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TCeMEP

Description

Certificate Practice Quizzes Quiz on TCeMEP, created by eds neuro on 23/03/2016.
eds neuro
Quiz by eds neuro, updated more than 1 year ago
eds neuro
Created by eds neuro over 8 years ago
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Resource summary

Question 1

Question
What has to be removed in order to place an epidural electrode?
Answer
  • lamina
  • pedicle

Question 2

Question
Stimulation of the cortex on an AWAKE patient is to test for:
Answer
  • identity
  • language

Question 3

Question
If a patient is unable to move at the end of the surgery, it is consistent with damage to the:
Answer
  • cortical spinal tracts
  • spinal thalamic

Question 4

Question
Isola:
Answer
  • rods and hooks
  • sublaminal wires

Question 5

Question
The best muscle to record lower TCeMEPs is:
Answer
  • ATB
  • FHL

Question 6

Question
The best time for a wake-up test during scoliosis surgery is after:
Answer
  • distraction
  • induction

Question 7

Question
The risk of the wake-up test includes:
Answer
  • derotation
  • extubation

Question 8

Question
What monitoring is best for a scoliosis surgery?
Answer
  • TCeMEP, SSEP, s-EMG, t-EMG
  • EEG, EMG

Question 9

Question
If you have to select only one modality during a scoliosis surgery, which one will you choose?
Answer
  • TCeMEP
  • SSEP

Question 10

Question
Vertebral arteries run from:
Answer
  • C2-C7
  • the basilar artery rostrally

Question 11

Question
What is the conduction time from stimulation at the lower thoracic spinal cord to a recording at the upper thoracic spinal cord?
Answer
  • less than 10 msec
  • more than 30 msec

Question 12

Question
What is the most likely outcome with an occlusion of the anterior spinal artery
Answer
  • loss of N13
  • lower extremity paralysis

Question 13

Question
After a thoracolumbar case, the patient wakes up with intact lower sensation and motor function, but left upper extremity weakness. What is the likely cause?
Answer
  • brachial plexopathy
  • thrombosis

Question 14

Question
The effects of Harrington rod distraction on the spinal cord can be tested by the following except:
Answer
  • the Stagnara wake-up test
  • dorsal root stimulation

Question 15

Question
Stimulation of the motor pathway can be achieved with little movement in the surgical field by:
Answer
  • slowing the stimulation rate
  • increasing the stimulation rate enough to produce muscle tetany

Question 16

Question
Following the final application of corrective forces to the spinal column, the spinal cord should typically be monitored for at least:
Answer
  • 5 minutes
  • 30 minutes

Question 17

Question
A contraindication for the use of transcranial electrical stimulation is
Answer
  • craniotomy
  • a cardiac pacemaker in place

Question 18

Question
The Luque type of spinal instrumentation usually involves:
Answer
  • the sublaminal wires
  • rods and screws

Question 19

Question
Luque rods would best be used for:
Answer
  • posterior spinal fixation
  • anterior cervical fusion stabilization

Question 20

Question
A "false negative" test means that the test results:
Answer
  • do not show an abnormality when a clinical abnormality is present
  • show an abnormality when no clinical abnormality exits

Question 21

Question
During scoliosis surgery, the spinal cord is most at risk for injury during:
Answer
  • hypotension induced by the anesthesiologist
  • spinal distraction and sublaminar wiring

Question 22

Question
For transcortical magnetic stimulation, it is not true that:
Answer
  • an electrical stimulator is required to pace the stimulus
  • the stimulation is not perceived as painful

Question 23

Question
Changing the inter stimulus interval (lSI) from 3.7 to 2.1 will:
Answer
  • increase the frequency of stimulation
  • decrease the frequency of stimulation

Question 24

Question
Motor evoked potentials are also known as:
Answer
  • cathodal stimulation
  • anodal stimulation

Question 25

Question
Motor evoked potentials can be recorded from the:
Answer
  • dermatomes
  • epidural space

Question 26

Question
Motor evoked potentials responses are affected by the:
Answer
  • rocuronium
  • ativan

Question 27

Question
The ideal anesthesia regimen for TCeMEP recording is:
Answer
  • 65% N20
  • TIVA

Question 28

Question
The epidural responses are also known as:
Answer
  • D and I waves
  • F and H waves

Question 29

Question
The motor evoked response in hand muscles (arrow) is referred as:
Image:
42ad03ed-301a-4f75-a87e-5c00305aaef4 (image/jpeg)
Answer
  • robust
  • clipping

Question 30

Question
The latency of the response in foot muscles is approximately:
Image:
da633d0c-aa14-4565-8f4e-d8b970806f64 (image/jpeg)
Answer
  • 40 ms
  • 22 ms

Question 31

Question
The responses in channel2 are classified as:
Image:
7b01e741-625e-40f6-a02d-aa6873586c74 (image/jpeg)
Answer
  • biphasic
  • polyphasic

Question 32

Question
When recording motor evoked potentials, the artifact reject should always be
Answer
  • turned off
  • turned on

Question 33

Question
The latency of D-wave responses in the upper cervical area is about:
Answer
  • 3 ms
  • 6 ms

Question 34

Question
D-wave responses are:
Answer
  • abolished at 1.2 MAC of anesthesia
  • not effected by anesthesia

Question 35

Question
An increase in anesthesia will result in a loss of the ___ response before the ____
Answer
  • I4, I3
  • I1, I2

Question 36

Question
The recommended range of inter stimulus interval for motor evoked potentials is:
Answer
  • 1.1 - 8.8
  • 1.9 - 3.9

Question 37

Question
The band pass setting for motor evoked potential should be set to:
Answer
  • 10-5000 Hz
  • 1 -1000Hz

Question 38

Question
The latency of D-wave responses in the lower cervical area is about:
Answer
  • 6 ms
  • 12 ms

Question 39

Question
The latency of D-wave responses in the lower thoracic area is about:
Answer
  • 9 ms
  • 15 ms

Question 40

Question
A response recorded at 15 ms from an epidural spinal electrode arises from:
Answer
  • the lower thoracic spine
  • para-spinal muscles

Question 41

Question
A motor unit originates from:
Answer
  • anterior horn cells
  • neuromuscular junction

Question 42

Question
The inter-peak latency between I-waves is:
Answer
  • 2.0 ms
  • 1.0 ms

Question 43

Question
The lowest spinal level for epidural recordings is:
Answer
  • T10
  • L2

Question 44

Question
Bite blocks must be used during motor evoked potential recordings to prevent
Answer
  • tongue bites
  • burns

Question 45

Question
When monitoring motor evoked potentials during spinal surgeries, the muscles selected must be ___ to the site of the surgery.
Answer
  • proximal
  • distal

Question 46

Question
Motor evoked potentials monitor the integrity of dorsal column pathways.
Answer
  • True
  • False

Question 47

Question
Ischemia of anterior spinal artery will result in loss of TCeMEP responses.
Answer
  • True
  • False

Question 48

Question
A pulse width of 1000 us is used for TCeMEP stimulation.
Answer
  • True
  • False

Question 49

Question
I-waves are epidural responses due to indirect stimulation of spinothalamic pathways.
Answer
  • True
  • False

Question 50

Question
Motor evoked potentials are generated from which type of summation?
Answer
  • Temporal
  • Spatial
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