Vitamin D level in relation to phonetic function among subacute stroke patients

Abstract

There are many stroke patients with decreased phonation ability. Vitamin D is associated with weakness in muscle power and a decreased function of activity and is often accompanied by a deficiency of serum vitamin D in stroke patients. This study was conducted to evaluate the correlation between serum vitamin D level and phonetic function in subacute stroke patients. Among subacute stroke patients, patients with dysphonia were retrospectively recruited. Phonation function was assessed by acoustic analysis using the dysphonia severity index (DSI) and maximum phonation time for 4 corner vowels/a/,/i/,/u/, and/ae/. As a statistical method, the relationships of vitamin D levels with the maximum phonation time and DSI were evaluated using Pearson's correlation analysis and linear regression analysis. A total of 32 stroke patients with dysphonia were assessed. A positive correlation was found between vitamin D levels and the DSI of /a/, /u/, /i/, and/ae/. The DSI of/u/ was significantly lower in the group with vitamin D deficiency. Vitamin D level was associated with phonation function and its deficiency may be a factor in predicting phonation severity in stroke patients.

Investigation of Voice Change in Stroke Individuals in the Subacute Period Compared to the Acute Period

“…5 Voice and associated speech changes in CVA are complex and largely dependent on the location of the cerebral event, especially in subcortical, upper motor neuron, pons, and cerebellar lesions; vocal fold function may also be impaired. 5,13,14 According to one study, vocal fold paresis is reported to occur in approximately 20% of stroke patients. 14,15 Changes in voice quality, similar to other functional impairments caused by the neurological involvement of oropharyngeal muscles, can have a significant impact on the quality of life of stroke patients.…”

“…5,13,14 According to one study, vocal fold paresis is reported to occur in approximately 20% of stroke patients. 14,15 Changes in voice quality, similar to other functional impairments caused by the neurological involvement of oropharyngeal muscles, can have a significant impact on the quality of life of stroke patients. 16 Objective methods that provide a measurable criterion are used to assess the voice.…”