Benefits of botulinum toxin associated to swallowing therapy in patients with severe dysphagia Benefícios da aplicação de toxina botulínica associada à fonoterapia em pacientes disfágicos graves

ABSTRACT Case report with the aim to characterize the benefits of botulinum toxin injection into salivary glands in association with swallowing therapy in patients with severe dysphagia. The medical records of five neurological patients (four male and one female, aged between 17 and 70 years) who exclusively used alternative feeding were analyzed. Four patients were tracheostomized. Inclusion criterion was to present severe dysphagia associated to clinical manifestations of drooling and/or sialorrhea with significant aspiration of saliva, restricting the improvement in swallowing rehabilitation. Data were collected before and after intervention associated with botulinum toxin injection, regarding the following aspects: mobility and strength of oropharyngeal structures (lips, tongue and cheeks), laryngeal elevation, severity degree of dysphagia, use of alternative tube feeding and tracheostomy. After swallowing therapy, four patients showed improvement in mobility and strength of the lips, tongue, cheeks and larynx. Four patients presented functional swallowing and one of them modified had the severity degree of dysphagia changed. Therefore, most patients were able to receive exclusive oral feeding, and only one remained on combination of gastrostomy and oral feeding with pasty consistence. All tracheostomized patients had the tracheostomy cannula removed. The study showed that the treatment described contributed to swallowing rehabilitation, reintroduction of oral feeding, and withdrawal of the tracheostomy cannula.