Gag Throat Reflex
Definition: The gag reflex evaluates the integrity of Cranial nerves IX and X (The glossopharyngeal and vagus nerves)
Test procedure Using a long handle swab stick (orange swab) gently and briskly touch the pharyngeal wall behind the pillars of the fauces.
Test findings A positive gag reflex will produce a non symmetrical elevation of the uvula or the fauces. The deviation will take place towards the weak or affected side indicating a contralateral lesion of the vagus nerve. If there is no movement of the uvula with the gag reflex and with saying 'ahh' this may signify bilateral palatal muscle paralysis. If however on saying 'ahh' there is elevation of the uvula but not with the gag reflex this indicates lesion with the glossopharyngeal nerve.
In a negative or normal gag reflex there will be a symmetrical elevation of the uvula or the fauces / tonsilar arches.
Considerations: If you haven't got clear access to the throat use a wooden spatula to depress the tongue. If no reflex is observed ensure that you are actually touching the right area as described above.