This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thorax, Subject name: Surgery
[{'content': 'Needle for thoracocentesis is inserted most commonly at - \nSelect and explain. \nA. 5th intercostal space in the midaxillary line, B. 3rd intercostal space in the midaxillary line, C. 4th intercostal space in the anterior axillary line, D. 9th intercostal space in the midclavicular line', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., 5th intercostal space in the midaxillary line o Lung extends upto 8th intercostal space at midaxillary line.o Pleura extends upto 10th intercostal space in mid-axillary line. Thus thoracocentesis is done at 8th, 9th or 10th intercostal space in midaxillary line to avoid damage to lung.o Chest tube drainage - 4th or 5th intercostal space just anterior to midaxillary lineo Thoracocentesis - 8th, 9,h or 10th intercostal space in midaxillary line.", 'role': 'assistant'}]