Final answer:
Nasopharyngeal airways are commonly used in paediatric patients, including those under 5, provided they are used with care and the correct size, and their use isn't limited to emergency situations only, but also for maintaining an open airway in various scenarios. Option 2 is correct.
Step-by-step explanation:
The use of nasopharyngeal airways in children who are under the age of 5 can be safe and effective when inserted correctly and when the appropriate size is used.
It is a common practice to use nasopharyngeal airways in pediatric patients, not only in emergency situations, but also for maintaining an open airway in children suffering from various conditions that may compromise their ability to breathe. While there is a risk of damage to the nasal passages, this is typically minimal when the airway is sized and placed appropriately.
Moreover, the nasopharynx serves only as an airway and is flanked by the conchae of the nasal cavity; understanding its anatomy and function, including the presence of the pharyngeal tonsils, which are large in children, is crucial for safe and effective management of nasopharyngeal airways.