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DOI: 10.1590/0004-282X20160191
Treatment of hemifacial spasm with botulinum toxin type a: effective, long lasting and well tolerated
Tratamento do espasmo hemi-facial com toxina botulínica tipo a foi efetivo, bem tolerado e com efeito sustentadoABSTRACT
Hemifacial spasm (HFS) is a common movement disorder characterized by involuntary tonic or clonic contractions of the muscles innervated by the facial nerve.
Objective
To evaluate the long-term effect of botulinum toxin type A (BTX-A) in the treatment of HFS.
Methods
A retrospective analysis of patients treated at the Movement Disorders Outpatient Clinic in the Neurology Service, Hospital de Clínicas, Federal University of Paraná, Curitiba, from 2009 to 2013 was carried out. A total of 550 BTX-A injections were administered to 100 HFS patients.
Results
Mean duration of improvement following each injection session was 3.1 months, mean latency to detection of improvement was 7.1 days and mean success rate was 94.7%. Patients were evaluated at an interval of 5.8 months after each application. Adverse effects, which were mostly minor, were observed in 37% of the patients at least once during follow-up. The most frequent was ptosis (35.1%).
Conclusion
Treatment of HFS with BTX-A was effective, sustainable and safe and had minimal, well-tolerated side effects.
RESUMO
O espasmo hemifacial (EHF) é um distúrbio do movimento comum, caracterizado pela presença de contrações musculares tçnicas ou clçnicas dos músculos inervados pelo nervo facial.
Objetivo
Avaliar o efeito em longo prazo do uso da toxina botulínica tipo A (TXB) no tratamento do espasmo hemifacial (EHF).
Métodos
Foi realizada uma análise retrospectiva de pacientes do Ambulatório de Distúrbios do Movimento do departamento de Neurologia do Hospital das Clínicas da Universidade Federal do Paraná entre 2009 e 2013. Foram administradas 550 doses em 100 portadores de EHF.
Resultados
A duração média de efeito foi de 3,14 meses, com latência de 7,10 dias e a taxa de sucesso foi de 94,73%. Os pacientes foram reavaliados pelo médico em um intervalo de 5,76 meses após cada aplicação. Efeitos adversos transitórios, em sua maioria menores, foram observados em 37% dos pacientes ao menos uma vez durante o seguimento e o mais freqüente foi ptose palpebral (35,14%).
Conclusão
O tratamento do EHF com TXB-A mostrou-se eficaz, sustentado e seguro, com efeitos colaterais mínimos e bem tolerados.
Publication History
Received: 12 March 2016
Accepted: 18 October 2016
Article published online:
05 September 2023
© 2023. Academia Brasileira de Neurologia. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commecial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)
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