CNIM Study guides, Class notes & Summaries

5-136 At what rate do skin cells exfoliate from OR personnel? A- 10,000 cells per hour B- 20,000 cells per hour C- 50,000 cells per hour D- 30,000 cells per hour - C- 50,000 cells per hour 5-152 After 100 averages, you have a signal to noise ratio of 2:1. How many averages would it take to increase the signal to noise ratio to 15:1? A- 10000 B- 5625 C- 900 D- 225 - B- 5625 5-214

_________________ is the single most important step taken to avoid contamination A 100/100 pts Using gloves Using protective eyewear Washing hands Using a transportation barrier - Washing hands A 100 mS epoch is recorded with a 10 mS post-stimulus triggering. Which of the following best describes the resulting sweep? A 110 mS sweep starting 10 mS prior to the stimulus A 90 mS sweep starting 10 mS after the stimulus A 100 mS sweep starting 10 mS prior to the stimulus A 100 mS sweep st...

"Central Cord Syndrome" results in: - Loss of function at the level damaged due to disruption of gray matter Harrington Instrumentation includes? - Rods A "MAC" (minimal alveolar concentration) is: - The concentration at which 1/2 of the subjects move in response to stimulation such as a surgical incision A contraindication for the use of transcranial magnetic stimulation is - A cardiac pacemaker in place A false negative test? - Means that the test results do not show an abnormality w...

0.1-10 uV - Electrical amplitude of SSEPs is A. 10-100 uV B. 0.1 to 10 uV C. 1000 to 10,000 uV D. 100 to 1000 uV 0.1-5000 Hz - What is the minimum required bandpass for an EP system 0.2ms - The duration of a monophasic, rectangular pulse used for somatosensory stimulation should be: A. 0.05 ms B. 0.2 ms C. 0.5 ms D. 1 ms 10 mS - What is the minimum analysis time for ABRs? 10 msec - What is the minimum acceptable sweep for ABRs? 10 uA - What is the maximum allowable leakage current ...

-70mV inside the cell - A typical resting membrane potential of a neuron is: 1 +20 mV inside the cell 2 -20 mV inside the cell 3 +70 mV inside the cell 4 -70 mV inside the cell .1 mA - What is the max allowable chassis leakage current? 1 10 uA 2 20 uA 3 .1 mA 4 10 mA 0.1 to 10 uV - Electrical amplitude of the SSEPs is: 1 0.1 to 10 uV 2 10 to 100 uV 3 100 to 1000 uV 4 1000 to 10,000 uV 0.3-70 Hz, 15 mm/sec, 3uV/mm - Of the following, the most appropriate filter, timebase, and sens...

___ clicks help resolve wave V of the BAEP - Condensation 60 HZ filters cause a change of latency by a: - a. phase shift 60. Reduction of the high frequency filter: - c. Increases evoked potential latency A "ground loop" is created when: - Two separate devices are attached to the same patient and have two separate grounding connections A BAEP reveals an interpeak latency of 2ms between waves I and III and an interpeak latency of 3.57 between waves III and V. Subsequently MRI detects a le...

_________________ is the single most important step taken to avoid contamination. A- Using a transportation barrier B- Using gloves C- Washing hands D- Using protective eyewear - C "Central cord syndrome" results in A- loss of function at the level damaged due to disruption of gray matter B- loss of function at the level damaged due to disruption of the dura mater C- loss of function at the level damaged due to disruption of the dorsal root ganglion D- loss of function at the level da...

"Signal-to-noise ratio" relates to which of the following? 1. The amplitude of the evoked response components to the amplitude of the unrelated components 2. The ability of the instrument to resolve data and noise vertically 3. Two inputs of a differential amplifier with like negativity 4. Sensitivity scaling - 1. The amplitude of the evoked response components to the amplitude of the unrelated components (Picture of activity in Orbicularis Oris and Orbicularis Oculi) What cranial nerve ...

A 10Hz signal passing through a 10Hz locut filter will be: A) Reduced in frequency to approximately 7hz B) Affected in no way C) Reduced in amplitude by approximately 30% D) Eliminated - C) Reduced in amplitude by approximately 30% A 60Hz notch filter should not be used for evoked potential recording because of: A) The ringing artifact that comes from distortion of the stimulus artifact B) Aliasing of the signal by the filter C) 60Hz interference coming from various OR equipment D) Comm...

A patient with a history of diabetes is likely to also have: - Peripheral Radiculopathy, increased upper, lower SSEPs A positive event occurring in the lead connected to the negative terminal, will result in a deflection - Downward A selective dorsal rhizotomy is associated with: - Cerebral palsy and the severing of posterior rootlets A small unilateral increase in latency at N10 peak during surgery may be attributed to: - A decrease in body temperature A stroke associated with a carotid...