This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hypeension, Arrhythmias, Dyslipidemia, Subject name: Pharmacology
In patient of hypeension, metoprolol and verapamil are given together. This combination can result in 
Select and explain. 
A. Atrial fibrillation, B. Bradycardia, C. Torsades' de pointes, D. Tachycardia
B: Bradycardia
Answer: B: Bradycardia 
Explanation: Beta blocker (metoprolol) and non-DHP CCBs (verapamil) block SA node and AV node. Both combined can cause severe bradycardia and AV block. Drugs causing Torsades' de pointes include: Quinidine, Procainamide, Cisapride, Astemizole, Terfenadine etc.