Effect of Small Double-lumen Tube on the Intubation Time of Thoracoscopic Pulmonectomy in Asian Women

Effect of Small Double-lumen Tube on the Intubation Time of Thoracoscopic Pulmonectomy in Asian Women: a Randomized Controlled Clinical Trial

The purpose of this experiment is to verify whether selecting a double-lumen tube one size smaller based on the traditional personalized method can shorten the intubation time without increasing ventilation complications when performing tracheal intubation for thoracic surgery in Asian women.Patients receive double-lumen tubes of a size selected based on the traditional personalized method or one size smaller than that chosen by the traditional method during tracheal intubation. The primary outcome is the time duration required to complete Double-lumen tube intubation and positioning.

The selection of double-lumen tube sizes using traditional methods relies on two factors: height and gender. In this study, all patients planned to be enrolled are female, so the traditional corresponding relationship is roughly as follows: For patients with a height of less than 152 cm, a 32Fr (French) tube is often selected. For patients with a height between 152 - 165 cm, a 35Fr tube is often selected. For patients with a height between 165 - 177 cm, a 37Fr tube is often selected. For patients with a height of more than 177 cm, a 39Fr tube is often selected.

Inclusion Criteria:

• Patients scheduled for thoracoscopic pulmonary resection using a left double-lumen tube under general anesthesia.
• Patients aged 18-80 years
• Chest CT scan in our hospital within one month before surgery
• American Society of Anesthesiologists (ASA) physical status I to III

Exclusion Criteria:

• Anticipated difficult airway
• Patients with tracheal/left main bronchus anomalies
• Height <152 cm
• Refused to participate in the study