Well according to wikipedia it descriped “A ventilator is a machine that provides mechanical ventilation by moving breathable air into and out of the lungs, to deliver breaths to a patient who is physically unable to breathe, or breathing insufficiently.”
According to many articles posted on various news media, “
“The reason this is a crisis is because without the ventilators, patients will die,” says Prof David Story, deputy director of the University of Melbourne’s Centre for Integrated Critical Care, and a staff anaesthetist at Austin Hospital.
Prof Sarath Ranganathan, a board member of Lung Foundation Australia and director of respiratory and sleep medicine at Melbourne’s The Royal Children’s Hospital, said: “The experience in Italy and Spain, and the modelling used by mathematicians around the world, indicates the number of people who will become critically ill with Covid-19 will greatly exceed the capacity to care for them using respiratory support.
“Without access to ventilators many patients who might survive the infection will die.”