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Anesth Pain Med > Volume 10(2); 2015 > Article
Cardiothoracic and Vascular Anesthesia
Anesthesia and Pain Medicine 2015;10(2):110-117.
DOI: https://doi.org/10.17085/apm.2015.10.2.110    Published online April 30, 2015.
Airway dimensions and margin of safety with the left-sided double-lumen tube in patients of a short stature
Wonjin Lee, Ji Yong Lee, Deul Nyuck Choi, Chee Mahn Shin, Kwangrae Cho, Myoung Hun Kim, Jeong Han Lee, Se Hun Lim, Kun Moo Lee
Department of Anesthesiology and Pain Medicine, Busan Paik Hospital, Inje University College of Medicine, Busan, Korea. 2wonjin@naver.com
Received: 29 January 2015   • Revised: 20 March 2015   • Accepted: 20 March 2015
Abstract
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.
Key Words: Body height, Bronchi, Computed tomography
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