This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Modes of Ventilation, Subject name: Anaesthesia
[{'content': 'Not an advantage of synchronized intermittent mandatory ventilation (SIMV) over controlled mode ventilation (CMV): \nSelect and explain. \nA. Increased requirement of sedation and muscle relaxant, B. Less hypotension, C. Less V /Q mismatch, D. Rapid weaning', 'role': 'user'}, {'content': 'Answer: A \nExplanation: disadvantage of control mode ventilation 1. paralysis or deep sedation is required 2. hemodynamic imbalance in background of decreased blood volume 3. respiratory muscle atrophy 4. weaning not possible. synchronized intermittent mandatory ventilation has minimized / removed these side effects', 'role': 'assistant'}]