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CNIM Questions And Answers With Verified Solutions Rated A+ Latest Updated 2024
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CNIM Questions And Answers With Verified Solutions Rated A+ Latest Updated 2024
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CNIM Questions And Answers WithVerified Solutions Rated A+ Latest
Updated 2024
When recording TOF from PTN at ankle, which muscle is best to record response?
- ANSWER✔✔ abductor hallucis
What procedure may be done to reduce muscle spasticity? - ANSWER✔✔
selective dorsal root rhizotomy
Identify EMG activity red arrow - ANSWER✔✔ neurotonic discharges
Anterior horn cells are also called - ANSWER✔✔ Alpha motor neurons
What is most appropriate drug to use at induction when monitoring s-EMG? -
ANSWER✔✔ Succinylcholine
Foot drop is caused by an injury to - ANSWER✔✔ Peroneal nerve
Best muscle to record sEMG for S2-S4 procedure is - ANSWER✔✔ Anal sphincter
Release of tethered cord is performed by identifying and sectioning - ANSWER✔✔
Filum terminale
,Metal artifact is seen when metal instrument touches the nerve directly. True or
False? - ANSWER✔✔ False - it is when two dissimilar metals touch each other in
exposed spine
Which muscle is innervated by C7 nerve root - ANSWER✔✔ Triceps brachii
Best muscles for L4-S1 pedicle screw stim would be? - ANSWER✔✔ Tibialis
anterior (L4-S1) and gastrocnemius (S1-S2)
Compression or sustained traction of a nerve will be present in sEMG as -
ANSWER✔✔ Train EMG
What is max current that can be applied for indirect CN stimulation? -
ANSWER✔✔ 2.0 mA
Very high threshold for all pedicle screws could be because of - ANSWER✔✔
Muscle relaxant, current shunting, and anodal stimulation - require higher
threshold to stim screws and nerves
Which muscle is innervated by C5? - ANSWER✔✔ Deltoid
Stimulation of L4 screw has lateral cortical bone breach that will create CMAP in
what muscle? - ANSWER✔✔ Tibialis anterior
Train activity may be caused by - ANSWER✔✔ Cold irrigation
,Lumbar pedicle screw with bone breach will have threshold of - ANSWER✔✔
Lower than 5 mA
Many nerve roots exit at lower part of the spinal cord called? - ANSWER✔✔
Cauda equina , spinal cord ends at upper lumbar
Spina bifida - ANSWER✔✔ Birth defect in baby that occurs when spine and spinal
cord do not develop completely
Which muscle would be best to record response when stim median nerve at
wrist? - ANSWER✔✔ Abductor pollicis brevis
C8 nerve root exits spinal cord at which level? - ANSWER✔✔ Below C7 vertebrae
What are the different types of normal and abnormal EMGs in the OR? -
ANSWER✔✔ Spike, burst, train, neurotonic discharge, irregular (patient getting
light), metal artifact
Wrist drop caused by injury to - ANSWER✔✔ Radial nerve
sEMG observed in all channels is probably due to - ANSWER✔✔ patient waking up
Innervation for peroneus longus muscle - ANSWER✔✔ L5, S1
Recommended bandpass for EMG monitoring is - ANSWER✔✔ 10-30 Hz to 16000
Hz
, Max current for DIRECT CN stimulation - ANSWER✔✔ 1.0 mA
Tapered tip of spinal cord is known as - ANSWER✔✔ Conus medullaris
What type of EMG is seen in image - ANSWER✔✔ Bs-train ???
Integrity of peripheral can be determined by - ANSWER✔✔ Distal CMAP
responses
Luque rods best used for - ANSWER✔✔ Posterior spinal fixation
Pedicle screw stim probe should be plugged into which output of stimulator box?
- ANSWER✔✔ Cathode
Monopolar nerve stim is LESS - ANSWER✔✔ Specific
Which muscle is innervated by L2-L4 - ANSWER✔✔ Vastus medialis/lateralis
(quadriceps)
Traction on neural tissues during surgery causes - ANSWER✔✔ Train
activity/neurotonic discharges
Stimulation of dorsal rootlets for SDR is done with stimulation frequency of -
ANSWER✔✔ 50 Hz
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