CNIM Practice Exam 1 questions with correct answers

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 μsec. Which of the following would most likely reduce the patient's discomfort while maintaining adequate stimulation? - Answer Decrease number of repetitions What is not an advantage of epidural recordings? - Answer Absence of significant artifact The stimulation rate is determined by the - Answer analysis time Somatosensory evoked potentials are less reliable in patients with ? - Answer Neuromuscular disease When placing PTN stimulator you should not - Answer Secure the tape and bands around the whole ankle A differential amplifier with a Gain of 1,000,000 has a 0.2 μV signal at its positive input and a 0.8 μV signal at its negative input. The output will be: - Answer A downward peak of 0.6V The lumbar potential is generated from - Answer Post-synaptic responses The P31 response to posterior tibial nerve stimulation - Answer Is recordable over a generalized region of scalp