The sniffing position provides greater occipito-atlanto-axial angulation than simple head extension: a radiological study.

By London Spine

The sniffing position provides greater occipito-atlanto-axial angulation than simple head extension: a radiological study.

Can J Anaesth. 2007 Feb;54(2):129-33

Authors: Takenaka I, Aoyama K, Iwagaki T, Ishimura H, Kadoya T

While the anatomic sniffing position has traditionally been considered the standard head and neck position for laryngoscopy, recent evidence suggests that the sniffing position provides no significant advantage over simple head extension. To establish if the sniffing position provides an anatomic advantage, we compared the occipito-atlanto-axial extension angle, a key determinant for obtaining a good laryngeal view during laryngoscopy, in simple head extension and sniffing positions.

PMID: 17272252 [PubMed – indexed for MEDLINE]