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Comparative Analysis of Acute Levodopa Challenge Test and the Outcomes of Deep Brain Stimulation in Parkinson's
Yusheng Chen1, Jie Zu2, Wei Zhang2
1Department of Neurology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou, China.
Background:
We study the correlation between the preoperative levodopa challenge test and the efficacy of deep brain stimulation (DBS) surgery in Parkinson's disease (PD).
Methods:
Fifty patients with PD who underwent DBS treatment in our hospital from October 2016 to October 2017 were enrolled in this study. Using the Unified Parkinson Disease Rating Scale-III (UPDRS-III) as an indicator, we analyzed the improvement in motor symptoms on the levodopa challenge test and by DBS surgery. We also discussed the correlation between the effects of the levodopa challenge test and DBS surgery.
Results:
There was no correlation between the results of the levodopa challenge test and DBS surgery. There was a linear correlation between muscle rigidity and bradykinesia, whereas the linear correlation between other symptoms was weak.
Conclusion:
The levodopa challenge test can be used as a screening tool for patients undergoing DBS surgery, and can predict the degree of improvement in muscle rigidity and bradykinesia surgery. However, the prediction of the degree of improvement of total motor symptoms is poor.
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