"Difficult airway" or "problematic airway".
King
H K
HK
D000758:Anesthesia / Q000009:adverse effects; D005544:Forecasting; D006801:Humans; D007442:Intubation, Intratracheal / Q000009:adverse effects; D008397:Masks; D011300:Preoperative Care; D012119:Respiration; D012121:Respiration, Artificial / Q000009:adverse effects