[John Rogers]

The O2 coming from the wall connection is like the air hose to a NASCAR impact wrench. A ventilator actually pumps in place of your lungs if they cannot. When my wife had her bout with pneumonia 7 or 8 years ago she was in a pressurized room and had a ventilator for 5 days. For the last 1 1/2 they had to strap her hands down as she kept trying to pull the tube out....very uncomfortable she said later! Kind of like the tubs I have had go through my nose and down my throat to clean out the stomach blockage and blood build up!