Double-Lumen Tube Intubation in the Lateral Position Versus the Supine Position on First-Attempt Success Rate

Double-Lumen Tube Intubation in the Lateral Position Versus the Supine Position on First-Attempt Success Rate Among Patients Undergoing Thoracic Surgery: A Prospective, Randomized, Controlled, Multi-center Trial

The aim of this clinical trial is to find out the first success rate of double lumen intubation in the lateral position in thoracic surgery, it will also find out the safety of double lumen tube intubation in the lateral position. The trial aims to answer the following key questions

Does intubation in lateral position improve the first-time success rate of double-lumen intubation compared with in the supine position? What medical problems can participants experience during double lumen tube intubation in the lateral position? The researchers will compare double lumen intubation in the lateral position vs supine position to see if the position is effective in the success rate of double lumen intubation.

Participants will

Use the supine or lateral position during intubation

Inclusion Criteria:

• need for DLT intubation with elective unilateral thoracoscopic surgery
• age 18-65 years
• American Society of Anesthesiologists (ASA) grade of I or II
• no serious cardiopulmonary disease

Exclusion Criteria:

• aged <18 years or >65 years
• body mass index >30 kg/m2
• cognitive dysfunction and inability to assume the required body position
• previous cervical vertebrae and expected difficult airway (e.g., Mallampati airway grade of III, IV, or higher, maximum mouth opening <3 finger widths, nail-chin distance <6 cm)
• admission to the intensive care unit after surgery and without follow-up