Tracheostomy Tube Enabling dialect...

Tracheostomy Tube Enabling dialect During Mechanical Ventilation. Nomori H Reprinted with permission from Chest. 2004;125:1046-1051 ?© 2004 American body of Chest Physicians.

Background: A voice tracheostomy tube (VTT) was make knowned to enable patients to speak during mechanical ventilation. Methods: The VTT has slits wound in it and is masked on part of its side with an elastic box enabling the cuff to expand with positive constraining force from the ventilator on inspiration and to deflate forward expiration. By this mechanism, inspired air from the ventilator goe to the lung with the beat inflated, and some of the expired air passes public around the deflated cuff and discharges within the glottis, allowing sufficient ventilation and also enabling vocal enclosure vibration. An experiment using a gauge lung showed that there was little leakage onward inspiration even for low lung compliance and high airway press and that the leakage convolution on expiration was approximately 40% of the ventilated dimensions ie, the volume discharging by means of the vocal fold in clinical use. Results: Sixteen patients who had been managed on ventilation via a conventional tracheostomy tube were switched to the VTT All patients exclude one were able to speak after switching to the VTT without change in Pao2 and Paco2. There were no complications associated with the use of the VTT Bronchoscopy showed that the slap of the VTT did not damage the tracheal mucosa. Conclusion: The VTT enables patients to speak during mechanical ventilation with sufficient ventilation and without aspiration and damage to the tracheal mucosa, flat in patients with low lung compliance.

Submitted according to Anne Swisher, PT, PhD, CCS

Copyright Cardiopulmonary Physical Therapy Journal Jun 2004

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