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Swallowing function in patients with Parkinson’s disease and deep brain stimulation / Stina Sundstedt

Sundstedt, Stina, 1988- (författare)
Umeå universitet. Institutionen för kliniska vetenskaper (utgivare)
ISBN 978-91-7601-606-0
Umeå : Umeå universitet, 2017
Engelska 49 s.
Serie: Umeå University medical dissertations, 0346-6612 ; N.S., 1859
  • BokAvhandling(Diss. (sammanfattning) Umeå : Umeå universitet, 2017)
Sammanfattning Ämnesord
Stäng  
  • Background Parkinson’s disease (PD) is one of the most common neurodegenerative diseases in Europe. Besides motor dysfunction, PD is characterized by several non-motor and secondary motor features, such as weight change, sialorrhea, constipation and swallowing problems. Of these, swallowing is one of the most critical, as it is associated with aspiration pneumonia and consequently is the comorbidity with the highest mortality rate. Swallowing problems affect four of every five patients with PD, and even mild swallowing problems have notable psychosocial effects for patients and their caregivers. Consequently, it is essential to find treatment strategies for PD that may alleviate symptoms for patients with swallowing problems and their potential consequences. Deep Brain Stimulation (DBS) is a surgical treatment option for PD, which improves overall motor function and quality of life, but its effect on swallowing function is not clear. The purpose of this thesis was to contribute to the understanding of the effect of deep brain stimulation in the subthalamic nucleus (STN DBS) and the caudal zona incerta (cZI DBS) on pharyngeal swallowing function and on swallow-specific quality of life in patients with PD. The specific aims were to assess longitudinally the effect of STN DBS and cZI DBS on swallowing at 6 and 12 months postoperatively, in order to identify possible effects of the DBS on swallowing function. In addition, the effects of cZI DBS on ratings of swallowing-related non-motor and secondary motor features such as body weight changes, sialorrhea and speech problems were to be assessed. Methods Eleven PD patients with STN DBS (Paper I) and seventeen patients with cZI DBS (Paper II-IV) were included in this thesis. All patients were evaluated preoperatively and 6 and 12 months postoperatively. The effect of STN DBS and cZI DBS on swallowing was assessed with Fibreoptic-Endoscopic Evaluation of Swallowing (FEES) according to a predefined protocol including Penetration-Aspiration scale, Secretion Severity scale, preswallow spillage, pharyngeal residue, and pharyngeal clearance. Self-assessments were addressed using a visual analogue scale. The cZI DBS patients also completed the Swallowing Quality of Life (SWAL-QOL) questionnaire. Weight changes measured by Body Mass Index, and specific items from the Unified Parkinson’s Disease Rating Scale were also examined. Nine controls without PD were included in Paper IV, by answering the SWAL-QOL questionnaire. Results No clear effect of DBS on swallowing function or swallow-specific quality of life could be observed. There was no effect of DBS on the occurrence of aspiration, secretion, pharyngeal residue or clearance in the study groups with STN DBS or cZI DBS. Patients with STN DBS reported a subjective improvement in swallowing function with DBS stimulation turned on at 6 and 12 months after surgery. In patients with cZI DBS, the median body mass index was postoperatively increased with 1.1kg/m 2 and the median increase in weight were +3.0 kg after 12 months with cZI DBS. The scores from the SWAL-QOL questionnaire were high overall in the group with cZI DBS, and the scores were unaffected by the cZI DBS surgery and stimulation. The SWAL-QOL total score was not significantly different between the PD patients and the controls, but the scores from the ‘burden’ and the ‘symptom’ subscales were worse in PD patients. Conclusions STN DBS or cZI DBS did not have a negative effect on swallowing function or ratings of swallow-specific ‘quality of life’ aspects in this cohort. Patients with STN DBS reported a self-perceived improvement in swallowing function when DBS was turned on. With regard to swallowing, patients with cZI DBS had an overall good quality of life throughout the conduct of the study and their swallow-specific quality of life was not negatively affected by cZI DBS. There seems to be no increased risk for aspiration or penetration due to surgery or stimulation for either the STN DBS or the cZI DBS groups. cZI DBS caused weight gain postoperatively. Since the sample sizes in these cohorts are small, the findings need to be confirmed in larger studies. 

Ämnesord

Deep brain stimulation  -- methods (MeSH)
Deglutition  -- physiology (MeSH)
Deglutition disorders  -- therapy (MeSH)
Parkinson disease  -- therapy (MeSH)
Parkinson disease  -- physiopathology (MeSH)
Quality of life  (MeSH)
Zona incerta  (MeSH)
Subthalamus  -- physiopathology (MeSH)
Oto-rhino-laryngology  (umu)

Indexterm och SAB-rubrik

Parkinson’s disease
Swallowing
Deep brain stimulation
Subthalamic nucleus
Caudal zona incerta
Swallowing quality of life

Klassifikation

616.83306 (DDC)
Vef (kssb/8 (machine generated))
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