What exactly is an iron lung?
An iron lung is a machine that enables a person to breathe when normal muscle control has been lost or the work of breathing exceeds the person’s ability. It is a form of medical ventilator. Properly, it is called a negative pressure ventilator. My cousin had polio and was on one for several years during the early part of her life. Today, she does not need one, but still has lots of side effects from Polio!
