Mnemonic for causes of failed intubation is : INTUBATION
Infections of larynx
Neck mobility abnormalites
Teeth abnormalties(loose tooth,protuberant tooth)
Upper airway abnormalties (strictures or swellings)
Bull neck deformities
Ankylosing spondylitis
Trauma/tumour
Inexperience
Oedema of upper airway
Narrowing of lower airway