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Korean Journal of Anesthesiology 1998;35(3):488-491.
DOI: https://doi.org/10.4097/kjae.1998.35.3.488   
Prediction of Depth of Left-sided Double Lumen Tube Insertion Using Preoperative Chest X-ray.
Kwang Ho Lee, Hyun Kyo Lim, Kyung Bong Yoon, Kyoung Min Lee, Hee Uk Kwon
Department of Anesthesiology, Yonsei University Wonju College of Medicine, Wonju, Korea.
INTRODUCTION: Accurate placement of double-lumen endobronchial tube (DLT) is essential for optimal gas exchange and collapse of nondependent lung during one-lung anesthesia. The goal of this study was to determine if measurement of tracheal length from the preoperative chest X-ray can be used for the prediction of adequate length of left-sided DLT insertion.
25 patients scheduled for elective thoracotomy under one-lung anesthesia were studied. After measurement of tracheal length from preoperative chest X-ray and of length from incisor to vocal cord during intubation, the patient was intubated with left-sided DLT to the depth of predetermined length from incisor to carina. The tube position was evaluated with fiberoptic bronchocsope.
In 22 patients (88%) the DLTs were positioned satisfactorily, and in three patients it was required to reposition DLT.
This technique may be useful for accurate placement of DLT for the one-lung anesthesia.
Key Words: Anatomy: trachea; Equipment: double-lumen endobronchial tube; Intubation, tracheal: technique; Ventilation: one-lung


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