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Critical hypoxemia in acute respiratory failure may be defined as a degree of impairment in tissue oxygenation that — in and of itself, and separately from the primary cause of the respiratory failure — threatens the life of the patient.

Special Feature: Update on Rescue Therapies for Hypoxemic Respiratory Failure

Critical hypoxemia in acute respiratory failure may be defined as a degree of impairment in tissue oxygenation that in and of itself, and separately from the primary cause of the respiratory failure threatens the life of the patient.