Life support refers to various therapies that help keep patients alive when vital organs are failing.
When people say “life support,” they often refer to a mechanical ventilator, which is also known as a “breathing machine.” Mechanical ventilation helps patients breathe by pushing air into their lungs. The mechanical ventilator is connected to the patient by a tube that goes through the mouth and into the windpipe. Patients who need less lung support than mechanical ventilation may simply have a mask over their mouths and nose to deliver oxygen.