Published in:
01-12-2021 | Motor Evoked Potential | Original Research
Non-linear regression analysis for estimating the intraoperative motor evoked potential recovery time after bolus neuromuscular blockade
Authors:
Tetsuro Tatsuoka, Tasuku Fujii, Takeshi Furuhashi, Kimitoshi Nishiwaki
Published in:
Journal of Clinical Monitoring and Computing
|
Issue 6/2021
Login to get access
Abstract
The recovery time of the motor evoked potential (MEP) amplitude following a neuromuscular blockade (NMB) during surgery is useful for interpreting low-amplitude waveforms or selecting the baseline waveform. In this study, the MEP data of 195 orthopedic cases who received a bolus dose of rocuronium at the beginning of surgery, between June 2009 and January 2016 were used. A non-linear regression analysis was applied to MEP amplitude data of multiple patients. The time taken for 90% of the maximum-amplitude recovery was estimated from the identified time series model. The 90% amplitude recovery time was 88.6 min in the pharmacological model and 89.4 min in the logistic model. These results were included in the 95% confidence interval of the previous studies. Although MEP amplitude is relatively unstable because of anesthesia, the averaged time series model of MEP amplitude can be estimated by using a large number of data.