Review Article
Swallowing Disorders after Oral Cavity and Pharyngolaryngeal Surgery and Role of Imaging
Table 3
Penetration and aspiration scale (PAS).
| Score | Description |
| 1 | Material does not enter the airway | 2 | Material enters the airway, remains above the vocal folds, and is ejected from the airway | 3 | Material enters the airway, remains above the vocal folds, and is not ejected from the airway | 4 | Material enters the airway, contacts the vocal folds, and is ejected from the airway | 5 | Material enters the airway, contacts the vocal folds, and is not ejected from the airway | 6 | Material enters the airway, passes below the vocal folds, and is ejected into the larynx or out of the airway | 7 | Material enters the airway, passes below the vocal folds, and is not ejected from the trachea despite effort | 8 | Material enters the airway, passes below the vocal folds, and no effort is made to eject |
|
|