Ventilator A ventilator (VEN-til-a-tor) is a machine which will support breathing in patients with serious conditions. These machines used in the hospitals. Ventilator get oxygen into the lungs. Expel carbon dioxide from the body. (Carbon dioxide is a waste gas that can be harmful.). Enable patients to breathe easier. Breathe for patients who have lost all capacity to breathe on their own. A ventilator is usually used for short period of time, mainly during surgery when the patient is under general anesthesia. The term "anesthesia" refers to lost feeling and mindfulness. General anesthesia briefly puts you to sleep. The medicines used to incite anesthesia can disturb breathing. A ventilator ensures that the patient keep breathing during surgery. A ventilator might also be utilized during treatment for a serious lung disease or other condition that influences poor breathing. A few patients may need to use ventilators for long period or for rest of their lives. In these cases, the machines can be used outside of the hospital—let’s say at home. A ventilator doesn't treat a disease or condition. It's utilized just for life support.