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  • Detectors designed to magnify the sound of patient respiration by generating a whistle sound. These detectors fit over the proximal end of the tracheal or nasotracheal tube and accentuate the sound of air movement, enabling the operator to easily localize the point of maximal air movement just above the cords. After intubation, the detector helps confirm proper positioning as the whistle is auscultated during both inspiration and expiration. Respiratory rate, depth and inspiratory-expiratory forces can be ascertained by noting the intensity, duration, and pitch of the whistle sound.
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