Ventilators: - are intended for use for a few days, not a few weeks. The artificial air pressure destroys lung cells and capillaries - patients are sedated to

Ventilators: - are intended for use for a few days, not a few weeks. The artificial air pressure destroys lung cells and capillaries - patients are sedated to avoid pulling out tubes. This weakens both their lung function and the rest of their body due to immobilization, including bed sores. Usually their trachea is damaged and they cannot talk after removing the tubes for a period of time, and must do physical rehabilitation afterwards. - doctors and nurses consider patients on ventilators the sickest in the hospital, followed by recent ventilator patients - being in a hospital for a month or more exposes patients to other infections, which are not immediately apparent in a sedated patient - China warned about ventilator use being usually unproductive with corona very early in 2020, so it took a while for US doctors to understand that the low oxygen levels measured in corona patients was not a critical thing in most cases if they could still breathe on their own. ER doctors are not researchers, so they follow previous recommendations until told otherwise.