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标题:A Case of Major Form Familial Hyperekplexia: Prenatal Diagnosis and Effective Treatment With Clonazepam
时间:2019-11-19 22:04:34
DOI:10.1177/0883073807303996
作者:Doria Lamba, L.; Giribaldi, G.; De Negri, E.
关键词:familial hyperekplexia; clonazepam; prenatal diagnosis
出版源: Journal of Child Neurology ,22 (6) :769-772
摘要:Hyperekplexia (OMIM 149400) is an uncommon neurologic disorder characterized by exaggerated response to sensitive stimuli. It may be sporadic or familial. The disease is usually caused by mutations in the inhibitory glycine receptor alpha 1-subunit. The authors report a male patient who is affected by the major form of familial hyperekplexia. He is currently 5 years old and is being successfully treated with clonazepam. Prenatal diagnosis was made owing to prior identification of point mutation K276E in his affected mother. Early diagnosis avoided complex and prolonged differential diagnostic procedures and allowed for early and effective intervention on severe neonatal symptoms: hypertonia, episodes of cyanosis, apneic spells, and massive myoclonic jerks. During his first year of life, the patient was treated with cycles of phenobarbital and diazepam and achieved partial clinical response. Subsequent therapy with low-dose clonazcpam was highly effective in reducing myoclonic jerks and exaggerated startle reaction, and unlike previously used drugs, it was decisive in reducing hypertonia.
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