Tratamiento de voz Lee Silverman en la disartria hipocinética: revisión de la efectividad del tratamiento en los enfermos de Parkinson

Abstract

Dysarthria is a neurological disorder of the central and/or peripheral nervous system that affects muscle control mechanisms of speech. Parkinson's disease (PD) is characterised by hypokinetic dysarthria, which produces a weak, slow and monotonous speech. It is affected by breathing, resonance, phonation, prosody, and articulation. There is a voice treatment called “Lee Silverman” (LSVT), which stimulates and educates the patient to produce a higher voice through the increase of vocal effort.The purpose of this review is to determine the effectiveness of LSVT as a method of speech therapy rehabilitation of hypokinetic dysarthria in patients with PD.A literature review was conducted in the PubMed and Cochrane databases. A total of 65 articles selected articles, but they were reduced to 7 after applying the inclusion and exclusion criteria. A comparative analysis was performed on these.The results of the study and comparison with other reviews have shown significant improvements after LSVT. Significant changes have been observed in intelligibility, voice intensity with an increase in vocal loudness and greater tone of the buccal-phonation organs, as well as an improvement in the articulation and coordination movements. This has led to a more functional speech.To conclude, the results show that LSVT could be effective for the rehabilitation of the hypokinetic dysarthria in Parkinson's patients. However, the results cannot be considered universal, as only 7 articles have been compared, which is not sufficient to support or refute the effectiveness of the treatment.