Video-stylet for Nasotracheal Intubation in Limited Mouth Opening Patient

Nasotracheal Intubation Assisted by a Video-stylet in Limited Mouth Opening Patient

The aim of the study is to investigate the efficiency of the Video-stylet (Trachway ®) and the fiberoptic bronchoscopy in facilitation of nasotracheal intubation in limited mouth opening patients.

Inclusion Criteria:

1. patients with American Society of Anesthesiologists physical status I-III
2. aged 20-65 years
3. Requiring Nasotracheal Intubation under general anesthesia
4. limited mouth open ,mouth open < 3 cm
5. unlimited neck motion

Exclusion Criteria:

1. Ankylosing arthritis patients.
2. BMI≧35 kg/m2