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""Our hypothesis was that the incidence of malposition of a right-sided double-lumen endobronchial tube and right upper lobe collapse may increase when the distance between the carina and the distal margin of the right upper lobe orifice is less than 23?mm, measured from a computerised tomography scan. A total of 76 patients undergoing left-sided thoracic surgery were enrolled. Patients with a measured distance of http://www.selleckchem.com/products/Imatinib-Mesylate.html monitored endobronchial tube malposition and incidence of right upper lobe collapse throughout surgery. There was a significantly higher incidence of bronchial cuff herniation in patients with a distance http://www.selleckchem.com/products/VX-770.html We recommend that the distance between the carina and the distal margin of the right upper lobe bronchus should be routinely measured on the pre-operative computerised tomography scan, and if it is http://www.selleck.cn/products/mi-773-sar405838.html double-lumen endobronchial tube. Left-sided tubes are considered safer due to their greater margin of safety for correct positioning, and may be less prone to malposition during one-lung ventilation [1]. The principal argument against the use of a right-sided tube is its association with a high risk of right upper lobe bronchial obstruction and collapse [2]. These considerations have led some clinicians to prefer left-sided tubes almost exclusively [3, 4]. In contrast, other studies have shown that right- and left-sided tubes show identical clinical performance in terms of the incidence of hypoxia, hypercapnia, increased airway pressure, and right upper lobe collapse [5-7]. In some clinical situations, a right-sided tube is specifically indicated, for example: resection of a left intraluminal tumour; left pneumonectomy; left tracheobronchial disruption; and a sharp angle on the left main-stem bronchus [8]. With the exception of these clinical situations, there is no consensus regarding airway dimensions and right-sided tube use. The right-sided tube incorporates a specially designed cuff, with a slot on the endobronchial side that allows ventilation of the right upper lobe.
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