[n, (%)] | |
---|---|
Secretion/blood | 21 (16.3%) |
Reduced mouth opening | 12 (9.3%) |
Short neck | 9 (8.5%) |
Immobilisation | 7 (5.4%) |
Untrained personal | 7 (5.4%) |
Retrognathy | 4 (3.1%) |
Patient positioning | 3 (2.3%) |
Anatomy pharynx/larynx | 3 (2.3%) |
Foreign body | 1 (1.6%) |
Anatomy neck | 0 (0.0%) |
Malfunction equipment | 0 (0.0%) |