부산대학교 도서관

Objective: To analyze the correlation between the neural telemetry response thresholds obtained by the conventional method (ART) and the new method offered by the software Maestro 7.0 (AutoART). Method: Auditory response telemetry (ART) measurements were performed intraoperatively by ART and AutoART. Data regarding the presence of electrical compound action potential (eCAP) in both methods and the correlation between the threshold values were analyzed. Both methods use the same pulse duration,but the stimulation rate and number of iterations differ. Average thresholds were calculated for the apical (electrodes 1 to 4), medial (5 to 8) and basal region (9 to 12). Auto ART was always the first method of recording eCAP. ART thresholds were converted and comparison with t test was analyzed in the same unit (qu). Results: Measures were recorded in nine surgeries, six with the Flex28 device, two with the FlexSoft and one the Flex19. All surgeries resulted in complete insertion and normal of impedances of all electrodes. In seven surgeries, the number of electrodes that presented presence of neural responses with conventional ART was equal to the number of present responses obtained with AutoART. In one surgery, we observed presence of neural responses in 75% of the electrodes with AutoART, and absent response with conventional ART. In another surgery, responses were found in 80% of the electrodes tested in AutoART and 100% in ART. We found statistical differences between AutoART and ART mean thresholds in all measures. Conclusions: AutoART is an effective and faster way of measuring neural responses. However, the thresholds obtained through AutoNRT were significantly higher than the thresholds obtained by ART. We believe that the difference in thresholds may be due to the diferences in the number of iterations, the stimulation rate or because autoART was always the first of the measurements. We will continue to collect data randomizing the order of the evaluations. [ABSTRACT FROM AUTHOR]