Journal article
Diagnostic accuracy of brain stem auditory evoked response in distinguishing drug-induced parkinsonism from Parkinson'sdisease
Neurophysiologie clinique, Vol.51(6), pp.524-532
12/2021
DOI: 10.1016/j.neucli.2021.10.001
PMID: 34764016
Abstract
Brainstem auditory evoked response (BAER) is a non-invasive modality that can be used to investigate brainstem neuronal function in movement disorders. The differentiation between drug-induced parkinsonism (DIP) and Parkinson's disease (PD) can be very challenging. Although PD and DIP to some extent display similar clinical symptoms, the underlying pathophysiologic mechanisms are entirely different. Given these differences in pathogenesis, and the diagnostic utility of BAER for detecting brainstem function, BAER may help to distinguish between PD and DIP. This study aimed to assess the accuracy and predictive values of BAER parameters in differentiating DIP from PD.
We prospectively studied143 participants classified within three groups, including 50 controls, 57 PD, and 36 DIP. BAER was performed on all patients in the study. Patients in the DIP group were followed up for at least one year after discontinuation of the causative drug and examined for final diagnosis. We compared BAER latencies of the three groups and measured sensitivity, specificity, predictive values, likelihood ratios, and accuracy of BAER in diagnosing DIP.
Waves V, I-V, and III-V latencies were significantly prolonged among the PD patients compared to the DIP and the control group; however, there were no significant differences in BAER latencies between the DIP and the control group. Waves V and I-V latencies revealed the highest accuracy (86% and 79%, respectively) in distinguishing DIP from PD with high negative predictive value(89% and 83%, respectively) as well as a high negative likelihood ratio (0.2and 0.3, respectively).
This study showed that waves V and I-V latencies are significantly prolonged in PD patients compared to those with DIP, consistent with the proposed mechanisms of neurodegeneration in PD, particularly in the midbrain and pons. Consequently, BAER could be used as a useful diagnostic tool for differentiating DIP from PD.
Details
- Title: Subtitle
- Diagnostic accuracy of brain stem auditory evoked response in distinguishing drug-induced parkinsonism from Parkinson'sdisease
- Creators
- Najmeh Nikmanesh - Shiraz University of Medical SciencesEbrahim Moghimi Sarani - Shiraz University of Medical SciencesSamaneh Khazraei - Shiraz University of Medical SciencesPeyman Petramfar - Shiraz University of Medical SciencesVahid Reza Ostovan - Shiraz University of Medical Sciences
- Resource Type
- Journal article
- Publication Details
- Neurophysiologie clinique, Vol.51(6), pp.524-532
- DOI
- 10.1016/j.neucli.2021.10.001
- PMID
- 34764016
- NLM abbreviation
- Neurophysiol Clin
- ISSN
- 0987-7053
- eISSN
- 1769-7131
- Publisher
- Elsevier Masson SAS
- Number of pages
- 9
- Language
- English
- Date published
- 12/2021
- Academic Unit
- Neurology
- Record Identifier
- 9985014707002771
Metrics
3 Record Views