Table 1: Definitions of Oral and Pharyngeal Phase Components [9].
Oral Phase Component |
Definition |
Latch |
Seal around the nipple |
Suck-swallow-breathe coordination |
Rhythmical and well-synchronized integration of respiration within repetitive suck-swallow sequence |
Suck-swallow ratio |
Number of sucks per swallow; considered impaired if greater than 3 sucks noted per swallow |
Bolus formation |
Cupping of the bolus by the tongue with no leakage to the anterior sulci or buccal cavity |
Oral Residue |
Any residual on the oral tongue surface, the hard palate, the anterior sulci, or the buccal cavities |
Pharyngeal Phase Component |
Definition |
Velopharyngeal closure |
Adequate seal between soft palate and pharyngeal wall |
Tongue base retraction |
Contact between the tongue base and the posterior pharyngeal wall |
Pharyngonasal Reflux |
Presence of contrast entering the nasopharynx |
Pharyngeal Residue |
Presence of residual contrast on any of the following structures: Tongue base, valleculae, posterior pharyngeal wall, and/or pyriform sinuses |
Laryngeal Penetration |
Entrance of contrast into the laryngeal vestibule but not below the true vocal folds |
Tracheal Aspiration |
Entrance of contrast into the laryngeal vestibule and passing below the level of the true vocal folds |