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: Pharmacology
Lidocaine produces its antiarrhythmic effects by 
Select and explain. 
A. Increasing A-V conduction, B. Decreasing cardiac excitability, C. Increasing cardiac conduction velocity, D. Increasing spontaneous pacemaker activity
B: Decreasing cardiac excitability
Answer: B: Decreasing cardiac excitability 
Explanation: None