| The increased tracheal blood flow contributes to increased airway exudation. |
| We evaluated the tracheal wall, whereas previous reports used bifurcation specimens from lobar or segmental bronchi. |
| All 10 of the gastric specimens tested positive for pepsin, and all 10 of the tracheal specimens were negative. |
| In dogs, chronic exposure to episodic hypoxia via tracheal occlusion depresses arousal responses to asphyxial gases when rebreathing expired air. |
| Alternatively, serum antibody may be transuded into tracheal secretion or reach mucosal surface in inflammatory exudates. |
| A useful alternative to tracheal suctioning is the intervention provided by mechanical exsufflation. |
