Evoked Potential monitoring

Question 1

SSEP:

the critical recording electrode is placed ______ to record tibial nerve evoked potential?

Answer 1

midline

Question 2

SSEP:

The critical recording electrode is placed ___ for ulna and median nerve evoked potentials

Answer 2

laterally

Question 3

SSEP:
For sensory evoked potentials, the stimulating electrodes are placed _______ and the detecting electrodes are placed _____

Answer 3

peripherally

centrally

Question 4

with amplitude an (increase or decrease) of the SSEP suggest that damage is occurring in the neural pathway?

Answer 4

Decrease

Question 5

With latency and (increase or decrease ) of the SSEP suggest that damage in occurring the the neural pathway

Answer 5

Increase

Question 6

SSEP monitoring assess the integrity of the ____ cord only?

Answer 6

posterior

Question 7

Since SSEP monitoring only asses the integrity of the posterior cord. What monitors the Anterior cord

Answer 7

MEPs

Question 8

SSEP is elected by repetitive stimulation of what nerves

Answer 8

tibia
Median
ulnar

Question 9

SSEP is useful for monitoring function of the dorsal spinal cord or brain during what surgeries?

Answer 9

Spinal cord
endartectomy
Aortic
Intracranial aneurysms

Question 10

Brainstem Auditory evoked potentials (BAEP) is elicited how?

Answer 10

auditory clicks

Question 11

BAEP is useful in what surugeries

Answer 11

any involving CN VIII

Question 12

BAEP monitor what CN

Answer 12

VIII

Question 13

Visual evoked potentials (VEP) elicited how

Answer 13

by flashes of light

Question 14

VEPs are useful in surgeries near what nerve

Answer 14

optic

Question 15

VEPs are used for what surgery

Answer 15

trans-sphenoidal approach to anterior pituitary tumor

Question 16

VEPs monitor what CN

Answer 16

II (Optic)

Question 17

list the evoked potentials in order from most to least sensitive to anesthetics (AKA- the anesthetics decrease the amplitude and increase the latency the most)

Answer 17

VEPs (V-very sensitive)
SSEP / MEPs (S- somewhat sensitive)
BAEP (B- Barely sensitive)

Question 18

SSEPs are recorded from an electrode placed the ________ if the tibial nerve is stimulated bilaterally

Answer 18

longitudinal sulcus

Question 19

if during a harrington rod procedure the amplitude of the SSEP decreases and the Latency increases, damage to what area of the spinal cord may have occured

Answer 19

Posterior