Can Neck Circumference Measurements Less Than 43cm or Greater Than 43cm Predict Difficulty of Tracheal Intubation?

Can Neck Circumference Measurements Less Than 43cm or Greater Than 43cm Predict Difficulty of Tracheal Intubation?

The circumference of a person's neck is a useful predictor of difficulty of insertion of a breathing tube.

Inclusion Criteria:

• American Society of Anesthesiologists physical status 1-4
• Receiving general endotracheal anesthesia for surgery

Exclusion Criteria:

• Limited range of motion of the neck or jaw
• Cervical spine injuries
• Upper airway pathology
• Previous facial trauma, or goiter
• Patients receiving regional anesthesia or anesthesia other than general, endotracheal anesthesia