CNIM Practice Questions – Comprehensive
Certification Exam Preparation
Frequency bursts on sustained high frequency discharges observed during spontaneous EMG monitoring
may indicate what?
Postoperative weakness or postoperative paralysis
With a sampling rate of 10 kHz the shortest sine wave resolved would be:
0.2 msec
The amplifier input impedance (not the electrode impedance) of a differential amplifier must be at least:
10 megohms
General anesthetics are thought to act on synaptic receptors and altering ionic channels that result in
amplitude depression of evoked responses with lesser effects on latency. Action at which of the
following receptors or channels would cause latency changes?
Sodium channel
What is an uncommon side effect of propofol?
Lactic acidosis
Successful surgical outcomes from tethered cord release are approximately:
89%
In analog to digital conversion, the difference between the "real" analog signal and the digitized signal is
called
,CNIM Practice Questions – Comprehensive
Certification Exam Preparation
Quantization error
The "MAC" of an anesthetic agent is:
the concentration of an inhalational agent where 50% don't move with incision
Why is it important to monitor upper SSEPs for a lumbar surgery?
It may identify positional changes and is a good control for anesthesia's impact on waveforms
What is true Anterior Cord Syndrome?
Loss of motor function and often involves Anterior Spinal Artery ischemia
The microscope, the fluid warmer, and the cell saver are all possible sources of:
60 Hz electrical noise
H-Reflex which is not present at first can be activated sometimes by increasing the duration of the
stimulus or repositioning the limb. (true or false)
True
In order to stimulate both tibial nerves asynchronously, you need:
to delay the second stimulator
,CNIM Practice Questions – Comprehensive
Certification Exam Preparation
Following the final application of corrective forces to the spinal column, the spinal cord should typically
be monitored for at least:
30 min
Anesthesia "induction" is the:
time when the initial anesthesia drugs are given to get the patient to sleep
Where are compound muscle action potentials (CMAP) recorded?
muscle
The posterior tibial nerve arises from which branch of the sciatic nerve?
Superior Tibial
Muscle relaxants are classified by their mechanism of action at the myoneural junction as belonging one
of the following two groups, which are:
Depolarizing and Nondepolarizing
What is the primary recording location when monitoring CNV?
Masseter Muscle
A Carotid Endarterectomy is performed to remove _____ from the artery.
Plaque
, CNIM Practice Questions – Comprehensive
Certification Exam Preparation
The anterior vasculature of the spine is at greatest risk during which of the following?
anterior surgery in the thoracic spine
The process of converting an analog signal into a digital domain is called ______.
Sampling
When using a bipolar montage during EEG recording, the localizing sign is:
a phase reversal between adjacent channels having a common electrode
All real signals can be made up of an infinite number of sinusoidal waves of varying phase, amplitude
and frequency. (true or false)
true
Arise from direct stimulation of the pyramidal neuron axons that leave the cortex and comprise the
corticospinal tract.
D-waves
Arise from the possibility of stimulating pyramidal neurons after a variable number of synapses
multiple I waves
Certification Exam Preparation
Frequency bursts on sustained high frequency discharges observed during spontaneous EMG monitoring
may indicate what?
Postoperative weakness or postoperative paralysis
With a sampling rate of 10 kHz the shortest sine wave resolved would be:
0.2 msec
The amplifier input impedance (not the electrode impedance) of a differential amplifier must be at least:
10 megohms
General anesthetics are thought to act on synaptic receptors and altering ionic channels that result in
amplitude depression of evoked responses with lesser effects on latency. Action at which of the
following receptors or channels would cause latency changes?
Sodium channel
What is an uncommon side effect of propofol?
Lactic acidosis
Successful surgical outcomes from tethered cord release are approximately:
89%
In analog to digital conversion, the difference between the "real" analog signal and the digitized signal is
called
,CNIM Practice Questions – Comprehensive
Certification Exam Preparation
Quantization error
The "MAC" of an anesthetic agent is:
the concentration of an inhalational agent where 50% don't move with incision
Why is it important to monitor upper SSEPs for a lumbar surgery?
It may identify positional changes and is a good control for anesthesia's impact on waveforms
What is true Anterior Cord Syndrome?
Loss of motor function and often involves Anterior Spinal Artery ischemia
The microscope, the fluid warmer, and the cell saver are all possible sources of:
60 Hz electrical noise
H-Reflex which is not present at first can be activated sometimes by increasing the duration of the
stimulus or repositioning the limb. (true or false)
True
In order to stimulate both tibial nerves asynchronously, you need:
to delay the second stimulator
,CNIM Practice Questions – Comprehensive
Certification Exam Preparation
Following the final application of corrective forces to the spinal column, the spinal cord should typically
be monitored for at least:
30 min
Anesthesia "induction" is the:
time when the initial anesthesia drugs are given to get the patient to sleep
Where are compound muscle action potentials (CMAP) recorded?
muscle
The posterior tibial nerve arises from which branch of the sciatic nerve?
Superior Tibial
Muscle relaxants are classified by their mechanism of action at the myoneural junction as belonging one
of the following two groups, which are:
Depolarizing and Nondepolarizing
What is the primary recording location when monitoring CNV?
Masseter Muscle
A Carotid Endarterectomy is performed to remove _____ from the artery.
Plaque
, CNIM Practice Questions – Comprehensive
Certification Exam Preparation
The anterior vasculature of the spine is at greatest risk during which of the following?
anterior surgery in the thoracic spine
The process of converting an analog signal into a digital domain is called ______.
Sampling
When using a bipolar montage during EEG recording, the localizing sign is:
a phase reversal between adjacent channels having a common electrode
All real signals can be made up of an infinite number of sinusoidal waves of varying phase, amplitude
and frequency. (true or false)
true
Arise from direct stimulation of the pyramidal neuron axons that leave the cortex and comprise the
corticospinal tract.
D-waves
Arise from the possibility of stimulating pyramidal neurons after a variable number of synapses
multiple I waves
