Abstract:
PURPOSE:Adverse drug events (ADEs) are an important cause of preventable hospitalizations among elderly individuals taking high-risk medications. The objective of the study was to identify health care system factors that affect the risk of digoxin toxicity for older adults on digoxin. METHODS:We conducted a prospective cohort study of older adults within the Pennsylvania Pharmaceutical Assistance Contract for the Elderly (PACE) program, which provides comprehensive drug benefits for older adults with low income. Subjects were interviewed at the time of enrollment regarding the management and coordination of their health care as well as medication comprehension. Hospitalizations were identified by linking patient identifiers to a state-wide registry. Trained abstractors reviewed discharge summaries of possible digoxin related ADEs. Unadjusted and adjusted incidence rate ratios (IRR) were calculated based on person-months of exposure using Poisson regression models, with variances adjusted for within subject repeated measures. RESULTS:We enrolled a total of 2030 adults on digoxin from May 2002 to June 2003. A total of 34 hospitalizations due to digoxin toxicity occurred, equivalent to 1.12 hospitalizations per 1000 person-months of exposure. Adjusting for hospitalization in the past 2 months, age, total number physicians prescribing any medications in past 3 months, total number of pharmacies filling medications in past 3 months, and number of unique prescriptions filled in the past month had a 4.25-fold increased risk of subsequently experiencing digoxin toxicity (IRR 95%CI 1.95, 9.27). CONCLUSIONS:The risk of digoxin toxicity-related hospitalization, while low, is higher in the post-hospital period.
journal_name
Pharmacoepidemiol Drug Safjournal_title
Pharmacoepidemiology and drug safetyauthors
Haynes K,Hennessy S,Localio AR,Cohen A,Leonard CE,Kimmel SE,Feldman HI,Strom BL,Metlay JPdoi
10.1002/pds.1680subject
Has Abstractpub_date
2009-01-01 00:00:00pages
28-35issue
1eissn
1053-8569issn
1099-1557journal_volume
18pub_type
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journal_title:Pharmacoepidemiology and drug safety
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pub_type: 杂志文章,评审
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pub_type: 杂志文章,多中心研究,随机对照试验
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