chronotropic agents, D. IV fluids
D: IV fluids
Answer: D: IV fluids 
Explanation: In all cases of shock, regardless of classification, hypovolemia and inadequate preload must be addressed before other therapy is instituted. First-line therapy, therefore, is intravenous access and administration of intravenous fluids.