We present a simple and reliable airway assembly that can be used to provide lung isolation for lung lavage or other such procedures in small children. Essentially, two tracheal tubes are passed through the glottis, one seated endobronchially to isolate the lung to be lavaged and the second seated in the trachea. This assembly mimics commercially available double lumen bronchial tubes, considered by many to be the airway device of choice for lung isolation. The obvious advantages of this technique include effective lung isolation, the ability to collect lavage returns by gravity instead of suction, and the option of differential lung ventilation after lavage. In addition, the patient can be kept in the supine position, and fiberoptic bronchoscopy can be used to periodically ensure continued lung isolation throughout the procedure.