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Researchers refine guidelines designed to identify Alzheimer’s early

July 22, 2012--Mayo Clinic researchers, the National Institute on Aging and the Alzheimer’s Association published new guidelines in April for the diagnosis of Alzheimer’s disease. They separated the progression of Alzheimer’s into three stages: (1) pre-clinical (or pre-symptomatic) Alzheimer’s disease, (2) mild cognitive impairment (MCI) due to Alzheimer’s disease, and (3) Alzheimer’s disease dementia.

At this year’s conference, Mayo Clinic researchers reported on the validity of Stage 2 MCI. This stage was designed to differentiate patients with early Alzheimer’s disease from those with other cognitive issues. Researchers studied 156 people who met the criteria for MCI. Of those, 67 percent had evidence of early Alzheimer’s disease.

“These results indicate that the new diagnostic criteria for MCI due to Alzheimer’s works quite well,” said study author Ronald Petersen, M.D., Ph.D, a Mayo Clinic neurologist. “Ultimately, though, the validity of these new criteria will be determined by the long-term outcome of these subjects.”