VPI vs. VPD?
Heard the term VPD (Velopharyngeal Dysfunction) and found out that it’s a more general term that includes VP incompetence, insufficiency… Read below for more info if you’re interested! Mary Increasingly, speech scientists and surgeons have converted to using the term VPD in place of the older and more entrenched term VPI,[1, 2] which can be confusing because various authors use