This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pharmacology
Verapamil is contraindicated in: 
Select and explain. 
A. Hypeesion, B. Complete hea block, C. Paroxysmal supraventricular tachycardia, D. Angina pectoris
B: Complete hea block
Answer: B: Complete hea block 
Explanation: Verapamil decreases the force of contraction, decreases hea rate, depresses SA node and slows down AV conduction.so, not used in complete hea block. CCBs and beta blockers have the synergistic effect They are individually or combined contraindicated in complete hea block Beta blockers are also contraindicated in complete hea block. REF.Essentials of Pharmacology KD Tripathi 8th ed.