Which nostril should an NPA be inserted into?

Inserting a nasopharyngeal airway (NPA) into the right nostril is often preferable due to anatomical considerations. The anatomy of the nasal passages varies from person to person, but in many individuals, the right nostril typically has a more favorable angle that allows for easier passage of the airway.

Using the right nostril can help to avoid potential obstructions that might be present in the left nostril, such as deviated septums or other structural issues. Additionally, when performing this procedure, it's essential to ensure that the NPA is inserted along the natural curvature of the nasal passage to minimize discomfort and reduce the risk of trauma to the nasal tissues.

In a clinical setting, practitioners often choose the nostril based on patient comfort and the specific anatomical layout observed during the examination. While NPAs can be used effectively in either nostril, the right side may often present fewer challenges in many patients, making it a common practice choice.