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GENERAL ARTICLES

A Multicenter Study of the Ambu® Laryngeal Mask in Nonparalyzed, Anesthetized Patients

Carin A. Hagberg, MD^*, Frank Samsoe Jensen, MD, PhD, Harald V. Genzwuerker, MD, Renée Krivosic-Horber, MD, Bettina U. Schmitz, MD^*, Jochen Hinkelbein, MD, Marius Contzen, MD, Herve Menu, MD, and Karim Bourzoufi, MD

*Department of Anesthesiology, University of Texas Medical School at Houston, Houston, Texas; Department of Anaesthesiology, Gentofte University Hospital, Hellerup, Denmark; University Hospital Mannheim, Institute of Anesthesiology and Intensive Care Medicine, Mannheim, Germany; Hôpital Jeanne de Flandre, Clinique d’Anesthésie Réanimation, Lille Cedex, France

Address correspondence and reprint requests to Carin A. Hagberg, MD, Department of Anesthesiology, The University of Texas Medical School at Houston, 6431 Fannin Street, MSB 5.020 Houston, TX 77030. Address e-mail to carin.a.hagberg{at}uth.tmc.edu.

We designed this multicenter trial to evaluate the performance and safety of the Ambu® laryngeal mask, a new disposable supraglottic airway device, in patients scheduled for elective surgery. One-hundred-eighteen nonparalyzed, anesthetized patients (ASA physical status I–II, age, 18–65 yr, body mass index, 18–30 kg/m^–2) receiving total IV anesthesia were included in this study. After device insertion, fiberoptic position and oropharyngeal leak pressure were determined at an intracuff pressure of 60 cm H₂O. Ease of ventilation was determined by controlling ventilation at 6 mL/kg tidal volume. Any complications were noted and recorded. Device placement was successful in all patients on the first or second attempt (92.4% or 7.6%, respectively) with an insertion time (removal of face mask until first tidal volume) of 44.9 ± 37.91 s. Adequate ventilation was achieved in all patients and the vocal cords could be visualized by fiberoptic endoscopy in 91.5% of patients. Oropharyngeal leak pressures were 24.1 ± 5.44 cm H₂O. Blood was detected on the device in 8.5% of patients. Complications and patient complaints were minor and quickly resolved. The Ambu laryngeal mask is easy and quick to insert and provides a safe and efficient seal during positive pressure ventilation in nonparalyzed patients scheduled for elective surgery.

This article has been cited by other articles:

				S. J. Vaida and U. A. Yodfat Angulation of the Airway Tube in the AMBU Laryngeal Mask Could Be Responsible for Improved Insertion Success. Anesth. Analg., July 1, 2006; 103(1): 264 - 264. [Full Text] [PDF]

				Disposable Laryngeal Mask Performs Well Journal Watch Emergency Medicine, January 17, 2006; 2006(117): 7 - 7. [Full Text]

Anesthesia & Analgesia® is published for the International Anesthesia Research Society® by Lippincott Williams & Wilkins with the assistance of Stanford University Libraries' HighWire Press®. Copyright 2006 by the International Anesthesia Research Society. Online ISSN: 1526-7598   Print ISSN: 0003-2999