Seizures in Elderly Patients with Dementia

Springer Science and Business Media LLC - Tập 20 - Trang 791-803 - 2012
Mario F. Mendez1, Gerald T. H. Lim1
1Department of Neurology, The University of California at Los Angeles, Los Angeles, USA

Tóm tắt

Epileptic seizures occur in patients with dementia at a higher prevalence than among healthy elderly individuals. The incidence of seizures among patients with dementia varies with the aetiology of the dementing illness. In patients with Alzheimer’s disease (the most common form of dementia), approximately 10–22% have at least one unprovoked seizure. Seizures usually occur in later stages of Alzheimer’s disease, on average, ≥6 years into the course of the disease. Seizures in Alzheimer’s disease are more likely to occur with early-onset disease, particularly if there is a familial presenilin I mutation. The incidence of seizures in other dementing diseases is less clear. There are special considerations regarding the management of seizures in the elderly with dementia. First, the presence of cognitive impairment may impede an accurate diagnosis of seizures. Clinicians may also mistake seizure manifestations for symptoms of the underlying dementia. Second, since most dementia patients are elderly, there are pharmacokinetic changes with aging that affect the use of antiepileptic drugs. Third, antiepileptic drugs have potential cognitive adverse effects that may worsen dementia. Although few studies are available, extrapolations from research in young people and elderly patients without dementia provide several recommendations for the management of seizures in patients with dementia: exclude symptomatic causes of seizures before committing to antiepileptic drug therapy; treat after a first seizure if there is evidence of focal neurological involvement or a risk of recurrent seizures; use antiepileptic drugs with minimal cognitive adverse effects, such as carbamazepine, valproic acid, gabapentin and lamotrigine; and use the lowest possible dosage and monitor antiepileptic drug levels, where possible.

Tài liệu tham khảo

General Accounting Office Report B-277607. Health, Education, and Human Services division. Alzheimer’s Disease Prevalence. Washington (DC): United States General Accounting Office, 1998 Jan 28

Schoenberg BS, Anderson DW, Haerer AF. Severe dementia: prevalence and clinical features in a biracial US population. Arch Neurol 1985; 42: 740–3

Department of Commerce. Aging/elderly population data. United States Census Bureau [online]. Available from URL: http://www.census.gov/population/www/socdemo/age.html#elderly [Accessed 2003 Jul 31]

Sander JWAS, Hart YM, Johnson AL, et al. National general practice study of epilepsy: newly diagnosed people with epilepsy in a general population. Lancet 1990; 20: 442–8

Despland PA. Demences et crises epileptiques tardives. Schweiz Rundsch Med Prax 1997; 86: 1414–7

Arroyo S, Kramer G. Treating epilepsy in the elderly: safety considerations. Drug Saf 2001; 24: 991–1015

Hauser WA, Annegers JF, Kurland LT. Incidence of epilepsy and unprovoked seizures in Rochester, Minnesota: 1935–1984. Epilepsia 1993; 34: 453–68

Forstl H, Burns A, Levy R, et al. Neurologic signs in Alzheimer’s disease: results of a prospective clinical and neuropathologic study. Arch Neurol 1992; 49: 1038–42

Sulkava R. Alzheimer’s disease and senile dementia of the Alzheimer type: a comparative Study. Acta Neurol Scand 1982; 65: 636–50

Kennedy AM, Newman SK, Frackowiak RS, et al. Chromosome 14 linked familial Alzheimer’s disease: a clinico-pathological study of a single pedigree. Brain 1995; 118: 185–205

Janssen JC, Hall M, Fox NC, et al. Alzheimer’s disease due to an intronic presenilin-1 (PSEN1 intron 4) mutation: a clinicopathological study. Brain 2000; 123: 894–907

Sirven JI. Management of epilepsy in older adults. Clin Geriatr 2000; 1: 93–9

Bowen JD, Larson EB. Drug-induced cognitive impairment: defining the problem and finding the solutions. Drugs Aging 1993; 3: 349–57

Haley CJ, Nelson J. Phenytoin: enterai feeding interaction. Ann Pharmacother 1989; 23: 796–8

French J, Smith M, Faught E, et al. Practice advisory: the use of felbamate in the treatment of patients with intractable epilepsy: report of the Quality Standards of Subcommittee of the American Academy of Neurology and American Epilepsy society. Neurology 1999; 52: 1540–5

Volicer L, Smith S, Volicer BJ. Effect of seizures on progression of dementia of the Alzheimer type. Dementia 1995; 6: 258–63