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
[{'content': 'Drug not to be given in ishchemic hea disease \nSelect and explain. \nA. Atenolol, B. ACE inhibitor, C. Isopreterenol, D. Streptokinase', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Refer kDT 6/e p547 Isopreterenol is a beta adrenergic agonists and is contraindicated in ishchemic hea disease. As it can increase myocardial oxygen demand by causing tachycardia', 'role': 'assistant'}]