Abstract:
BACKGROUND:The oldest old are prone to develop delirium. Studies into risk factors for delirium have been carried out predominantly in younger age groups. The aim of this population-based follow-up study was to investigate the risk factors for delirium requiring medical attention and subsequent prognosis in the non-demented general population aged > or = 85 years. METHOD:The study included the non-demented subjects in the population-based Vantaa 85+ study. After the 3-year observation period, 199 subjects (91% of those surviving) were re-examined and their medical records were evaluated for episodes of delirium. The subjects were followed up with respect to mortality for another 2 years. RESULTS:During the 3-year observational period, 20 subjects (10%) had been diagnosed as having had an episode of delirium. A Mini-Mental State Examination score of < 24 (odds ratio (OR) 3.44, confidence interval (CI = 95%) 1.27-9.32) and high systolic blood pressure (OR 3.08, CI 1.08-8.79) were identified as independent risk factors for delirium. The association between the delirium episode and a new diagnosis of dementia was significant ( p = 0.001). The mortality rate was greater among those subjects who experienced delirium than among subjects without this syndrome ( p = 0.008). CONCLUSIONS:Mild cognitive impairment and high systolic blood pressure were found to be risk factors for delirium requiring medical attention in the general non-demented population aged > or = 85 years. The study also highlights the significant association between delirium and a new dementia diagnosis in this age group.
journal_name
Int J Geriatr Psychiatryjournal_title
International journal of geriatric psychiatryauthors
Rahkonen T,Eloniemi-Sulkava U,Halonen P,Verkkoniemi A,Niinistö L,Notkola IL,Sulkava Rdoi
10.1002/gps.356subject
Has Abstractpub_date
2001-04-01 00:00:00pages
415-21issue
4eissn
0885-6230issn
1099-1166journal_volume
16pub_type
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