Effectiveness of C-MAC Video-stylet Versus Fiberoptic Bronchoscope for Awake Intubation

Inclusion Criteria

• •patients with BMI ≥ 30 kg/m2,
• •presence of any predictors of difficult intubation;
• •Mallampati score \> =3;
• •inter-incisor distance \< 3 cm;
• •thyromental distance \< 6 cm;
• •neck extension \< 80°from neck flexion;
• •cervical spine instability;
• •history of difficult endotracheal intubation or difficult mask ventilation