Poster Presentations

Session Title: Alzheimer's Disease (AD) including Non-Cognitive Aspects
Presentation Date: Friday, March 14 – Saturday, March 15, 2009

NEUROPSYCHIATRIC SYMPTOMS AS PREDICTORS OF FUNCTIONAL DECLINE IN ALZHEIMER'S DISEASE

F. Lupo, K. Palmer, G. Salamone, L. Cravello, R. Perri, M. Musicco, C. Caltagirone
IRCCS Fondazione Santa Lucia, Department of Clinical and Behavioural Neurology, Rome, Italy


Background: Neuropsychiatric symptoms often occur in Alzheimer's Disease (AD) but it is unclear what role they play on disease progression and functional decline.
Objectives: To:

  1. evaluate the presence of neuropsychiatric symptoms in AD patients and;
  2. investigate whether symptoms predict rapid functional decline in AD.
Method: We followed 178 AD patients consecutively admitted to the Unit for Dementia Diagnosis at IRCCS Foundation Santa Lucia, Rome, Italy (mean age 73.0 (SD:8.2), 70.8% men). Symptoms were evaluated at first visit with the Neuropsychiatric Inventory (NPI). As a marker of disease progression, functional decline was defined as a loss of ≥1 functional abilities in basic (ADL) or Instrumental (IADL) Activities of Daily Living.
Results: The most common NPI symptoms in AD were depression (46.6%), apathy (55.1%), and anxiety (38.2%). Functional decline on ADL and IADL was more common in patients with baseline anxiety, depression, apathy, disinhibition, irritability and difficulties sleeping. 30 (25.2%) patients had no NPI symptom at baseline. Only 6.7% of patients without neuropsychiatric symptoms declined in ADL over follow-up. Compared to these patients, the risk of functional decline was higher in patients with depression (HR=3.9: 0.9-16.3), anxiety (HR=5.4: 1.2-23.2), disinhibition (HR=6.4: 1.2-33.4), and irritability (HR=4.5: 1.0-19.1) after adjustment for age, sex, education, and baseline cognitive and functional status.
Conclusions: Neuropsychiatric symptoms can be used as markers to predict functional decline in AD patients. Patients free from neuropsychiatric symptoms are less likely to suffer a rapid decline in functioning. These results may help long-term planning of care and treatment in AD.


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