Evaluate the presence of structural abnormality and perform following observation.

Velopharynx
• Soft palate elevation, laterality
• velopharyngeal closure at saliva swallow

Larynx
• glottal closure
• presence of vocal cord paralysis
• penetration of secretion
• cough ability
• sensation of larynx

Pharynx
• retention of secretion
• pharyngeal contraction at saliva swallow (White out)