CNIM PRACTICE EXAM QUESTIONS 2023.

ANASTAMOSIS? - -CONNECTION or opening BETWEEN two things (especially cavities or passages) that are normally diverging or branching, such as between blood vessels. -COMMUNICATION BETWEEN ARTERIES What causes the most airborne bacteria in OR? a. blood on gown b. blood spill c. skin shed d. patient vent - c. skin shed Nerve that innervates 4th and 5th fingers? - Ulnar Nerve Problem with Bilateral Synchronus Stim? - Can mask unilateral problems No N20 at baseline could mean? - Stroke What should you check 1st if you lose all waves? - Stimulator Which of the following devices measures electrode resistance? 1. Ammeter 2. Ohmmeter3. Voltmeter 4. Photometer - 2. Ohmmeter If an evoked potential has a voltage of 10uV and the associated noise has a voltage of 50uV, what is the signal to noise ratio after 100 averaged responses? 1. 1:1 2. 1:2 3. 2:1 4. 5:1 - 3. 2:1 To display median nerve SSEP response as an upward deflection, which of the following must be known? 1. Waveform polarity and latency of the response 2. Waveform polarity and polarity convention of the amplifier inputs 3. Polarity convention of amplifier inputs and amplitude of the response 4. Latency of the response and polarity convention of the amplifier inputs - 2. Waveform polarity and polarity convention of the amplifier inputs If an amplifier is rated as having 120 dB common mode rejection rate, which of the following ratios of in-phase to out-of-phase signals would be expected? 1. 10,000:1 2. 100,000:1 3. 500,000:1 4. 1,000,000:1 - 4. 1,000,000:1Which of the following cranial nerves innervates the extraocular muscles? 1. Optic 2. Facial 3. Abducens 4. Trigeminal - 3. Abducens Which of the following is an example of a SSEP far-field subcortical potential? 1. N20 2. N34 3. Erbs point 4. Popliteal Fossa - 2. N34 Which of the following opposes any change in current? 1. Capacitance 2. Impedance 3. Inductance 4. Resistance - 3. Inductance Which of the following electrode materials has little electrode potential drift and a long time constant? 1. Tin2. Gold 3. Silver 4. Stainless Steel - 2. Gold Where should epidural electrodes be placed? 1. On the dura 2. In the spinal cord 3. Within the dural membrane 4. Between the dura and the spinal cord - 1. on the dura With referential recording, maximal amplitude cortical evoked potentials following stimulation of the left posterior tibial nerve usually would be found between? 1. C3 and CZ 2. C4 and P4 3. FZ and CZ 4. C4 and CZ - 1. C3 and CZ