This is the December 31, 2007, issue of Elder Law FAX, a free newsletter published by the Elder Law Practice of Timothy L.
Takacs
Psychiatrists Release Updated Guidelines for Treating
Patients With Dementia
New guidelines for the treatment of persons suffering from Alzheimer's
disease and other dementias have been released by the American Psychiatric
Association (APA). The guidelines update a previous edition issued by the
association in 1997.
The chair of the guidelines working group, Peter V. Rabins,
MD, from Johns Hopkins University School of Medicine, in Baltimore, Maryland, is
co-author of the popular book The 36-Hour Day: A Family Guide to Caring for
Persons with Alzheimer Disease, Related Dementing Illnesses, and Memory Loss in
Later Life.
Since the publication of the first edition of the
guidelines, in 1997, advances in the diagnosis and treatment of dementia have
been made.
There has been some preliminary evidence that the use of positron
emission tomography (PET) scanning may be advantageous in the diagnosis of
Alzheimer's disease. In fact, Medicare has recently approved for reimbursement
PET scans for the indication of differentiating between Alzheimer's disease and
fronto-temporal dementia.
Similarly, studies using magnetic resonance imaging (MRI) to
measure the size of key brain structures (among them the hippocampus and
amygdala) have suggested that a smaller size of these structures in persons
with only minor cognitive complaints can identify individuals who will have
diagnosable Alzheimer's dementia within three years.
Despite much research, no significant advances have been
made in the use of biological markers for the diagnosis of dementia, the APA guidelines
note.
Although advances have been made in the area, genetic
testing for apolipoprotein E4 (APOE4) is not generally recommended for use in diagnosis.
Apolipoprotein E4 is one form of a gene on chromosome 19 that is more common in
individuals with Alzheimer's disease than in elderly individuals without
dementia and is associated with late-onset Alzheimer's disease occurring with
or without a family history. However, it is also found in many elderly patients
who do not have dementia and is not found in many patients who do have
Alzheimer's disease.
Since the 1997 guidelines were published, three
cholinesterase inhibitor drugs -- galantamine, rivastigmine, and donepezil -- are
now approved by the U.S. Food and Drug Administration (FDA) and are used for
the treatment of Alzheimer's disease. There is no convincing evidence that any
one cholinesterase inhibitor has greater efficacy than another. It remains
unclear whether use of these drugs slows progression of the disease, delays
nursing home placement, or alters mortality.
As the new guidelines state, "Whenever cholinesterase
inhibitors are prescribed, patients and their families should be apprised of
the limited potential benefits as well as the potential costs."
In an interview with Medscape Psychiatry, Dr. Rabins said,
"I think that we have been able to strengthen many of the recommendations
that were made, because there have been a number of confirming studies."
Nonetheless, "There's really nothing new. It's just that the evidence is
stronger."
An important change in the new guidelines from the earlier
edition is that Vitamin E is no longer recommended as a treatment for
Alzheimer' disease, and new studies have demonstrated health risks to patients
who take it at higher doses.
The new guidelines also caution physicians about the use or
overuse of certain anti-psychotic drugs, with particular emphasis placed on
side effects these medications may cause.
Moreover, analyses of clinicaltrials of the
second-generation antipsychotics aripiprazole, olanzapine, quetiapine, and
risperidone, as well as of first-generation antipsychotics, have found an
increased mortality when used in elderly patients with dementia. These concerns
have led to warnings on the second-generation antipsychotics.
The 55-page guidelines include an executive summary in which
recommendations are coded according to three levels of degree of clinical
evidence.
The section that follows this is an extensive guide for
developing and implementing a stage-specific treatment plan for the individual
patient. The last section details specific clinical features influencing the
treatment plan.
Link to Guidelines: http://www.psych.org/psych_pract/treatg/pg/prac_guide.cfm