How to prepare the patient for cVEMP testing

10 January 2024
10 mins


Before you start testing, instruct the patient to turn off all their electronic devices in order to minimize noise.

Now, look in your patient's ear to ensure no excess cerumen is present.

Clean the patient's skin with abrasive gel before placing the electrodes.

Ensure equal placement of the reference electrodes.

Place a hand under the patient's chin.

Ask them to turn their head.

And where your hand lines up on the SCM muscle - this is where you place your reference electrode.

Place the ground electrode on the patient's low forehead and place the vertex electrode between the patient's clavicles.

Mount your cables and ensure that they are placed correctly.

Now test the impedance.

Impedances below five kiloohms are acceptable.

It's important that there is no more than two kiloohms of imbalance in impedances between electrodes.

Instruct the patient to turn their head to keep a constant contraction of the sternocleidomastoid muscle during testing.

Consult the EMG monitor in the Eclipse software for guidance.

Insert the transducers and start testing.



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