This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: CHF, Angina Pectoris and Myocardial Infarction, Subject name: Pharmacology
[{'content': 'Ivabradine is indicated in the management of: \nSelect and explain. \nA. Paroxysomal supraventricular tachycardia, B. Angina pectoris, C. Cardiomyopathy, D. Irritable bowel syndrome', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ivabradine: Bradycardiac drug. It selectively blocks If Na+ channels and reduce HR by inhibiting the hyperpolarization-activated Na+ channel in the SA node. It reduces angina attacks similar to CCBs and b blockers. Advantage of Ivabradine: Lack of effect on GI and bronchial smooth muscle.', 'role': 'assistant'}]