Noninvasive ventilation (NIV) has been used to treat acute respiratory failure for more than 30 years, and it is undoubtedly one of the most important advances in respiratory support [1]. With the progress made in ventilation modes and interfaces, NIV has become an essential respiratory support method in the hospital setting, and it is widely applied in the fields of critical and respiratory medicine, emergency care, anesthesia, rehabilitation, and long-term home care [1–3]. NIV is recommended as the first-line respiratory support method for patients with acute exacerbations of chronic obstructive pulmonary disease (AECOPD) who develop acute hypercapnic respiratory failure (AHRF).
