Abstract: Objective Our goal was to investigate feasibility and safety of placing extraluminal 5F Arndt Endobronchial Blocker (AEB) guided by Cook guide-wire for thoracic surgery in infants. Methods We retrospectively examined the anesthetic records for details of AEB placement and evaluated the effect of lung isolation in 22 children under the age of 2 years undergoing OLV with a 5F AEB for thoracic surgery at our department. All the patients firstly had the AEB placed into the trachea with the Cook guide-wire, followed by the intubation of a cuffed Endotracheal tube (ETT) 0.5F size below the size expected for the age. The position of the AEB was adjusted with using ideo-assisted flexible fiber optic bronchoscope through the Arndt multi-port airway adaptor while the patients were ventilated. Results Twenty-two cases were included, aged from 4 months to 2 year old, weighted from 5.6 kg to 11.0 kg. We were able to successfully achieve lung isolation in 20 of 22 patients using a 5F AEB, 2 cases had AEB migrated and one case had hypoxia after one lung ventilation. Conclusions Extraluminal 5F AEB can be applied for thoracic surgery in young children, but there is a danger of migration.
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