Table 2: Additional Risk Factors For Postoperative Airway Compromise

Surgical	Patient	Anesthetic	Institutional
Exposure of > 3 vertebral bodies	Morbid Obesity	Suboptimal airway visualization	No 24 hour in-house anesthesia care
Exposure of C2-C4 levels	Obstructive Sleep Apnea	Multiple intubation attempts	No 24 hour in-house surgical staff
Blood loss > 300 ml	Pulmonary disease	Need for fiberoptic intubation
Operative time > 5 hours	Cervical Myelopathy
Dual approach operations	Prior anterior cervical surgery