Endotracheal Tube has multiple important uses. In surgery, general anesthesia paralyzes the lungs, and intubation connects to a ventilator for breathing assistance. For patients with severe pneumonia, head injury, lung collapse, respiratory failure, heart failure, ARDS, etc., it offers breathing support. It can also remove airway foreign objects and protect the airway during a massive GI bleed by preventing stomach contents from entering the lungs.