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02-HandoutsResonanceandVPD - Cook Children's

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Causes of VP Incompetence<br />

• Cranial nerve damage<br />

• Central neurological dysfunction<br />

– Injury or neuromuscular disease<br />

Cranial Nerve Damage<br />

• Can cause velar paralysis or<br />

paresis<br />

• Often unilateral<br />

• Affected side of velum<br />

droops, causing a lateral gap<br />

• Uvula points to unaffected<br />

side<br />

• Common in hemifacial<br />

microsomia<br />

35

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