Subject(s)

COVID-19/therapy , Critical Care/methods , Frailty/physiopathology , Health Care Rationing/methods , Intensive Care Units/supply & distribution , Respiratory Tract Diseases/physiopathology , COVID-19/complications , Canada , Chronic Disease , Critical Care/ethics , Cystic Fibrosis/complications , Cystic Fibrosis/physiopathology , Forced Expiratory Volume , Frailty/complications , Health Care Rationing/ethics , Health Resources , Health Services Accessibility , Humans , Mortality , Oxygen Inhalation Therapy , Patient Selection , Prognosis , Pulmonary Arterial Hypertension/complications , Pulmonary Arterial Hypertension/physiopathology , Pulmonary Diffusing Capacity , Pulmonary Disease, Chronic Obstructive/complications , Pulmonary Disease, Chronic Obstructive/physiopathology , Pulmonary Fibrosis/complications , Pulmonary Fibrosis/physiopathology , Pulmonary Medicine , Respiratory Function Tests , Respiratory Tract Diseases/complications , Societies, Medical , Surge Capacity , Triage/methods