What exactly is a ventilator - and how vital are they in treating COVID-19?

U.S. Army Specialist Fredrick Spencer assembles a T1 Hamilton ventilator in a mobile lab unit in the Javits New York Medical Station intensive care unit bay monitoring coronavirus disease (COVID-19) patients in New York City, U.S. Apri 4, 2020. Picture taken April 4, 2020.  U.S. Navy/Chief Mass Communication Specialist Barry Riley/Handout via REUTERS.  THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. - RC24ZF9NK4WZ

A US Army Specialist assembles a T1 Hamilton ventilator in New York. Image: US Navy/Chief Mass Communication Specialist Barry Riley/Handout via REUTERS

Emma Charlton
Writer, Forum Agenda
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Ventilators blow oxygenated air into the lungs. Image: British Lung Foundation
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