The influence of sour taste and cold temperature in pharyngeal transit duration in patients with stroke

Abstract

-Context -The effect of sour taste and food temperature variations in dysphagic patients has not been entirely clarified.Objective -To determine the effect of sour and cold food in the pharyngeal transit times of patients with stroke. Methods -Patients participating in this study were 30 right-handed adults, 16 of which were male and 14 were female, aged 41 to 88 (average age 62.3 years) with ictus varying from 1 to 30 days (median of 6 days). To analyze the pharyngeal transit time a videofluoroscopy swallow test was performed. Each patient was observed during swallow of a 5 mL paste bolus given by spoon, totaling four different stimuli (natural, cold, sour and cold sour), one at a time, room temperature (22°C) and cold (8°C) were used. Later, the tests were analyzed using specific software to measure bolus transit time during the pharyngeal phase. Results -The results showed that the pharyngeal transit time was significantly shorter during swallow of cold sour bolus when compared with other stimuli. Conclusion -Sour taste stimuli associated to cold temperature cause significant change in swallowing patterns, by shortening the pharyngeal transit time, which may lead to positive effects in patients with oropharyngeal dysphagia.

Protocolo para controle de eficácia terapêutica em disfagia orofaríngea neurogênica (PROCEDON)

“…Pré-fonterapia a deglutição do paciente apresentava 13 segundos de TTF, quando na siologia normal este tempo não excede de 1 a 2 segundos, caracterizando a grande di culdade do paciente em desencadear a resposta faríngea. Em pacientes pós-AVE, a alteração de TTF já foi discutida, tanto com relação à mudança no tempo como também sobre os marcadores que de nem o início da fase faríngea 14,31,32 . No entanto, não foram encontrados trabalhos na literatura que tivessem utilizado os softwares de medição de tempo de trânsito orofaríngeo para avaliar o desempenho da dinâmica da deglutição pré e pós-fonoterapia.…”

Neural Mechanisms of Swallowing and Effects of Taste and Other Stimuli on Swallow Initiation

“…There is considerable evidence that sour taste facilitates swallow initiation. 41) We tested the effects of water, sour solutions, and other taste solutions applied to the mucosa of the pharyngolaryngeal region on swallow initiation in anesthetized rats, and showed that acetic and citric acids, which provide a sour taste, had a stronger facilitatory effect on swallow initiation as compared with other taste solutions 15) (Fig. 3).…”

Disfagia orofaríngea neurogênica: análise de protocolos de videofluoroscopia brasileiros e norte-americanos

“…The influence of sour taste and cold temperature in pharyngeal transit duration in patients with stroke Cola et al (22) 2010…”