Exam Preview for 36439: IONM During ENT Procedures

IONM During ENT Procedures - Mastoidectomy, Vestibular and Tumor Excision

Please note: exam questions are subject to change.

1. IONM could provide “value” during which of the following procedures? PE tube placement Excision of facial hemangioma Cleft palate repair Tonsillectomy
2. During Mastoidectomy which cranial nerve could be at risk VIII - Auditory X - Vagus V - Trigeminal VII - Facial
3. During Repair of Semicircular Canal Dehiscence which electrophysiological test is utilized for guidance of the repair Electrocochleography (EcochG) Auditory Brainstem Response (ABR) Electroneuronography (ENoG) Somatosensory Evoked Potentials (SSEP)
4. During posterior fossa tumor excision, which modalities would provide optimal protection for the patient’s neurologic function? Electrocochleography (EcochG), Auditory Brainstem Response (ABR) & Transcranial Electrical Motor Evoked Potentials (tcMEPs) Auditory Brainstem Response (ABR) alone Somatosensory Evoked Potentials (SSEP), Electromyography (EMG), Transcranial Electrical Motor Evoked Potentials (tcMEPs) & Auditory Brainstem Response (ABR) Electromyography (EMG) & Electrocochleography (EcochG) & Electroneuronography (ENoG)
5. During a craniotomy to remove a brainstem tumor, the surgeon elects to use a translabyrinthine approach which modality would be most affected (or rendered useless)? Electromyography (EMG) Auditory Brainstem Response (ABR) Transcranial Electrical Motor Evoked Potentials (tcMEPs) Somatosensory Evoked Potentials (SSEP)