Clinical Application of Right Visual Double Lumen Tube in Thoracoscopic Surgery for Adult Patients

Exclusion Criteria

• •Patients with contraindications for right double-lumen tube insertion (such as right bronchial tumor).
• •The patient has known tracheobronchial anatomical abnormalities
• •Patients previously diagnosed or suspected of having airway difficulty.
• •Patients who need rapid sequence induction.
• •Patients requiring emergency surgery
• •Patients who have undergone thoracic surgery, systemic infection or suspected tuberculosis in the past four weeks.