Optimizing Non-invasive Ventilation in Acute Respiratory Failure.

Noninvasive ventilation (NIV) and non-invasive respiratory supports are key in managing acute respiratory failure (ARF), with effectiveness depending on etiology and context. In hypercapnic ARF, especially acute exacerbations of COPD, NIV reduces intubation rates, hospital stay, and mortality, particularly when respiratory acidosis improves early. In cardiogenic pulmonary edema, continuous positive airway pressure and NIV improve oxygenation and reduce intubation rates. In "de novo" hypoxemic ARF (eg, pneumonia, ARDS), NIV carries higher failure risk and potential harm if intubation is delayed. Optimal application requires careful patient selection, early initiation, tailored settings, and close monitoring.