There are obvious reasons that have nothing to do with quality of care. Iron lungs are physically large and heavy. They are expensive and difficult to move. He

There are obvious reasons that have nothing to do with quality of care. Iron lungs are physically large and heavy. They are expensive and difficult to move. Health insurance doesn't want to pay extra for your comfort. With an iron lung you can talk and eat. There is minimal difficulty; simply time your sentences or swallows to match the action of the iron lung. There is also no danger of tubes damaging your vocal cords. The choice of technology is obvious, depending on how much patient comfort is valued. It is clear that the modern system doesn't give a damn if patients are miserable.