Critically ill patients with acute hypoxic respiratory failure receive supplemental oxygen as a component of their treatment.  In recent years, exposure to high levels of FiO2 with resultant “hyperoxia” have been associated with increased mortality in critically ill patients.  At present, there is no clinical practice guideline on oxygenation targets for adult patients with hypoxic respiratory failure.  In this podcast, we discuss the recently published HOT-ICU trial that evaluated a lower versus high oxygenation target in adult patients with acute hypoxic respiratory failure.