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KMID : 0384320080290120925
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Korean Journal of Family Medicine
2008 Volume.29 No. 12 p.925 ~ p.931
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Polypharmacy and Inappropriate Drug Prescription in Community-dwelling Elderly
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Lee Jun-Seok
Lee Jai-Eun
Jung Ki-Yun
Ma Seung-Hyun
Kim Mee-Young
Yoo Sang-Ho
Yoon Jong-Lull
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Abstract
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Background: Due to rapidly growing elderly population, there are increasing numbers of older persons with multiple chronic disorders and geriatric problems arising from polypharmacy. In this study we tried to find out the state of polypharmacy and inappropriate drug prescription and their related factors in community-dwelling elderly by review of drugs taken by older persons visiting a day health center.
Methods: From April 2007 to July 2007, 80 subjects of 65 year-old or over with chronic illness who visited a elderly-wellness and health care center were randomly sampled. All of them were surveyed by structured questionnaires, medical records review, pill counts about all medications they are taking and experience of adverse drug reactions. And all the prescribed medications were reviewed or their drug prescription’s appropriateness for each elderly according to Beers criteria. Data results were evaluated by frequency and correlation analyses.
Results: The average counts of drugs taken by elderly with chronic disorders were 7.23, minimum 1 to maximum 27 drugs a day. Patients experienced more adverse effects significantly when more prescribed medications were taken (P=0.005), and patients with lack of information about their drugs had taken increased number of medications (P<0.001). Referred to Beers criteria, inappropriate cases of prescription were observed in 26 persons. Those drugs were NSAIDs including aspirin in 17 subjects (21%), amitrityline in 3 (4%), short-acting benzodiazepines in 3 (4%), long acting benzodiazepines in 2 (3%), and anticholinergic antihistamine in 1 (1%).
Conclusion: Polypharmacy is very common in community-dwelling elderly with chronic disorders. More medications were related to more adverse drug reactions and lack of information about their drugs related to increased number of drug taking. High proportion of inappropriate drug prescriptions was observed in the elderly, which may have resulted from poor education concerning geriatric care of the medical personnels. (J Korean Acad Fam Med 2008;29:925-931)
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KEYWORD
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elderly, chronic illness, polypharmacy, adverse drug reaction (ADR), Beers Criteria
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