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Dementia is a syndrome of progressive decline that relentlessly erodes
intellectual abilities, causing cognitive and functional deterioration
leading to impairment of social and occupational functioning. Because
Alzheimer's disease is the most common dementing illness in the United
States, it is used as a prototype for dementia in this course unless otherwise
stated.
An estimated 5 to 10 percent of the U.S. adult population age 65 and
older is affected by a dementing disorder, and incidence doubles every
5 years after age 65. Currently over 4.5 million Americans suffer from
dementing illness. The older population in the United States is increasing
dramatically. As of the year 2000, an estimated 35 million people were
age 65 and older. Researchers estimate that by 2050, 70 million Americans
will be age 65 or older, accounting for 1 in 5 Americans. More than 19
million Americans will be age 85 and older (ADEAR, 2005; NIA, NIH &
DHHS, 2003).
Despite its prevalence, dementia is often unrecognized or misdiagnosed
in its early stages. Many healthcare professionals, as well as patients,
their families and friends, mistakenly view the early symptoms of dementia
as inevitable consequences of aging. Failure to identify early stage dementia
can result in inappropriate treatment, hazardous situations, and needless
distress. Early recognition of dementia, however, not only can prevent
problems but also can allow the patient and family to plan for the future
and consider participation in trials of promising new therapies as they
are developed.
A number of characteristics distinguish early-stage dementia from normal
aging and from other syndromes that involve cognitive problems, including
depression. Certain triggers (clues, symptoms) should prompt a clinician
to conduct an initial assessment of mental and functional status to rule
out dementia rather than attribute it to apparent signs of decline due
to aging. Although the patient, family members, or others often bring
their concerns about symptoms to the clinician's attention, clinicians
also should be alert to such signs during office visits, hospitalization
and any other contact with patients. In asymptomatic persons who have
possible risk factors the clinician's judgment and knowledge of the patient's
current condition, history, and social situation (living arrangements,
support services, isolation) must guide the decision to initiate an assessment
for dementia
All dementias are not Alzheimer's disease and differentiation of depression,
delirium or reversible causes of dementia is essential. Early diagnosis
is vital and may result in reversal of some conditions, lessening of symptoms
in others or the opportunity to prepare one's self and family. The earlier
that Alzheimer's Disease is recognized and diagnosed, the greater the
gain in managing symptoms and developing a plan of care and treatment.
An early, accurate diagnosis of AD is especially important to patients
and their families because it helps them plan for the future and pursue
care options while the patient can still take part in making decisions.
This course provides information to help nurses and other clinicians
recognize those characteristics as symptoms suggestive of a dementing
disorder to conduct an initial assessment of mental and functional status.
The recommendations are intended for use by primary care clinicians, including
but not limited to family physicians, internists, geriatricians, psychologists,
psychiatrists, nurses, and nurse practitioners. Registered nurses need
to know how to do a complete and thorough assessment of patients and identify
dementia so that they can assist in treatment planning, care, and patient
education.
© 2001, 2005 NYSNA All rights reserved.
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