Needle for thoracocentesis is inserted most commonly at -

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.