One lung ventilation (OLV) is required during thoracic procedure such as lung and esophagus surgery, and carried out by double lumen tube(DLT). Direct insertion of DLT over a fibreoptic bronchoscope (FOB) is considered more difficult and traumatic than that of a single-lumen tube. Recently, One recent simulation study demonstrated that a soft silicone DLT with a flexible, wire-reinforced bronchial tip (Fuji-Phycon tube) may shorten the time to intubation via tube exchange when compared with less compliant, polyvinyochloride(PVC) DLTs such as the Shilly or Rusch DLT. HumanBroncho® (Insung Medical, Seoul, Korea) is a new silicone DLT with a soft, flexible, non-bevelled, wire-reinforced tip. The oval shape, obtuse angle, and short lateral internal diameter of the bronchial lumen and its flexibility may allow for advancement to the trachea over the FOB easier than the Shilly tube. In the present study, The investigators aimed to test the hypothesis that the silicone DLT would be easier than PVC DLT with regard to railroading grade over an FOB. Investigators further aimed to compare the intubation time over the FOB between the silicone DLT and PVC DLT.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
OTHER
Masking
DOUBLE
Enrollment
46
Fibreoptic intubation with silicone double lumen tube
Fibreoptic intubation with PVC double lumen tube
Ajou universiry hospital
Suwon, Gyeonggi-do, South Korea
railroading grade
grade of ease of railroading over fibreoptic bronchoscope. 1. no difficulty passing the tube 2. obstruction while passing the tube, relieved by withdrawal and 90 degree counter-clockwise rotation(2-1) or more than 90 degree rotation(2-2) 3. obstruction necessitating more than one manipulation or external laryngeal manipulation 4. direct laryngoscope was required
Time frame: an average of 2 minutes
insertion time
time from insertion of FOB into mouth to tube placement into trachea and left main bronchus
Time frame: an average of 2 minutes
number of patients with trauma around glottis, observed by FOB
glottic trauma observation through FOB outside the tube
Time frame: an average of 2minutes
number of patients with tube repositioning during the surgery
count of tube repositioning with FOB during the surgery
Time frame: an average of 3.5 hours
number of patients with complication of hoarseness, sore throat, and swallowing difficulty
hoarseness, sore throat, swallowing difficulty in post-anesthesia care unit
Time frame: an average of 30 minutes
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