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KMID : 1155520150100020110
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Anesthesia and Pain Medicine
2015 Volume.10 No. 2 p.110 ~ p.117
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Airway dimensions and margin of safety with the left-sided double-lumen tube in patients of a short stature
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Lee Won-Jin
Lee Ji-Yong
Choi Deul-Nyuck
Shin Chee-Mahn
Cho Kwang-Rae
Kim Myoung-Hun
Lee Jeong-Han
Lim Se-Hun
Lee Kun-Moo
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Abstract
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Background:The size and depth of the double-lumen tube (DLT) are important for one-lung ventilation (OLV). In patients of a short stature, it is difficult to perform OLV successfully. We designed this study to evaluate the dimensions and margin of safety of the left main bronchi in patients of a short stature for appropriate OLV.
Methods:Chest computed tomography (CT) scans of 241 patients (22 male, 219 female) of a short stature (height below 155 cm) were analyzed retrospectively. The diameters of the trachea (DT), the right and left main bronchi (DR and DL), and the lengths of the right and left main bronchi (LR and LL) were measured at the coronal section of the chest CT scans using a picture archiving communication system program.
Results:There were no significant correlations between the heights and lengths of the right and left main bronchi. In addition, the ages and weights of the patients showed no significant correlations with the airway dimensions. The lengths of the bronchial lumen of the left-sided Mallinckrodt DLT show variations of 3 to 5.5 mm with tubes of identical sizes. The margin of safety is 13.8 ± 4.1 mm assuming that appropriately sized DLTs are inserted.
Conclusions:For successful and safe OLV in patients of a short stature, anesthesiologists should consider the length of the main bronchus and the actual length of the bronchial lumen of the DLT.
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KEYWORD
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Body height, Bronchi, Computed tomography
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