Ans: In the intensive care unit, health care providers use many different tools, including: Catheters are flexible tubes used to inject fluids into the body or to drain fluids from the body. Food tubes, give you nutritious support Intravenous (IV) tubes that supply fluids and medicines Equipment that checks your vital signs and displays them on the monitor Oxygen treatment to give more oxygen to breathe in Tracheostomy tubes are respiratory tubes. The tube is inserted into a surgical opening through the front of the neck and the airway. Breathing machines (respirators), carry air and exhale it into your lungs. People with breathing difficulties use this equipment.