Effect of Continuous Intra-airway Monitoring Under Visible Double-lumen Bronchial Catheter on Postoperative Complications of Lung Surgery

Evaluation of the incidence of pulmonary complications three days after surgery by the Melbourne Assessment Scale Melbourne Group Scale（Minimum value 0 points ；Max 8 points

1. Oral temperature > 38°C;
2. White blood cell count > 11.2×10^12/L or use respiratory antibiotics (except prophylactic antibiotics);
3. Pneumonia or pulmonary infection diagnosed by the treating doctor;
4. Chest X-ray examination suggested atelectasis or consolidation;
5. Purulent sputum (yellow/green) with characteristics different from those before operation;
6. Sputum microbiological examination was positive;
7. Oxygen saturation of finger pulse < 90% under suction condition;
8. Readmission or ICU stay > 36h due to respiratory problems

If 4 or more of the above 8 items are satisfied, the subject is considered to have developed pulmonary complications.

The number of times that fiberoptic bronchoscopy should be used to check or adjust the position during the operation, the rate of displacement, the degree of displacement, the number and time of operation suspension due to the adjustment of the position of double-lumen tube, etc Position adjustment assisted by fiberoptic（Check only unadjusted available at the back □ mark ×）

□NO : 1stTime：|__|__|min|__|__|second；□ 2stTime：|__|__|min|__|__|second：□ 3stTime：|__|__|min|__|__|second：□

□YES： 1stTime：|__|__|min|__|__|second；□ 2stTime：|__|__|min|__|__|second：□ 3stTime：|__|__|min|__|__|second：□

Time taken for successful intubation and positioning (time from laryngoscope exposure to successful positioning of double lumen bronchial tube), success rate of first intubation and positioning, and probability of using fiber bronchoscopy for positioning

1. Number of intubation times:|__| Times
2. Time taken for successful intubation positioning:|__|__| Minutes|__|__| seconds
3. Whether fiber bronchoscopy is used for positioning: □ No □ Yes

Intraoperative SPO2<90%

□ Yes □ No

1. st time:|__|__| Minutes|__|___| Seconds;
2. nd time:|__|__| Minutes|__|___| Seconds;
3. rd time:|__|__| Minutes|__|___| Seconds;

Lung atrophy quality during the operation（The condition is judged by the thoracic surgeon）

口Excellent visual field exposure, complete collapse of lung 口Medium The lungs are basically collapsed, but there's still residual air 口Poor Partial collapse or even non-collapse of the lung requires surgical intervention to expose the visual field

1. Postoperative video review: The suction rate during intraoperative sputum suction:

   □ 80%-100%； □ 50-80%; □ 0-50%;

2. After tracheal extubation, take photos to compare the secretion at the end of the bronchus:

   • None
   • Yes: □ Small amount (secretions adhering to the wall less than 2cm); □ Moderate amount (secretion adhering to the wall 2-4cm); □ Large amount (secretions sticking to the wall exceeding 4cm)