Intubation, Intratracheal, Thoracic Surgical Procedures
Conditions
Brief summary
The investigators are trying to compare the individually modified-angled tube and the conventional-angled tube in ease of double lumen endotracheal tube insertion and the incidence of related postoperative complications.
Detailed description
Inserting a double lumen endotracheal tube is somewhat more difficult than a single lumen tube intubation because of its larger outer diameter and the more rigid feature. Moreover, the airway axes (oral-,pharyngeal-, and laryngotracheal axis) are not always straight under sniffing condition. Therefore, to make easy to insert a double-lumen tube and reduce the tube-related complications, we are trying to compare the individually angle-modified tube and the manufacturer-provided-angled tube.
Interventions
DEVICEMallinckrodt endotracheal tube with a modified angle
At sniffing position, the distal tip of a double-lumen tube is located at the patient's cricoid cartilage level and then the tube is bent at the intersection point of oral axis and the pharyngolaryngeal axis with an angle between the two axes.
DEVICEMallinckrodt endobronchial tube with a conventional angle
Inserting a manufacturer-provided conventional-angled tube
Sponsors
Samsung Medical Center
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Masking
SINGLE (Subject)
Eligibility
Sex/Gender
ALL
Age
20 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Subjects undergoing thoracic surgery under one lung ventilation * Subjects older than 20 yrs who can give written informed consent
Exclusion criteria
* Those who need rapid sequence intubation * Those with cervical spinal disease (cervical spinal injury, rheumatoid arthritis with atlantoaxial subluxation) * Those with oropharyngeal obstructive disease (including tumor, foreign body) * Those who are expected prolonged intubation after surgery * Those who are pregnant
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| The time taken to intubate a double-lumen tube | within 60 sec | The time taken to insert the tube begins when the laryngoscope passes the patient's lips and ends when the tube passes the vocal cords |
Secondary
| Measure | Time frame |
|---|---|
| The number of attempts needed for successful intubation | Intubation |
| The time taken for the first attempt of intubation | within 60 sec |
| Postoperative sore throat, hoarseness or dysphagia | 30 minutes and 24hours after extubation |
Other
| Measure | Time frame | Description |
|---|---|---|
| Intubation difficulty scale score | At intubation | Intubation difficulty Scale score is a function of seven parameters : number of attempts, number of operators, number of alternative techniques, cormack grade, lifting force needed, laryngeal pressure and vocal cord mobility. (Ref: Intubation Difficulty Scale, Anesthesiology 1997;87:1290-7) |
| Hemodynamic change | 1, 3 and 5 min after intubation | We will record patient's heart rate, blood pressure and any used cardiovascular drugs at 1, 3 and 5 min after intubation |
Countries
South Korea
Outcome results
None listed