ASET CNIM COMPREHENSIVE ANSWERS AND
QUESTIONS SET A+
✔✔Well-maintained documentation is imperative throughout a surgical case in order to
1. provide details of events associated with a functional loss
2. require the technologist to focus on the operative procedure
3. justify billing for monitoring service
4. all of the above - ✔✔provide details of events associated with a functional loss
✔✔It is required that the monitoring tech be able to communicate effectively with
1. the surgical technologist
2. surgical residents
3. surgeon only
4. anesthesiologist and surgeon - ✔✔anesthesia and surgeon
✔✔With exposure provided by laminectomy, needle electrodes can record spinal
activity with placement
1. on the spinal cord
2. in the epidural space
3. in the pedicle
4. in the spinal muscle - ✔✔in the epidural space
✔✔To record the compound action potential of the median nerve intraoperatively, the
electrode should be placed at
1 antecubital fossa
2. the wrist
3. C2
4. the shoulder - ✔✔antecubital fossa
,✔✔An advantage to using grid or strip electrodes over the "crown of thorns" for
recording the ECoG is the ability to
1. place electrodes precisely on gyri
2. sterilize and reuse them
3. individually position each contact
4. slide them under the dura to unexposed areas - ✔✔slide them under the dura to
unexposed areas
✔✔Instrumentation systems used to distract, compress, and de-rotate the spine to
restore normal vertebral column alignment, include
1. Cotrel-Dubousset and Isola
2. CMRR and CMRO
3. Du Bois and Reymond
4. TCD and pedicle screw - ✔✔Cotrel-Dubousset and Isola
✔✔In order to monitor cranial nerve X, the recording electrodes are placed on the
1. trapezius muscle
2. soft palate
3. tongue
4. false vocal cords - ✔✔false vocal cords
✔✔The masking level suggested for the elimination of crossover responses is
1. 50 dB pe SPL
2. 60 dB nHL
3. 60 dB pe SPL
4. 50 dB Hl - ✔✔60 dB pe SPL
✔✔It is most appropriate to monitor the median nerve, not the tibial nerve, for
1. anterior cerebral artery aneurysms
2. middle cerebral artery aneuryms
3. posterior cerebral artery aneurysms
4. vertebral basilar artery aneurysms - ✔✔Middle cerebral artery aneurysms
✔✔What problem may occur when performing intraoperative BAERs using
compressible tubing and headphones
1. patients post-op hearing can become impaired
2. a contamination of the sterile field can occur
3. the compressible tubing can become obstructed and obscure the sound to the ear
, 4. their use may cause trauma to the ear canal and should be avoided -
✔✔Compressible tubing can become obstructed and obscure the sound to ear
✔✔An "after-discharge" can occur on the cortical EEG recording following
1. a seizure recorded in the OR
2. electrical stimulation of the exposed cortex
3. introduction of 60 Hz artifact
4. electrocautery - ✔✔electrical stimulation of the exposed cortex
✔✔For median nerve stim, the cathode is placed
1. between the tendons of palmaris longus and flexor carpi radialis muscle
2. on the dorsal side of wrist, approx 2-3cm from the ulnar nerve
3. 4-5 cm distal to anode
4. midway between the tendon and the posterior border of the medial malleolus -
✔✔between the tendons of palmaris longus and flexor carpi radialis muscle
✔✔During MVD surgery to relieve a hemifacial spasm
1. it is necessary to monitor EMG from CN III
2. a stimulation of CN VIII elicits a response from the mentalis muscle
3. the buccal branch of CN V will likely show the most EMG activity
4. Cz-Fpz should be monitored for median nerve stimulation - ✔✔stim of CN VII elicits a
response from the mentalis muscle
✔✔To minimize pain from stimulation during the recording of SSEPs, the contact
impedance of the stimulator should be
1. less than 50 kohms
2. more than 10,000 ohms
3. less than 5,000 ohms
4. less than 10 megohms - ✔✔less than 5,000 ohms
✔✔The effects of Harrington rod distraction on the spinal cord can be tested by all of
the following except
1. the stagnara wake-up test
2. SSEPs
3. MEPs
4. dorsal root stimulation - ✔✔dorsal root stimulation
✔✔It is important to begin monitoring EEG early during a carotid endarterectomy
1. to prevent the anesthesiologist from removing your electrodes
QUESTIONS SET A+
✔✔Well-maintained documentation is imperative throughout a surgical case in order to
1. provide details of events associated with a functional loss
2. require the technologist to focus on the operative procedure
3. justify billing for monitoring service
4. all of the above - ✔✔provide details of events associated with a functional loss
✔✔It is required that the monitoring tech be able to communicate effectively with
1. the surgical technologist
2. surgical residents
3. surgeon only
4. anesthesiologist and surgeon - ✔✔anesthesia and surgeon
✔✔With exposure provided by laminectomy, needle electrodes can record spinal
activity with placement
1. on the spinal cord
2. in the epidural space
3. in the pedicle
4. in the spinal muscle - ✔✔in the epidural space
✔✔To record the compound action potential of the median nerve intraoperatively, the
electrode should be placed at
1 antecubital fossa
2. the wrist
3. C2
4. the shoulder - ✔✔antecubital fossa
,✔✔An advantage to using grid or strip electrodes over the "crown of thorns" for
recording the ECoG is the ability to
1. place electrodes precisely on gyri
2. sterilize and reuse them
3. individually position each contact
4. slide them under the dura to unexposed areas - ✔✔slide them under the dura to
unexposed areas
✔✔Instrumentation systems used to distract, compress, and de-rotate the spine to
restore normal vertebral column alignment, include
1. Cotrel-Dubousset and Isola
2. CMRR and CMRO
3. Du Bois and Reymond
4. TCD and pedicle screw - ✔✔Cotrel-Dubousset and Isola
✔✔In order to monitor cranial nerve X, the recording electrodes are placed on the
1. trapezius muscle
2. soft palate
3. tongue
4. false vocal cords - ✔✔false vocal cords
✔✔The masking level suggested for the elimination of crossover responses is
1. 50 dB pe SPL
2. 60 dB nHL
3. 60 dB pe SPL
4. 50 dB Hl - ✔✔60 dB pe SPL
✔✔It is most appropriate to monitor the median nerve, not the tibial nerve, for
1. anterior cerebral artery aneurysms
2. middle cerebral artery aneuryms
3. posterior cerebral artery aneurysms
4. vertebral basilar artery aneurysms - ✔✔Middle cerebral artery aneurysms
✔✔What problem may occur when performing intraoperative BAERs using
compressible tubing and headphones
1. patients post-op hearing can become impaired
2. a contamination of the sterile field can occur
3. the compressible tubing can become obstructed and obscure the sound to the ear
, 4. their use may cause trauma to the ear canal and should be avoided -
✔✔Compressible tubing can become obstructed and obscure the sound to ear
✔✔An "after-discharge" can occur on the cortical EEG recording following
1. a seizure recorded in the OR
2. electrical stimulation of the exposed cortex
3. introduction of 60 Hz artifact
4. electrocautery - ✔✔electrical stimulation of the exposed cortex
✔✔For median nerve stim, the cathode is placed
1. between the tendons of palmaris longus and flexor carpi radialis muscle
2. on the dorsal side of wrist, approx 2-3cm from the ulnar nerve
3. 4-5 cm distal to anode
4. midway between the tendon and the posterior border of the medial malleolus -
✔✔between the tendons of palmaris longus and flexor carpi radialis muscle
✔✔During MVD surgery to relieve a hemifacial spasm
1. it is necessary to monitor EMG from CN III
2. a stimulation of CN VIII elicits a response from the mentalis muscle
3. the buccal branch of CN V will likely show the most EMG activity
4. Cz-Fpz should be monitored for median nerve stimulation - ✔✔stim of CN VII elicits a
response from the mentalis muscle
✔✔To minimize pain from stimulation during the recording of SSEPs, the contact
impedance of the stimulator should be
1. less than 50 kohms
2. more than 10,000 ohms
3. less than 5,000 ohms
4. less than 10 megohms - ✔✔less than 5,000 ohms
✔✔The effects of Harrington rod distraction on the spinal cord can be tested by all of
the following except
1. the stagnara wake-up test
2. SSEPs
3. MEPs
4. dorsal root stimulation - ✔✔dorsal root stimulation
✔✔It is important to begin monitoring EEG early during a carotid endarterectomy
1. to prevent the anesthesiologist from removing your electrodes
