B - 124 Neuropsychological Evaluation of Chinese Speaking Patients with Parkinson’s Disease for Deep Brain Stimulation Surgery

Abstract Objective Neuropsychological evaluation is a critical part of standardized workup of candidates with Parkinson’s disease (PD) for deep brain stimulation (DBS), identifying patients with cognitive dysfunction (Okun et al., 2006). Existing literature has primarily involved native English speakers with dementia and mild cognitive impairment (MCI), informing treatment planning (Troster et al., 2018). This case series aims to address the gap for Chinese-speaking patients, by describing Chinese neuropsychological measures and norms sensitive to MCI. Method Six cases of first-generation Chinese immigrants diagnosed with PD considering DBS were included in this study. They identified Chinese as their primary language and English as their second language. Duration of residency in the U.S. ranged from 11 to 44 years. The battery included Chinese version of the MOCA; Chinese WAIS-IV; Boston Naming Test (Cheung et al. 2004); semantic verbal fluency, Auditory Verbal Learning Test, Symbol Digit Modalities Test, and Color Trail Test (Lee and Wang, 2010); and Brief Visuospatial Memory Test, Revised Edition (BVMT-R) or RBANS: Figure Recall. Results Consistent with studies for native English speakers (Foley et al., 2018), cognitive declines were found in attention, memory, and executive function domains. Two of the six cases were diagnosed with MCI, which warrants caution before DBS. Conclusions This case series explores measures for Chinese speakers with PD undergoing evaluation for DBS surgery, highlighting cultural considerations, including Chinese measures and norms. This battery can help to differentiate cognitive impairments before proceeding with DBS. Given the diversity within this population and the scarcity of Chinese tools, more research is urgently needed.