Abstract
J. R. Avasarala and collaborators, Nagoya, Japan, at the April 1988 meeting of the American Laryngological Association in Palm Beach, Fla, reported the creation of new types of tracheostomy and endotracheal tubes with sensors built into them that can activate an alarm if they are becoming obstructed. They revealed that their research found that electrodes within the lumen of the tube would activate a signal as the resistance across the electrodes changed. Mucous secretion, blood, and tissue within the lumen or at the end of the tube would cause a change in the resistance and, therefore, would set off an alarm. This type of tube would be especially useful in the intensive care unit and may eliminate the possibility of cannula obstruction deaths postoperatively.
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