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
Potassium channel opener with anti anginal activity is 
Select and explain. 
A. Nicorandil, B. Dipyramidole, C. Trimetazidine, D. Oxyphedrine
A: Nicorandil
Answer: A: Nicorandil 
Explanation: Refer katzung 11e p 158 Nicorandil is a vasodilatory drug used to treat angina. Angina is chest pain that results from episodes of transient myocardial ischemia. This can be caused by diseases such as atherosclerosis, coronary aery disease and aoic stenosis. Angina commonly arises from vasospasm of the coronary aeries.