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Patient’s clinical course. The black line indicates the SpO2:FiO2 ratio, a measure of oxygen requirement used as a representation of the patient’s pulmonary status. Dark and light gray lines indicate AST and ALT, respectively. Labeled arrows indicate significant clinical events. Abbreviations: ALT, alanine aminotransferase; AST, aspartate aminotransferase; CRP, C-reactive protein; HD, hospital day.
