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はじめに
多数の薬剤が認知機能障害の原因となる。特に高齢者では,肝機能,腎機能が低下していることが多く,薬剤性の認知症やせん妄などの認知機能障害をきたしやすい。また,認知症,脳卒中およびパーキンソン病などの神経疾患は薬剤誘発性の認知機能障害の閾値を下げる。本稿では薬剤による認知機能障害について概説する。
Abstract
Compared to young people, elderly people are more likely to develop cognitive impairments associated with medications. Dementia and delirium (acute confusional state) are known to be associated with drug toxicity. Anticholinergic medications are important causes of acute and chronic cognitive impairment. Psychoactive drugs, antidepressants, and anticonvulsants can cause delirium and dementia. In addition, non-psychoactive drugs such as histamine H2 receptor antagonists, cardiac medications, and antibiotics may cause acute and chronic cognitive impairments. Early diagnosis and withdrawal of the offending agent is essential for treating drug-induced dementia and delirium.
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