None listed
Conditions
Interventions
Left double-lumen endotracheal tube group:After the intubation is completed, the catheter is gradually withdrawn, and the relevant indicators (breath sounds on the non-ventilated side, PETCO2 on the n
Right double-lumen endotracheal tube group:After the intubation is completed, the catheter is gradually withdrawn, and the relevant indicators (breath sounds on the non-ventilated side, PETCO2 on the
Sponsors
The First Affiliated Hospital of China Medical University
Eligibility
Sex/Gender
All
Age
18 Years to 80 Years
Inclusion criteria
Inclusion criteria: 1. ASA classification I–III 2. No serious heart or lung disease before surgery, no history of asthma. 3. CT showed no obvious narrowing of the airway and no obvious abnormality of the airway anatomy. 4. For those who are pre-undergoing right-sided double-lumen endotracheal intubation, the distance between the tracheal carina and the right secondary carina under CT should be more than 5mm. 5.Age 18~80 years old.
Exclusion criteria
Exclusion criteria: 1. Preoperative assessment of the airway is too thin to be placed in an appropriate type of double-lumen bronchial tube 2. Patients with wet lungs with airway bleeding or excessive secretions 3. History of upper respiratory tract infection within one week before surgery 4. Patients with obvious narrowing of the airway and abnormal anatomical structure on CT scan 5. Patients with difficult airways who are expected to have difficulty intubating 6. Patients with unilateral decreased or absent preoperative breath sounds (such as pneumothorax) 7. There is significant loosening of teeth.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The catheter depth decreases from the initial 30 cm H2O to 15 cm H2O.;Auscultate the breath sounds on the non-ventilated side, and the depth of the catheter when the breath sounds are present.;The catheter depth decreases by 2 cm H2O when the peak airway pressure is reduced from the basal value by 2 cm during bronchial single-lung ventilation.;Catheter depth in the presence of PETCO2 on the non-ventilated side.; | — |
Countries
China
Contacts
Public ContactJiangang Yu
The First Affiliated Hospital of China Medical University
Outcome results
None listed