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CRITICAL CARE AND TRAUMA

An Evaluation of the Laryngeal Tube® During General Anesthesia Using Mechanical Ventilation

Luis A. Gaitini, MD^*, Sonia J. Vaida, MD^*, Mostafa Somri, MD^*, Victor Kaplan, MD^*, Boris Yanovski, MD^*, Robert Markovits, MD^*, and Carin A. Hagberg, MD

*Department of Anesthesiology, Bnai-Zion Medical Center, Haifa, Israel; and Department of Anesthesiology, University of Texas-Houston Medical School, Houston, Texas

Address correspondence and reprint requests to L. A. Gaitini, MD, Department of Anesthesiology, Bnai-Zion Medical Center, PO Box 4940, 31048, Haifa, Israel. Address e-mail to gaitini{at}netvision.net.il

The Laryngeal Tube® is a new supraglottic ventilatory device for airway management. It has been developed to secure a patent airway during either spontaneous or mechanical ventilation. In this study, we sought to determine the effectiveness of the Laryngeal Tube for primary airway management during routine surgery with mechanical ventilation. One-hundred-seventy-five subjects classified as ASA physical status I and II, scheduled for elective surgery, were included in the study. After the induction of general anesthesia and insertion of a Size 4 Laryngeal Tube, measurements of oxygen saturation, end-tidal CO₂ and isoflurane concentration, and breath-by-breath spirometry data were obtained every 5 min throughout surgery. The lungs were ventilated with volume-controlled mechanical ventilation. The number of attempts taken to insert the Laryngeal Tube and the insertion time were recorded. In 96.6% of patients, it was possible to maintain oxygenation, ventilation, and respiratory mechanics by using mechanical ventilation throughout the surgical procedure. The results of this study suggest that the Laryngeal Tube is an effective and safe airway device for airway management in mechanically ventilated patients during elective surgery.

IMPLICATIONS: In 96.6% of patients intubated with the Laryngeal Tube®, it was possible to maintain oxygenation, ventilation, and respiratory mechanics during mechanical ventilation.

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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