Abstract：
BACKGROUND:Left double-lumen endotracheal tubes have been widely used in thoracic, esophageal, vascular, and mediastinal procedures to provide lung separation. Lacking clear objective guidelines, anesthesiologists usually select appropriately sized double-lumen endotracheal tubes based on their experience with 35 and 37Fr double-lumen endotracheal tubes, which are the most commonly used. We hypothesized the patients with a left main bronchus of shorter length (<40mm) had a greater chance of experiencing desaturation during one lung ventilation, due to obstruction in the orifice of the left upper lobe with the bronchial tube. METHODS:We included 360 patients with a left double-lumen intubated between September 2014 and August 2015. The patient's age, sex, height, weight, and underlying disease were recorded along with type of surgical procedure and the desaturation episodes. In addition, the width of the trachea and the width and length of the left bronchus were measured using computed tomography. RESULT:Patients with a left main bronchus length of less than 40mm who underwent intubation with a left double-lumen endotracheal tubes had significantly higher incidence of desaturation (Odds Ratio (OR: 8.087)) during one-lung ventilation. Other related factors of patients identified to be at risk of developing hypoxia were diabetes mellitus (OR: 5.368), right side collapse surgery (OR: 4.933), and BMI (OR: 1.105). CONCLUSIONS:We identified that patients with a left main bronchus length of less than 40mm have a great chance of desaturation, especially if other desaturation risk factors are present.
journal_name
Rev Bras Anestesioljournal_title
Revista brasileira de anestesiologiaauthors
Yao HY,Liu TJ,Lai HCdoi
10.1016/j.bjan.2019.03.012subject
Has Abstractpub_date
2019-01-01 00:00:00pages
390-395issue
4eissn
0034-7094issn
1806-907Xpii
S0034-7094(18)30497-5journal_volume
69pub_type
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journal_title：Revista brasileira de anestesiologia
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journal_title：Revista brasileira de anestesiologia
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