This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiopulmonary resuscitation and mechanical ventilation, Subject name: Anaesthesia
[{'content': 'Placement of double lumen tube for lung surgery is best confirmed by \nSelect and explain. \nA. EtCO2, B. Airway pressure measurement, C. Clinically by auscultation, D. Bronchoscopy', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Double lumen tube is used for one - lung ventilation.In double lumen tube, one is endobronchial and the other sho lumen is endotracheal. One-lung ventilation is indicated in surgeries like pneumonectomy ,lobectomy,lung transplantation, bronchopleural fistulas... . Most commonly used double lumen tube is left-sided tube . Bronchoscopy is the ideal method of confirmation of the tube', 'role': 'assistant'}]