CNIM Test V Questions With Complete Solutions

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 correct answer: C- 50,000 cells per hour 5-214 When is it most appropriate to alert the surgeon of a problem with the monitoring? A- When any change occurs B- After a loss of 30% and 5% latency C- After all waveforms are lost D- After a loss of 55% amplitude correct answer: D- After a loss of 55% amplitude 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 correct answer: B- 5625 Your evoked potential is squaring on the screen. Which of the following will best address this problem? A- Increase sensitivity to 100 uV/div B- Decrease sensitivity to 25 uV/div C- Increase sensitivity to 25 uV/div D- Decrease sensitivity to 100 uV/div correct answer: D- Decrease sensitivity to 100 uV/div Which of the following is most likely to cause a false negative for a thoracolumbar fusion? A- Bilateral asynchronous stimulation of sural nerve B- Bilateral asynchronous stimulation of posterior tibial nerve C- Bilateral synchronous stimulation of posterior tibial nerve D- Bilateral asynchronous stimulation of peroneal nerve correct answer: C- Bilateral synchronous stimulation of posterior tibial nerve What is the recommended impedance of surface electrodes for SSEP recording? A- Less than 5000 Ohms B- At least 10 Megaohms C- Ohms D- 0.5 Ohms or less correct answer: A- Less than 5000 Ohms