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Acta Anaesthesiologica Scandinavica 2002; 46(3): 341 New insertion technique of the Esophageal–Tracheal Combitube® R. M. Urtubia, M. Frass, F. Agrò Sir, The Esophageal-Tracheal Combitube® (ETC, Tyco-Kendall, Gosport, Hampshire) is a double lumen tube whose special design allows blind and laryngoscopic insertion either in the trachea or in the esophagus (1, 2). At present, no unique insertion technique has been described (Fig. 1). The use of ETC in elective patients allowed us to identify a subset of patients in whom insertion would be difficult. We have developed a new insertion technique that would resolve the difficulties found in these patients. Figure 1. Original insertion maneuver. The new insertion technique consists in grasping the maxillary teeth or the maxillary alveolar ridge with the index finger while pushing the chin with the middle finger (Fig. 2). The enlarged interincisor distance allows easier insertion of the ETC, especially in partially edentulous patients and in patients with limited oral opening. In addition, as the original technique, it does not require any cervical movement, which would make it also suitable for cervical spine trauma patients. Figure 2. New insertion maneuver. Observe the larger oral aperture obtained compared to that in Fig. 1. For patients in sitting and prone position, or when the operator is facing the patient, a similar technique would be useful. The index finger grasps the mandibular teeth or alveolar ridge while the middle finger pushes the cheek (Fig. 3). Up to date, we have successfully used this technique in more than 80 patients. In addition, this technique would be more acceptable for most operators because it avoids introducing the thumb in the oral cavity. Further studies are needed to evaluate the efficacy of this method, especially in cervical spine trauma. Figure 3. New insertion maneuver for patients in sitting and prone position, or when the operator faces the patient. Address: Ricardo M. Urtubia Intensive Care & Anesthesia Unit Mutual de Seguridad Hospital, C.CH.C. Santiago, Chile References 1. Frass M. Development, patent procedure, and 15 years experience: Combitube − from bench to bedside. Curr Opin Clin Exp Res 2000: 2: 31–38. 2. Urtubia RM, Aguila CM, Cumsille MA. Combitube: A study for proper use. Anesth Analg 2000: 90: 958–962. 3. Gaitini LA, Vaida SJ, Mostafa S et al. The Combitube in elective surgery. A report of 200 cases. Anesthesiology 2001: 94: 79–82.