An NPA (nasopharyngeal airway) is a crucial medical device used to maintain or secure an open airway in patients who are unable to breathe adequately on their own. This flexible tube is designed to be inserted into the nostril and extends down the nasopharynx, providing a clear passage for air to flow to the lungs. NPAs are particularly useful in emergency situations, as they can be quickly and easily placed, even in patients with a reduced level of consciousness.