Correlations between swallowing function and acoustic vowel space in stroke patients with dysarthria

Abstract

BACKGROUND: Dysphagia and dysarthria tend to coexist in stroke patients. Dysphagia can reduce patients' quality of life, cause aspiration pneumonia and increased mortality. OBJECTIVE: To evaluate correlations among swallowing function parameters and acoustic vowel space values in patients with stroke. METHODS: Data from stroke patients with dysarthria and dysphagia were collected. The formant parameter representing the resonance frequency of the vocal tract as a two-dimensional coordinate point was measured for the /a/, /ae/, /i/, and /u/vowels, and the quadrilateral vowel space area (VSA) and formant centralization ratio (FCR) were measured. Swallowing function was evaluated by a videofluoroscopic swallowing study (VFSS) using the videofluoroscopic dysphagia scale (VDS) and penetration aspiration scale (PAS). Pearson's correlation and linear regression analyses were used to assess the correlation of VSA and FCR to VDS and PAS scores. RESULTS: Thirty-one stroke patients with dysphagia and dysarthria were analyzed. VSA showed a negative correlation to VDS and PAS scores, while FCR showed a positive correlation to VDS score, but not to PAS score. VSA and FCR were significant factors for assessing dysphagia severity. CONCLUSIONS: VSA and FCR values were correlated with swallowing function and may be helpful in predicting dysphagia severity associated with stroke.

Association between phonation and the vowel quadrilateral in patients with stroke

“…The results of VSA appeared to reflect suprahyoid muscle function and dysarthria better than FCR, consistent with the findings of our previous study. [ 18 ] We also found higher degrees of correlation for the high vowels than for the low vowels. The comparison of brain stem lesions and non-brain stem lesions among subgroups showed that MPT was significantly low in the brain stem lesion subgroup, similar to previous studies.…”

Efeito imediato de diferentes exercícios no espaço vocálico de mulheres com e sem nódulos vocais

“…Sendo assim, a partir dos achados deste estudo pode-se verificar que há um maior intervalo no espaço vocálico de mulheres do MVS mesmo antes da execução do exercício, e que a sua execução parece potencializar essa diferença, principalmente para os exercícios de CAR e VSL. A redução do espaço vocálico também foi observada em estudos anteriores, incluindo indivíduos com paralisia unilateral de prega vocal (9) , com disartrias de diferentes etiologias (4) e com disartria decorrentes da doença Parkinson (5) .…”

“…Tradicionalmente, as medidas formânticas têm sido utilizadas para diferentes finalidades, o que inclui a caracterização do espaço vocálico em diferentes populações em função do gênero, idade, variação linguística, estilos de fala e indivíduos com distúrbios da comunicação de diferentes etiologias. Por exemplo, o espaço vocálico tem sido utilizado para avaliar a relação entre a articulação das vogais e a inteligibilidade de fala em indivíduos com doença de Parkinson, com sequela de acidente vascular encefálico, em crianças com síndrome de Down, com fissura palatina, entre outros (4)(5)(6) . Nesse sentido, observa-se que em pacientes disártricos, há redução do espaço vocálico devido à diminuição na amplitude e velocidade dos movimentos dos articuladores.…”

Penerapan Mekanisme Berbicara pada Penderita Disartria Menggunakan Media Audio Visual

“…Lidah pendek yang mempengaruhi gangguan berbicara ini bisa juga berakibat panjang pada masalah lainnya, yaitu pada proses menelan makanan. Penelitian pada penderita stroke yang mengalami disartria berkepanjangan bisa menjadi faktor predikso munculnya disfagia, yaitu kondisi di mana seseorang mengalami kesulitan dalam menelan makanan akibat lidah yang pendek [6].…”