ACNS Guidelines Practice Exam Questions With Complete Solutions

Guideline 1: Minimum Technical Requirements for Performing Clinical EEG correct answer: Digital equipment has many advantages over analog equip- ment and is now used for EEG in most facilities. Some recommendations in this guideline have changed to reflect the greater functionality of digital equipment, including the ability to record good quality signal with nontraditional electrodes and slightly higher impedances. The list of basic patient information has been expanded to include more factors that can influence the EEG. The sections on calibration, sensitivity, filters, and recording montages have been updated to maintain relevance for digital systems. Newly added sections include those discus- sing the utility of longer recordings, sleep deprivation, and simultaneous video recording. Other new sections include material on photic stimulation procedure, interpreting physician notification of critical EEG results, and data storage. Guideline2 for Standard Electrode Position Nomenclature correct answer: Previously guideline 5 Although the 10-10 system of electrode position nomenclature has been accepted internationally for almost two decades, it has not been used universally.The reasons for this and clinical scenarios when the 10-10 system provides additional localizing information are discussed in this revision. In addition, section IV elaborates on situations in which AF1/2, AF5/6, PO1/2, and PO5/6 electrode positions may be used for EEG recording. Guideline 3: A Proposal for Standard Montages to be Used in Clinical EEG correct answer: This was previously published as Guideline 6. A discussion of methodology for the appropriate selection of reference electrodes is added. In addition, montages are added to assist with localization of abnormal activity in mesial frontal and anterior temporal regions. Guideline 4: Recording Clinical EEG on Digital Media correct answer: This was previously published as Guideline 8. Recording parameters have been updated to reflect the higher level of resolution provided by current technology. Also, types of storage devices have changed since the earlier version of this guideline, and recommen- dations are made for digital storage to ensure durability and Health Insurance Portability and Accountability Act compliant accessibility as computer technology continues to evolve. Finally, details on the minimum computer screen display resolution have been updated.