CNIM Test 2| 247 Questions| With Complete Solutions

Instrumentation systems used to distract, compress, and de-rotate the spine to restore normal vertebral column alignment, include: correct answer: Cotrel-Dubousset and ISOLA The resting membrane potential is created by differences between the inside and outside of the cell in ion concentrations of correct answer: K+, Na+, and Cl- If all channels are showing excessive 60 Hz noise, what should you do? correct answer: Check your ground impedance A grounding device must be available so that, under normal conditions, no voltage greater than is measured across an impedance of 1000 ohms correct answer: 20 mV rms at 60 Hz For median nerve stimulation, the cathode is placed correct answer: between the tendons of palmaris longus and flexor carpi radialis muscle Sensation level (SL) is defined by correct answer: An individual's hearing threshold When using a bipolar montage during EEG recording, the localizing sign is correct answer: A phase reversal between adjacent channels having a common electrode When is the latest acceptable time during a surgery to begin monitoring? correct answer: Before any surgical manipulations which place neural structure at risk How many waves of a 60 Hz signal should you see in a 100 msec sweep? correct answer: 6 A goal of intraoperative monitoring of the sensory pathways is to correct answer: detect abnormalities (electrophysiologic changes) that develop as the recordings are taken The use of ER insert earphones results in correct answer: separating wave 1 from the stimulus artifact