Acute hypoxemic respiratory failure (AHRF) is a leading cause of ICU admissions, and noninvasive respiratory support modalities such as high-flow nasal cannula (HFNC) and noninvasive ventilation (NIV) are frequently employed. However, the comparative effectiveness of these two interventions across different patient populations remains unclear. This scoping review aimed to synthesize current evidence comparing HFNC and NIV in the management of adult patients with AHRF, focusing on outcomes such as intubation rates,…