Exam (elaborations)
Cnim Test 2 Questions And Answers With Verified Solutions Already Passed!!!(GRADED A+)
- Course
- Institution
Cnim Test 2 Questions And Answers With Verified Solutions Already Passed!!!(GRADED A+)
[Show more]
Content preview
Cnim Test 2 Questions And AnswersWith Verified Solutions Already
Passed!!!(GRADED A+)
Instrumentation systems used to distract, compress, and de-rotate the spine to
restore normal vertebral column alignment, include: - ANSWER✔✔ Cotrel-
Dubousset and ISOLA
The resting membrane potential is created by differences between the inside and
outside of the cell in ion concentrations of - ANSWER✔✔ K+, Na+, and Cl-
If all channels are showing excessive 60 Hz noise, what should you do? -
ANSWER✔✔ Check your ground impedance
A grounding device must be available so that, under normal conditions, no
voltage greater than is measured across an impedance of 1000 ohms -
ANSWER✔✔ 20 mV rms at 60 Hz
For median nerve stimulation, the cathode is placed - ANSWER✔✔ between the
tendons of palmaris longus and flexor carpi radialis muscle
Sensation level (SL) is defined by - ANSWER✔✔ An individual's hearing threshold
When using a bipolar montage during EEG recording, the localizing sign is -
ANSWER✔✔ A phase reversal between adjacent channels having a common
electrode
,When is the latest acceptable time during a surgery to begin monitoring? -
ANSWER✔✔ Before any surgical manipulations which place neural structure at
risk
How many waves of a 60 Hz signal should you see in a 100 msec sweep? -
ANSWER✔✔ 6
A goal of intraoperative monitoring of the sensory pathways is to - ANSWER✔✔
detect abnormalities (electrophysiologic changes) that develop as the recordings
are taken
The use of ER insert earphones results in - ANSWER✔✔ separating wave 1 from
the stimulus artifact
Sublaminar wires are typically used to apply what type of corrective force to the
spinal column? - ANSWER✔✔ translation
The recommended criteria for surgeon notification when monitoring BAEPs
intraoperatively include an increase in - ANSWER✔✔ the latency of wave V of
>1.0 msec or the disappearance of wave V
The ulnar nerve originates from nerve roots at - ANSWER✔✔ C7-T1
If you observe a significant change in the responses what is the first think you
must do? - ANSWER✔✔ Inform the surgeon
,Direct focal electrical stimulation of a peripheral nerve lesion will - ANSWER✔✔
more precisely localize the distribution of intact conducting nerve fibers
Spondylolisthesis - ANSWER✔✔ vertebral displacement
Synaptic transmission, and/or changes in the thalamocortical projections, are
believed to produce - ANSWER✔✔ cortical potentials
For spinal cord monitoring using SSEPs, epidural electrodes should be placed: -
ANSWER✔✔ rostral to the surgical site
Which of the following potentials will reverse the click polarity? - ANSWER✔✔
Cochlear microphonic
An optimal repetition rate for intraoperative BAEPs is: - ANSWER✔✔ 31 Hz
Signal to noise ratio relates to which of the following? - ANSWER✔✔ The
amplitude of the evoked response components to the amplitude of the unrelated
components
What significant EEG change would you expect to see with ischemia due to
carotid clamping - ANSWER✔✔ Increased slow activity
Nerves of the body, such as the ulnar, median, and femoral, are formed from the -
ANSWER✔✔ dorsal and ventral rami
, which of the following will most likely result in abnormal PTN responses? -
ANSWER✔✔ Positive babinski sign
A 60 Hz artifact will most likely be caused by: - ANSWER✔✔ Microscope
During scoliosis surgery, the spinal cord is most at risk for injury - ANSWER✔✔
during spinal distraction and sublaminar wiring
When monitoring somatosensory evoked potentials during a critical moment in
an intraoperative study, changing the setting of the high-frequency filter -
ANSWER✔✔ may lead to a false interpretation of the data
The purpose of preoperative evoked potential testing is to - ANSWER✔✔
compare to post-induction responses
Facial nerve EMG responses are best recorded from - ANSWER✔✔ orbicularis oris
and orbicularis oculi muscles
Severe hypothermia - ANSWER✔✔ increases evoked potential latencies
Functional cortical stimulation is used to localize brain areas that must be -
ANSWER✔✔ preserved during resection
Electrode gel in between anode and cathode of the stimulating electrodes results
in: - ANSWER✔✔ salt bridge
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller classhub. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
62890 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now