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Audiology - Communication Research

versão On-line ISSN 2317-6431


ALVES, Thaís Coelho et al. Oral transit time and brain lesion laterality in stroke. Audiol., Commun. Res. [online]. 2017, vol.22, e1794.  Epub 27-Nov-2017. ISSN 2317-6431.


The oropharyngeal transit time changes according to several variables.


To compare the total oral transit time (TOTT) and laterality of brain lesion in the individual after stroke with oropharyngeal dysphagia.


Analyzed 61 videofluoroscopic swallowing studies of individuals after unilateral cortical ischemic stroke. Participants were divided into two groups. Group 1 (G1) consisted of 30 individuals with right-side cortical lesion and group 2 (G2) of 31 individuals with left-side cortical lesion. Quantitative analysis of the TOTT was performed by two judges trained in the procedure by means of specific software and an analysis of the reliability between judges was performed. The Mann-Whitney test was used for the data analysis.


It was found TTOT longer than 2000 ms in 50% of the G1 and in 94% of the individuals of G2 with a significant statistical difference between the groups (p<0.01). In the comparison between G1 and G2 regarding TOTT, it was verified that there was significant statistical difference (p=0.001). However, there was no significant statistical difference in the comparison between G1 and G2 for both TOTT shorter than 2000 ms (p=1.000) and TOTT longer than 2000 ms (p=0.603). However, it was found that in G2 the TOTT average is longer than 2000 ms and was greater than in G1.


There were TOTT shorter and longer than 2000 ms in both hemispheric cortical lesion. The frequency of individuals with TTOT are longer than 2000 ms and the average are greater in the left-side cortical lesion in stroke.

Palavras-chave : Deglutition; Deglutition disorders; Stroke; Software; Quantitative analysis.

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