The Efficacy of Trachway (R) Intubating Stylet in the Insertion of the Double Lumen Endobronchial Tube

The Comparison of Direct Laryngoscope and Trachway (R) Intubating Stylet in the Insertion of the Double Lumen Endobronchial Tube

The purpose of this study is to investigate the effects of Trachway(R) compared with direct laryngoscope in tracheal intubation of double-lumen endobronchial tube.

Intubation with the double-lumen endobronchial tube (DLT) remains a great challenge for anesthesiologists. Although new upper airway devices, such as Trachway (R), a video-assisted intubating stylet, had been developed for facilitating airway management.

The larger size and the complexity of DLT than single-lumen tube (SLT) makes the difficulties for DLT intubation. Therefore, the investigators designed this study to investigate the effects of Trachway(R)compared with direct laryngoscope in DLT intubation.

Inclusion Criteria:

1. patients with American Society of Anesthesiologists physical status I-III
2. More than 18 years of age
3. Requiring DLT for thoracic surgery

Exclusion Criteria:

1. risk of regurgitation and pulmonary aspiration
2. history of gastroesophageal reflux, pregnancy
3. scheduled tracheostomy and postoperative prolonged ventilation in ICU
4. patients with limited neck extension (< 35°)
5. a distance between the tip of the patient's mandible and hyoid bone of less than 7 cm
6. a sternomental distance of less than 12.5 cm with the head fully extended
7. mouth can not open