This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anaesthesia
[{'content': 'Calcium channel blockers in anesthesia, True is : \nSelect and explain. \nA. Needs to be decreased as they augment hypotension & muscle relaxation, B. Withheld because they lower LES pressure, C. Should be given in normal doses as they prevent MI & angina, D. All of the above', 'role': 'user'}, {'content': "Answer: C \nExplanation: C i.e. Should be given in normal dose as they prevent MI & Angina Calcium channel blockers potentiate neuromuscular-block, cause lowering of muscle tone of lower esophageal sphincter but there is no such indication of stoppage of this drug during anesthesia. CCB's prevent MI & angina during anesthesia & should be given in normal doses (preoperatively)Q.", 'role': 'assistant'}]