What is velopharyngeal insufficiency and how does it affect speech?

• A. Inadequate closure between the soft palate and pharyngeal wall leading to hypernasal speech and reduced intelligibility.
• B. Limited lateral airway openings causing nasal obstruction.
• C. Poor occlusion of posterior teeth causing malocclusion.
• D. Excessive closure of the velopharyngeal port resulting in hyponasal speech.

Answer: (A)

Velopharyngeal insufficiency is a failure of the soft palate to close properly against the back of the throat during speech. When the velopharyngeal port doesn’t seal, air escapes through the nasal cavity instead of being directed solely through the mouth. This causes hypernasal resonance, nasal emission of air, and reduced intelligibility, especially with sounds that require building oral pressure (like p, t, k, s).

This condition is commonly seen with cleft palate or after palatal repair, and it can be addressed with speech therapy, prosthetic supports like a palatal lift, or surgical procedures to improve the seal.

The other options describe different issues: nasal obstruction from limited lateral airway openings, malocclusion from dental alignment problems, or hyponasal speech from excessive closure of the velopharyngeal port. None of these explain the nasal air escape and hypernasality that define velopharyngeal insufficiency.