Patients with chronic obstructive pulmonary disease (COPD) who are newly diagnosed with depression are less likely to adhere to their maintenance medications, and it appears to get worse with each new episode of depression, according to a new study published in the Annals of the American Thoracic Society.
COPD refers to a group of chronic lung diseases that block airflow, such as emphysema and chronic bronchitis. It is the third leading cause of death in the United States.
“With a prevalence of 17 to 44 percent, depression remains one of the most common, yet least recognized and under-treated, co-morbidities among patients with COPD,” said researcher Linda Simoni-Wastila, BSPharm, MSPH, Ph.D., a professor in the Department of Pharmaceutical Health Services Research at the University of Maryland School of Pharmacy in Baltimore.
“While depression has been associated with reduced maintenance medication use in other chronic conditions, this is the first study to document the role of causality of concomitant depression on reduced COPD medication adherence in older adults with COPD.”
For the study, titled “Adherence to Maintenance Medications Among Older Adults with Chronic Obstructive Pulmonary Disease: The Role of Depression,” researchers obtained Medicare administrative claims data from the Centers for Medicare & Medicaid Services Chronic Condition Data Warehouse. They analyzed a five percent random sample of Medicare beneficiaries (average age 68 years) from 2006 to 2012.
This included recipients of two years of continuous Medicare Parts A, B, and D coverage, and at least two prescription fills for inhaled corticosteroids, long-acting ß-agonists and long-acting anticholinergics.
Of the 31,033 beneficiaries meeting inclusion criteria, 20 percent were diagnosed with depression following COPD diagnosis. Average monthly adherence to COPD maintenance medications was low, reaching only 57 percent in the month following first fill, and decreasing to 25 percent within six months.
“We were able to identify depression as a risk factor for not using COPD medications, finding that older adults with respiratory disease have a tendency to not fully utilize the medications prescribed for their disease,” said Dr. Simoni-Wastila.
The researchers also noted that “clinicians who treat older adults newly-diagnosed with COPD should be aware of the development of depression, especially during the first six months.”
“It is our long-term hope that this study will help policymakers, practitioners, and patients and their caregivers think of their health more holistically, and to consider how the presence of one treated or untreated medical condition may influence the progression and management of other medical conditions.”
Source: American Thoracic Society
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June 26, 2016 at 01:18AM
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