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: Anaesthesia
Bradycardia is common after injection of – 
Select and explain. 
A. Midazolam, B. Succinyl choline, C. Dopamine, D. Isoprenaline
B: Succinyl choline
Answer: B: Succinyl choline 
Explanation: Succinylcholine is the only muscle relaxant, which stimulates vagus → Bradycardia.