Contributing factor | No of reports |
---|---|
*Cervical spine instability, facial carcinoma, congenital microsomia, ruptured trachea, and hair in a “bun” were each reported on one occasion. | |
Obesity | 24 |
Limited neck mobility | 17 |
Limited mouth opening | 15 |
Inexperience of laryngoscopist | 14 |
Inadequate assistance | 13 |
Drug errors | 13 |
Poor/prominent dentition | 11 |
Equipment deficiencies | 8 |
Laryngeal tumour | 8 |
Recent traumatic intubation | 8 |
Neck mass | 3 |
Beard | 2 |
Masseter spasm | 2 |
Others* | 5 |