ASET CNIM ANSWERS AND QUESTIONS SET A+
✔✔Which of the following are most likely to cause airborne contamination in an OR
1. bloodborne pathogens
2. dust particles
3. kerrison particles
4. ventilation devices - ✔✔dust particles
✔✔Stimulus artifact during SSEPs can be decreased by:
1. keeping instrument away from florescent lights and video monitors
2. using enough muscle relaxant
3. separating stimulating cables from cables of other equipment
4. lowering the impedances of ground and stimulating electrodes - ✔✔lowering the
impedances of ground and stimulating electrodes
✔✔A decreasing body temp of the surgical patient monitored with EPs can result in
1. increasing latencies of SSEP and BAER
2. no changes
3. increased amplitude of SSEP cortical responses
4. higher electrode impedances - ✔✔increasing latencies of SSEP and BAER
✔✔A term used to describe very low currents that may be lethal to patients with
indwelling electrodes or catheters is
1. macroschock
2. ground loop
3. short circuit
4. microschock - ✔✔microschock
✔✔A recommendation to minimize stimulus artifact while recording the BAER in the OR
is to
, 1. use alternating clicks
2. use larger headphones
3. use rarefaction clicks
4. decrease the impedance of your stimulating electrodes - ✔✔use alternating clicks
✔✔To reduce artifact from electrode wire movement during surgery, it is best to
1. use long wires and tuck them under patient
2. braid the wires
3. loop the wires under the patients head
4. use only paste and gold disc electrodes - ✔✔braid the wires
✔✔_______________________________ is the single most important step taken to
avoid contamination
1. using gloves
2. using protective eyewear
3. washing hands
4. using transportation barrier - ✔✔Washing hands
✔✔An example of a non-physiologic artifact would be
1. high levels of muscle tension
2. electrical interference
3. ECG signal
4. slow signals due to perspiration - ✔✔electrical interference
✔✔A ground loop is created when
1. 2 separate devices are attached to the same patient and have 2 separate grounding
connections
2. 2 recording electrodes are connected to 2 separate input boxes of the same
instrument
3. patient is grounded by the large electrocautery ground that resembles a loop
4. separate equipment attached to the same patient have current-limiting grounds -
✔✔2 separate devices are attached to the same patient and have 2 separate grounding
connections
✔✔Universal precautions eliminate potential contact with body fluids that transmit
1. electrical current
2. bloodborne pathogens
✔✔Which of the following are most likely to cause airborne contamination in an OR
1. bloodborne pathogens
2. dust particles
3. kerrison particles
4. ventilation devices - ✔✔dust particles
✔✔Stimulus artifact during SSEPs can be decreased by:
1. keeping instrument away from florescent lights and video monitors
2. using enough muscle relaxant
3. separating stimulating cables from cables of other equipment
4. lowering the impedances of ground and stimulating electrodes - ✔✔lowering the
impedances of ground and stimulating electrodes
✔✔A decreasing body temp of the surgical patient monitored with EPs can result in
1. increasing latencies of SSEP and BAER
2. no changes
3. increased amplitude of SSEP cortical responses
4. higher electrode impedances - ✔✔increasing latencies of SSEP and BAER
✔✔A term used to describe very low currents that may be lethal to patients with
indwelling electrodes or catheters is
1. macroschock
2. ground loop
3. short circuit
4. microschock - ✔✔microschock
✔✔A recommendation to minimize stimulus artifact while recording the BAER in the OR
is to
, 1. use alternating clicks
2. use larger headphones
3. use rarefaction clicks
4. decrease the impedance of your stimulating electrodes - ✔✔use alternating clicks
✔✔To reduce artifact from electrode wire movement during surgery, it is best to
1. use long wires and tuck them under patient
2. braid the wires
3. loop the wires under the patients head
4. use only paste and gold disc electrodes - ✔✔braid the wires
✔✔_______________________________ is the single most important step taken to
avoid contamination
1. using gloves
2. using protective eyewear
3. washing hands
4. using transportation barrier - ✔✔Washing hands
✔✔An example of a non-physiologic artifact would be
1. high levels of muscle tension
2. electrical interference
3. ECG signal
4. slow signals due to perspiration - ✔✔electrical interference
✔✔A ground loop is created when
1. 2 separate devices are attached to the same patient and have 2 separate grounding
connections
2. 2 recording electrodes are connected to 2 separate input boxes of the same
instrument
3. patient is grounded by the large electrocautery ground that resembles a loop
4. separate equipment attached to the same patient have current-limiting grounds -
✔✔2 separate devices are attached to the same patient and have 2 separate grounding
connections
✔✔Universal precautions eliminate potential contact with body fluids that transmit
1. electrical current
2. bloodborne pathogens
