Analysis of test-retest variability in facial electroneurography.
Facial electroneurography is an objective electrophysiologic measurement of a muscle compound action potential used to assess prognosis for recovery from facial paralysis. In the present study, test precision is accompanied by a test-retest variability of 6.2%. The primary source of this variability is trigeminal nerve artifact, but submaximal nerve stimulation, changing skin resistance, and inherent nerve properties may also influence results. An ideal stimulus intensity that avoids patient discomfort and trigeminal nerve artifact but attains maximal nerve response is not possible in every patient.
D000200:Action Potentials; D000328:Adult; D003201:Computers; D004558:Electric Stimulation / Q000379:methods; D004566:Electrodes; D005158:Facial Paralysis / Q000175:diagnosis* / Q000503:physiopathology*; D005260:Female; D006801:Humans; D008297:Male; D011379:Prognosis; D014276:Trigeminal Nerve / Q000503:physiopathology