Non-Invasive Ventilation (NIV) is a medical technique used to assist patients with breathing difficulties without the need for invasive procedures like intubation. It typically involves the use of a mask or nasal prongs that deliver air or oxygen under pressure, helping to keep the airways open and improve oxygen levels in the blood. NIV is commonly used for conditions such as chronic obstructive pulmonary disease (COPD) and acute respiratory distress syndrome (ARDS). This method is beneficial because it reduces the risk of complications associated with invasive ventilation, such as infections and injury to the airway. NIV can be administered in various settings, including hospitals and at home, making it a versatile option for managing respiratory failure. It is often well-tolerated by patients, allowing for greater comfort and mobility during treatment.