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Clinical nutrition

Prevalence and clinical correlation of dysphagia in Parkinson disease: a study on Chinese patients

Abstract

Background/objectives:

Dysphagia is relatively common in patients with Parkinson disease (PD) and can have a negative impact on their quality of life; therefore, it is imperative that its prevalence in PD patients is studied. The aim of this study was to explore the prevalence and clinical correlation of dysphagia in Chinese PD patients.

Subjects/methods:

We recruited 116 Chinese PD patients. A videofluoroscopic study of swallowing (VFSS) was used to identify dysphagia. Assessments, including water drinking test, relative motor symptoms, non-motor symptoms (NMS) and quality of life, were performed to analyze the risks of dysphagia.

Results:

The prevalence of dysphagia was 87.1%. The comparison of demographic and clinical features between patients with and without dysphagia included sex, education level, disease course, Mini-mental State Examination (MMSE), Hamilton Depression Scale (HAMD), Hamilton Anxiety Scale (HAMA), Question 6, 7 of the Unified Parkinson Disease Rating Scale (UPDRS Part II), Hoehn-Yahr stage (H&Y), water drinking test, 39-item Parkinson Disease Questionnaire (PDQ-39) and Non-Motor Symptoms Quest (NMSQ). We found significant correlations between dysphagia and age. Using age, disease course, and H&Y stage as the independent variable in our regression analysis for assessing the risk factors of dysphagia in PD patients, age and H&Y stage displayed a strong correlation as the risk factors. The risk of dysphagia in elderly PD patients is 1.078 times greater than that of younger PD patients. Also, the risk of dysphagia in PD patients of a greater H&Y staging is 3.260 times greater than that of lower staging PD patients.

Conclusions:

Our results suggest that dysphagia is common in Chinese PD patients. Older patients or those in higher H&Y stages are more likely to experience dysphagia. There is no correlation between dysphagia and PD duration.

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Acknowledgements

The authors thank all the PD patients and their families who participated in our research. This work was supported by the natural science foundation of Zhejiang Province (No: LY12H09006), the National Science & Technology Pillar Program during the Twelfth Five-year Plan Period (No: 2012BAI10B00) and the Program for Zhejiang Leading Team of Science and Technology Innovation (No: 2012R10049-04).

Author contributions

XD designed the study, performed neurological evaluations, VFSS data acquisition and statistical analyses and wrote the first draft. JG conducted neurological evaluations. CX conducted neurological evaluations, VFSS data acquisition. BX participated in VFSS data acquisition, and the review and critique of the manuscript. SW conducted neurological evaluations. ZC conducted neurological evaluations. YL conducted neurological evaluations, and the review and critique of the manuscript. DL conducted neurological evaluations. FX performed image preprocessing and statistical analyses. Wei Luo conceived of and organized the research project, participated in the neurological evaluations, and the review and critique of the manuscript.

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Correspondence to W Luo.

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Ding, X., Gao, J., Xie, C. et al. Prevalence and clinical correlation of dysphagia in Parkinson disease: a study on Chinese patients. Eur J Clin Nutr 72, 82–86 (2018). https://doi.org/10.1038/ejcn.2017.100

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