Thoracic Surgery
Conditions
Brief summary
The purpose of this study is to investigate a performance of initial positioning of left sided double lumen endobronchial tubes using peak inspiratory pressures difference between two lungs.
Detailed description
If both lungs have relatively equal volumes and the double lumen tube is in a satisfactory position, peak inspiratory pressure between two lungs is similar or equal when each lumen is sequentially clamped while ventilating each lung with the same tidal volume. We are going to investigate a performance of this method by fiberoptic bronchoscopy view and depth of double lumen tube, and compare with an conventional auscultation method.
Interventions
PROCEDUREPressure difference
Peak inspiratory pressures difference between two lungs
Sponsors
Yonsei University
Study design
Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)
Eligibility
Sex/Gender
ALL
Age
20 Years to 80 Years
Healthy volunteers
No
Inclusion criteria
* ASA physical status class I, II * Use of double lumen tube * Normal preoperative pulmonary function study
Exclusion criteria
* COPD * Restrictive lung disease * CAOD * Unstable hemodynamic status * Peak inspiratory pressure \> 30 mm Hg (Two lung ventilation)
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Fiberoptic bronchoscopy view | within 5 min after intubation | 1. aucsultation under manual ventilation -\> fiberopric bronchoscopy view check 2. peak inspiratory pressure difference under mechanical ventilation -\> fiberoptic bronchoscopy view check |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| depth of double lumen tube | within 5 min after checking fiberopitics | 1. aucsultation under manual ventilation -\> A depth of DLT (incisor) 2. peak inspiratory pressure difference under mechanical ventilation -\> A depth of DLT (incisor) |
Countries
South Korea
Outcome results
None listed