Transcutaneous vagal nerve stimulation improves gastroenteric complaints in Parkinson's disease patients.


Author: Kaut O1, Janocha L1, Weismüller TJ2, Wüllner U1,3

Affiliation: <sup>1</sup>Department of Neurology, University Clinic Bonn, Bonn, Germany.

<sup>2</sup>Department of Internal Medicine I, University Clinic Bonn, Bonn, Germany.

<sup>3</sup>German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany.
Conference/Journal: NeuroRehabilitation.
Date published: 2019 Dec 18
Other:
  Special Notes: doi: 10.3233/NRE-192909. [Epub ahead of print]   ,  Word Count: 205  
    BACKGROUND: Gastrointestinal dysfunctions are common in Parkinson's disease. Their management is still challenging and new treatment options are needed.



OBJECTIVE: To test whether transcutaneous vagal nerve stimulation can improve gastrointestinal dysfunction in patients with Parkinson's disease.



METHODS: We performed a randomized double-blind pilot study enrolling patients suffering from Parkinson's disease with gastroenteric complaints. Patients were randomized to use either a sham-device or to stimulate the vagal nerve with an electric device over the course of four weeks with four stimulations per day. Ten patients (aged 69.6±4.6 years) were randomized for the intervention group, and nine patients (aged 67.2±6.3 years) used a sham-device. Clinical outcome was evaluated using the Gastrointestinal Symptom Rating Scale whereas gastrointestinal motility was measured with the 13C-octanoic acid breath test.



RESULTS: In the treatment group, vagal nerve stimulation improved the Gastrointestinal Symptom Rating Scale comparing before and after stimulation (before, 8.7±6.09; after 5.67±3.08; p-value 0.48). This improvement was not observed in the sham group (before, 7.44±4.85; after, 5.67±3.08; p-value 0.16). In the 13C-octanoic acid breath test no significant changes detectable.



CONCLUSIONS: Vagal nerve stimulation is well tolerated with no side effects and may be a promising non-invasive therapy option to improve gastroenteric symptoms in Parkinson's disease.



KEYWORDS: Parkinson’s disease; Transcutaneous vagal nerve stimulation; delayed gastric emptying



PMID: 31868695  DOI: 10.3233/NRE-192909