|Authors||Gao C, Zhou L, Wei C, Hoffman MR, Li C, Jiang JJ|
|Journal||Otolaryngol Head Neck Surg Volume: 139 Issue: 4 Pages: 535-40|
|Publish Date||2008 Oct|
To measure the upper-airway resistance in patients with tracheostomies and determine the value representing decannulation readiness.Fifty-six patients with tracheostomies resultant to laryngeal disease participated in this study. Forty patients met clinical criteria for decannulation; 16 did not. Subglottal pressure was measured with a tube connected to the tracheostomy tube, and airflow was monitored simultaneously using a facemask. Upper-airway resistance measurements were recorded during shallow and deep breathing.During both shallow and deep breathing, the inspiratory and expiratory resistances were significantly higher for the group unsuitable for decannulation (P < .0001). The areas under the receiver operating characteristic curves were 0.938 or greater for the four curves, indicating a high sensitivity and specificity of resistance measures for diagnosis.Objective measurement of upper-airway resistance during shallow and deep breathing may be a useful parameter in determining decannulation readiness of tracheostomized patients.