Lung ventilation function characteristics of survivors from severe COVID-19: a prospective study

Many studies have been performed on the clinical features of COVID-19 patients [1-3]. There are no reports covering the pulmonary ventilation function of COVID-19 patients, especially severe ones whose lung function may be badly affected. In this study, we described the severe COVID-19 patients' lung ventilation function. The First Affiliated Hospital of Harbin Medical University in Heilongjiang Province of China has been designated a treatment center for severe COVID-19 patients in late February. The severe COVID-19 patient in our study refers to the person who has been hospitalized because of COVID-19 with PaO 2 /FiO 2 300 mmHg.