||This series of photographs illustrates the technique used for injecting local anesthetic into the lateral nasal wall.
Originally, functional endoscopic sinus surgery was usually performed under local anesthesia.
Today, it is safe to say that the majority of cases are done under a general anesthetic.
Even when a general anesthetic is being used these injections are usually made using a solution which contains a local anesthetic combined with a vasoconstrictior [e.g. 0.5% Xylocaine containing one in 100,000 parts of adrenaline.
The first injection is usually placed just anterior to the insertion of the middle turbinate into the lateral nasal wall.