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.
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.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Masking
SINGLE
Enrollment
108
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.
Inserting a manufacturer-provided conventional-angled tube
Samsung Medical Center
Seoul, South Korea
The time taken to intubate a double-lumen tube
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
Time frame: within 60 sec
The number of attempts needed for successful intubation
Time frame: Intubation
The time taken for the first attempt of intubation
Time frame: within 60 sec
Postoperative sore throat, hoarseness or dysphagia
Time frame: 30 minutes and 24hours after extubation
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