Atrial Fibrillation Linked to Dementia
(study shows the highest risk)
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New findings confirm atrial fibrillation (AF) is independently associated with the risk of all forms of dementia, including Alzheimer's and other senile and vascular dementia types. According to a study published in the April edition of the HeartRhythm Journal, the presence of atrial fibrillation indicated higher mortality rates in all dementia subtypes; however, mortality risk was most prominent in the youngest population studied.
The study evaluated 37,025 patients from the Intermountain Heart Collaborative Study database between the ages of 60 and 90 years over a 5-year period. The study population included all patients who were seen by cardiologists for the development of atrial fibrillation and different types of dementia including vascular, senile, Alzheimer's and other non-specified types. During the five-year period, a total of 10,161 patients (27 percent) developed atrial fibrillation and 1,535 (4.1 percent) developed dementia. Researchers also assessed the impact of AF on mortality risk in those patients diagnosed with dementia.
Study findings revealed AF is independently associated with all dementia types and, across all dementia states, cognitive decline occurred earlier in patients with AF versus no AF. Among the 764 patients who developed both AF and dementia, AF developed first, or in some cases simultaneously with dementia diagnosis. Most notably, the greatest risk of dementia was seen in the youngest AF patient group (less than 70 years old). Furthermore, the greatest increased risk of mortality was also observed in the youngest patient group. Read more: ktla.com
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