CNIM PRACTICE EXAM 1 2023 with Complete Solutions

CNIM PRACTICE EXAM 1 2023 with Complete Solutions 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? - ANSDecrease number of repetitions What is not an advantage of epidural recordings? - ANSAbsence of significant artifact The stimulation rate is determined by the - ANSanalysis time Somatosensory evoked potentials are less reliable in patients with ? - ANSNeuromuscular disease When placing PTN stimulator you should not - ANSSecure 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: - ANSA downward peak of 0.6V The lumbar potential is generated from - ANSPost-synaptic responses The P31 response to posterior tibial nerve stimulation - ANSIs recordable over a generalized region of scalp Which of the following has the greatest effect on SEP monitoring? - ANSSevoflurane A shocking sensation that occurs throughout the body during neck flexion is called - ANSL'Hermittes sign Lowering the SSEP hicut filter from 500 Hz to 200 Hz may cause the cortical peaks to: - ANSAppear longer in latency How many waves of a 60 Hz signal should you see in a 250 mS sweep? - ANS15 Activation of an action potential of a neuron will depend on: - ANSIts membrane potential based on the spatiotemporal summation of its excitatory and inhibitory inputs From left to right pre-auricular points is measured 30 cm. The C3 electrode is located: - ANS9 cm medial to the left pre-auricular point The most frequent source of patient infection in the operating room derives from: - ANSThe patient's own endogenous flora What is the maximum time in which to expect EEG changes following cross clamping of the carotid? - ANSTwo minute