Which device might be used for patients undergoing NIV?

A continuous positive airway pressure (CPAP) device is specifically designed to provide a steady flow of air at a constant pressure throughout the breathing cycle. This feature is particularly beneficial for patients undergoing noninvasive ventilation (NIV), as it helps to keep the airways open, reduce the work of breathing, and improve oxygenation. CPAP is commonly used in conditions such as obstructive sleep apnea and can also support patients with respiratory failure by preventing airway collapse during inhalation.

The other choices do not fulfill this function for NIV. A medicated inhaler, while useful for delivering medication to the lungs, does not provide the continuous airflow needed for patients requiring noninvasive respiratory support. A Venturi mask is primarily used for delivering a controlled concentration of oxygen but lacks the necessary pressure support for noninvasive ventilation. A tracheostomy tube, on the other hand, is an invasive device used for patients who require long-term ventilation support through an incision in the trachea, therefore is not indicative of noninvasive strategies.