Severe chronic obstructive pulmonary disease (COPD) is associated with lower cognitive function in older adults, according to research from Mount Sinai School of Medicine. Researchers compared cognitive performance in over 4,150 adults with and without COPD and found that individuals with severe COPD had significantly lower cognitive function than those without, even after controlling for confounding factors such as comorbidities.
The results were published in the July 15 issue of the American Journal of Respiratory and Critical Care Medicine.
"Our findings should raise awareness that adults with severe COPD are at greater risk for developing cognitive impairment, which may make managing their COPD more challenging, and will likely further worsen their general health and quality of life," wrote lead author of the study, William W. Hung, M.D., M.P.H., assistant professor at Mount Sinai School of Medicine.
Patients with COPD may experience periods of hypoxialow oxygen levelsthat might lead to brain abnormalities that could reduce cognitive capacity. Alternatively, hypoxia may cause or exacerbate diseases that are characterized by cognitive impairment, such as Alzheimer's disease. Although past studies have observed a higher rate of cognitive impairment among adults with COPD, the relationship has not been formally tested longitudinally in large populations until now.
"We wanted to determine whether the observed relationship between COPD and cognitive impairment was, in fact, something we could document over time, and if so, we wanted to determine whether the degree to which it occurred was significant," said Dr. Hung.
To do so, Dr. Hung and colleagues obtained data from the Health and Retirement Study, a national prospective biennial survey of Americans 50 and older. They included data from survey takers who had undergone cognitive testing in 1996 and again in 1998, 2000 or 2002.
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| Contact: Keely Savoie kgsavoie@gmail.com 315-212-8620 American Thoracic Society Source:Eurekalert |