CNIM study questions with correct answers

You record a spinal potentialto: - Answer Establish an Action potential (AP) What drugs would you use for language mapping? - Answer Fentanyl D waves are recorded form which of the following electrodes? - Answer Epidural electrodes over the spinal cord. Horizontal Dipole: - Answer P14 What nerve roots are being monitored using the Peroneus longus muscle? - Answer L5-S2 Which is the main reason for measuring impedances of all electrodes? - Answer To evaluate the electrode contact. When is leakage current present in an evoked potential instrument? - Answer Whenever the instrument is connected to a power source Which will enhance the analog to digital conversion? - Answer Ensure that the range is appropriate to the size of the signal being recorded What is the maximum allowable leakage of evoked potential instrument chassis current? - Answer 100 microamperes What is the most likely effect of isoflurane at MAC 1.5 on tibialis anterior CMAP amplitude in response to spinal stimulation? - Answer Marked decrease