A US Army Specialist assembles a T1 Hamilton ventilator in New York. Image: US Navy/Chief Mass Communication Specialist Barry Riley/Handout via REUTERS
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- Ventilators are at the top of the news agenda as the coronavirus pandemic grips the world.
- They're machines that help patients breathe, and can aid recovery from COVID-19.
- In New York, ventilators are being shared to combat shortages.
- Engineers are racing to find faster and cheaper ways to produce more.
During the coronavirus pandemic, ventilators have become a topic of heated debate. There aren’t enough, they aren’t where they need to be, people are having to share, some people are trying to make their own, and the world’s best engineers are working out how to scale up production.
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Ventilators are machines that help patients who can’t breathe on their own. They blow air – and sometimes air with extra oxygen – down the airways and into the lungs. Some also help patients expel air.
The most common symptoms of COVID-19 are fever, tiredness and a dry cough. While around 80% of people who get it recover without special treatment, around 1 in 6 become seriously ill, developing breathing difficulties, according to the World Health Organization.
That’s where ventilators come in, assisting the lungs while the body fights off the infection and – hopefully – recovers. About 30% of people hospitalized with COVID-19 are likely to require mechanical ventilation, according to a study by Imperial College London.
Not enough to go round
With the COVID-19 pandemic advancing so fast, many countries are facing shortages of ventilators, forcing doctors on the frontline to make difficult choices about who gets them and who doesn’t.
Patients are sharing ventilators in one New York hospital, according to the New York Times, a tactic that’s been used before in crisis situations, including during Italy’s coronavirus outbreak and in the immediate aftermath of the 2017 Las Vegas shooting.
In many countries, companies and governments are working together to make more ventilators, and fast. UK Prime Minister Boris Johnson has asked more than 60 manufacturing businesses to help step up production of medical equipment, including ventilators.
But ventilators aren't a panacea. Inserting a breathing tube into airways can raise the risk of lung infection. Breathing tubes can also make it hard to cough, which is one way the body clears out irritants.
The message from the World Health Organization remains the same: maintain social distancing, stay at least one metre away from anyone who is coughing or sneezing, and wash your hands frequently.
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The views expressed in this article are those of the author alone and not the World Economic Forum.
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