APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -Insertion of an NPA involves the healthcare provider inserting the NPA into the nares with the concave side facing down to allow for insertion into the posterior pharynx behind the tongue. If there is resistance, the NPA can be rotated, which should allow the tube to fit snugly into the nares.

Detailed explanation-2: -The correct size airway is chosen by measuring the device on the patient: the device should reach from the patient’s nostril to the earlobe or the angle of the jaw. The outside of the tube is lubricated with a water-based lubricant so that it enters the nose more easily.

Detailed explanation-3: -The preference is to insert an NPA into the right nostril. This is because the natural curve of the NPA and the flange bevel will open into the pharynx. If the standard NPA is put in on the left nostril the bevel will sit against the pharyngeal wall and could become occluded.

Detailed explanation-4: -Apply lubricant to the outside of the NPA. Insert the NPA gently into the nasal passage to the predetermined length. A slight rotational movement can be used to assist with insertion. The correct size should sit flush against the nare, causing no blanching to the skin.