Latest Final Exam: California Life,
Accident, and Health Insurance with complete solution
Question : An increase in stimulation intensity causes a linear
increase of which of the following SSEP components?
1. N20
2. N45
3. P31
4. P37
Correct answer: 3. P31
Question : Epidural electrodes are made of platinum because
- It is the most durable metal
- It is the lowest impedance metal
- The chance of allergic reaction is eliminated
- Other metals may become toxic when currents are applied
Correct answer: 4. Other metals may become toxic when
currents are applied
Question : During a median nerve preoperative study, a
patient has discomfort at the wrist. Stimulation electrodes are 10 mm gold disk, stimulus intensity is 20 mA, and stimulus duration is 100 usec. Which of the following would most likely reduce the patients discomfort while maintaining adequate stimulation?
- Increase stimulus duration
- Use larger stimulating electrode
- Use smaller stimulating electrode
- Decrease stimulus intensity below motor threshold
Correct answer: 2. Use larger stimulating electrode
Question : Which of the following would enhance wave I of
the BAEP?
- Increase the rate
- Increase the intensity
- Decrease the analysis time
- Decrease the number of repetitions
Correct answer: 2. Increase the intensity
Question : In BAEPs, wave I can most easily be differentiated
from cochlear microphonics based upon
- Amplitude
- Morphology
- Click polarity
- Absence in contralateral recording
Correct answer: 3. Click polarity
Question : What is the interstimulus interval of a 50 Hz click
stimulus?
- 0.02 msec
- 0.20 msec
- 0.50 msec
- 20.00 msec
Correct answer: 4. 20.00 msec
Question : Contralateral masking should be used during
BAEPs to
- Help the patient relax
- Enhance wave I amplitude
- Separate the IV/V complex
- Prevent crossover responses
Correct answer: 4. Prevent crossover responses
Question : The complete absence of a BAEP is most likely the
result of
- Sedation
- Multiple sclerosis
- Severe hearing loss
- A normal age variant
Correct answer: 3. Severe hearing loss
Question : Identification of wave V of the BAEP may require
- Tympanic electrodes
- Bilateral stimulation
- Decreasing stimulus intensity
- Use of a noncephalic reference