Swallowing function in Parkinson’s patients following Zona Incerta deep brain stimulation.

Acta Neurol Scand. 2012 Nov;126(5):350-6. doi: 10.1111/j.1600-0404.2012.01658.x. Epub 2012 Mar 4
 

Source

Division of Speech and Language Pathology, Department of Clinical Sciences, Umeå University, Umeå, Sweden. stina.sundstedt@gmail.com

Abstract

OBJECTIVE:

The purpose of the present study was to examine whether there was a negative effect of caudal Zona Incerta deep brain stimulation (cZI DBS) on pharyngeal swallowing function in Parkinson’s patients (PD). There are no former reports including swallowing and cZI DBS.

METHODS:

Eight patients (aged 49-71 years; median 62) were evaluated pre- and post-operatively, at 6 and 12 months after DBS surgery. Evaluation tools were fiberoptic endoscopic evaluation of swallowing examinations and patients’ self-assessments of their swallowing function including a visual analog scale and quality-of-life-related questions. The swallowing protocol included Rosenbek’s Penetration-Aspiration Scale, Secretion Severity Scale and parameters for preswallow spillage, pharyngeal residue, and pharyngeal clearance.

RESULTS:

There was no clear-cut effect of neurostimulation post-operatively at 6 and 12 months on any of the swallowing parameters except for the preswallow spillage that was slightly worsened in the stimulation on condition 12 months post-operatively. The answers to the self assessment questions did not vary significantly.

CONCLUSIONS:

The effect of the stimulation on the swallowing function varied among individuals, but the overall outcome was that cZI DBS did not seem to have a negative influence on swallowing function in the eight patients studied.

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