Exam (elaborations)
CNIM Apparently On The Actual Test /169 Questions And Answers (A+)
- Institution
- CNIM Apparently On The Actual Test
CNIM Apparently On The Actual Test /169 Questions And Answers (A+)
[Show more]
Content preview
CNIM Apparently On The Actual Test /169 QuestionsAnd Answers (A+)
Quiz :An increase in stimulation intensity causes a linear increase of which of
the following SSEP components?
1. N20
2. N45
3. P31
4. P37 - √Answer :3. P31
Quiz :Epidural electrodes are made of platinum because
1. It is the most durable metal
2. It is the lowest impedance metal
3. The chance of allergic reaction is eliminated
4. Other metals may become toxic when currents are applied - √Answer :4.
Other metals may become toxic when currents are applied
Quiz :During a median nerve preoperative study, a patient has discomfort at
the wrist. Stimulation electrodes are 10 mm gold disk, stimulus intensity is 20
mA, and stimulus duration is 100 usec. Which of the following would most
likely reduce the patients discomfort while maintaining adequate stimulation?
1. Increase stimulus duration
2. Use larger stimulating electrode
3. Use smaller stimulating electrode
4. Decrease stimulus intensity below motor threshold - √Answer :2. Use larger
stimulating electrode
,Quiz :Which of the following would enhance wave I of the BAEP?
1. Increase the rate
2. Increase the intensity
3. Decrease the analysis time
4. Decrease the number of repetitions - √Answer :2. Increase the intensity
Quiz :In BAEPs, wave I can most easily be differentiated from cochlear
microphonics based upon
1. Amplitude
2. Morphology
3. Click polarity
4. Absence in contralateral recording - √Answer :3. Click polarity
Quiz :What is the interstimulus interval of a 50 Hz click stimulus?
1. 0.02 msec
2. 0.20 msec
3. 0.50 msec
4. 20.00 msec - √Answer :4. 20.00 msec
Quiz :Contralateral masking should be used during BAEPs to
1. Help the patient relax
2. Enhance wave I amplitude
3. Separate the IV/V complex
4. Prevent crossover responses - √Answer :4. Prevent crossover responses
Quiz :The complete absence of a BAEP is most likely the result of
1. Sedation
2. Multiple sclerosis
3. Severe hearing loss
4. A normal age variant - √Answer :3. Severe hearing loss
Quiz :Identification of wave V of the BAEP may require
1. Tympanic electrodes
2. Bilateral stimulation
3. Decreasing stimulus intensity
4. Use of a noncephalic reference - √Answer :3. Decreasing stimulus intensity
Quiz :In spinal surgery, the primary purpose of the popliteal fossa recording
electrode is to
1. Verify adequacy of stimulus
,2. Limit current spread
3. Confirm amplifier integrity
4. Provide evidence of a muscle twitch - √Answer :1. Verify adequacy of
stimulus
Quiz :while performing a posterior tibial SSEP, hypothermia of the lower
extremities is most likely to cause
1. Increased L3-P37 latency
2. Increased T12-P37 latency
3. Slowed peripheral conduction velocity
4. Abnormal prolongation of the P37-N45 complex - √Answer :3. Slowed
peripheral conduction velocity
Quiz :Which of the following peaks in tibial nerve SSEPs is most analogous to
P14 of median nerve SSEP?
1. N20
2. N34
3. P31
4. P37 - √Answer :3. P31
Quiz :Which of the following devices measures electrode resistance?
1. Ammeter
2. Ohmmeter
3. Voltmeter
4. Photometer - √Answer :2. Ohmmeter
Quiz :If an evoked potential has a voltage of 10 uV and the associated noise
has a voltage of 50 uV, what is the signal-to-noise ratio after 100 averaged
responses?
1. 1:1
2. 1:2
3. 2:1
4. 5:1 - √Answer :3. 2:1
Quiz :To display median nerve SSEP response as an upward deflection, which
of the following must be known?
1. Waveform polarity and latency of the response
2. Waveform polarity and polarity convention of the amplifier inputs
3. Polarity convention of amplifier inputs and amplitude of the response
, 4. Latency of the response and polarity convention of the amplifier inputs -
√Answer :2. Waveform polarity and polarity convention of the amplifier inputs
Quiz :If an amplifier is rated as having 120 dB common mode rejection ratio,
which of the following ratios of in-phase to out-of-phase signals would be
expected?
1. 10,000:1
2. 100,000:1
3. 500,000:1
4. 1,000,000:1 - √Answer :4. 1,000,000:1
Quiz :Which of the following cranial nerves innervated the extraocular
muscles?
1. Optic
2. Facial
3. Abducens
4. Trigeminal - √Answer :3. Abducens
Quiz :Which of the following is an example of an SSEP far-field subcortical
potential?
1. N20
2. N34
3. Erbs point
4. Popliteal fossa - √Answer :2. N34
Quiz :Which of the following opposes any change in current?
1. Capacitance
2. Impedance
3. Inductance
4. Resistance - √Answer :3. Inductance
Quiz :Which of the following electrode materials has little electrode potential
drift and a long time constant?
1. Tin
2. Gold
3. Silver
4. Stainless steel - √Answer :2. Gold
Quiz :Where should epidural electrodes be placed?
1. On the dura
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 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 HELLENAH. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £7.84. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
63613 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now