Inappropriate medications in elderly ICU survivors: where to intervene?
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ABSTRACT: To describe the prevalence of unplanned hospitalizations caused by adverse drug reactions (ADRs) in older veterans and to examine the association between this outcome and polypharmacy after controlling for comorbidities and other patient characteristics. Retrospective cohort. Veterans Affairs Medical Centers. Six hundred seventy-eight randomly selected unplanned hospitalizations of older (aged ≥ 65) veterans between October 1, 2003, and September 30, 2006. Naranjo ADR algorithm, ADR preventability, and polypharmacy (0-4, 5-8, and ≥9 scheduled medications). Seventy ADRs involving 113 drugs were found in 68 (10%) hospitalizations of older veterans, of which 25 (36.8%) were preventable. Extrapolating to the population of more than 2.4 million older veterans receiving care during the study period, 8,000 hospitalizations may have been unnecessary. The most common ADRs that occurred were bradycardia (n = 6; beta-blockers, digoxin), hypoglycemia (n = 6; sulfonylureas, insulin), falls (n = 6; antidepressants, angiotensin-converting enzyme inhibitors), and mental status changes (n = 6; anticonvulsants, benzodiazepines). Overall, 44.8% of veterans took nine or more outpatient medications and 35.4% took five to eight. Using multivariable logistic regression and controlling for demographic, health-status, and access-to-care variables, polypharmacy (≥9 and 5-8) was associated with greater risk of ADR-related hospitalization (adjusted odds ratio (AOR) = 3.90, 95% confidence interval (CI) = 1.43-10.61 and AOR = 2.85, 95% CI = 1.03-7.85, respectively). ADRs, determined using a validated causality algorithm, are a common cause of unplanned hospitalization in older veterans, are frequently preventable, and are associated with polypharmacy.Journal of the American Geriatrics Society 12/2011; 60(1):34-41. DOI:10.1111/j.1532-5415.2011.03772.x · 4.22 Impact Factor
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ABSTRACT: Balanced and safe prescribing is difficult to achieve in frail older adults with multiple comorbid diseases. For this reason, great efforts have been made in the search for interventions to improve efficacy, safety and appropriateness of prescriptions in this vulnerable population. Among these interventions, the avoidance of medications that are considered to be inappropriate, i.e. potentially inappropriate medications (PIMs), has been considered a valuable treatment option. The aim of the present review was to summarize evidence about the use of explicit criteria for PIMs to reduce the risk of adverse drug reactions (ADRs) in older people. A PIM is a drug in which the risk of an adverse event outweighs its clinical benefit, particularly when there is evidence in favour of a safer or more effective alternative therapy for the same condition. Explicit criteria have been developed to identify PIMs, and among these, the Beers criteria have been the most frequently applied until recently. However, evidence suggests that such criteria can not easily be applied in European countries: several drugs listed in the 2003 Beers criteria were rarely prescribed or were not available in Europe and 2003 Beers-listed PIMs were not associated with ADRs in some studies. In the past few years, START/STOPP criteria have been developed and applied in several different studies and populations showing a greater ability to predict ADRs with respect to Beers criteria and to prevent potentially inappropriate prescribing. In 2012, Beers criteria have been updated using an evidence-based approach and future studies will investigate the impact of these and other criteria coming from ongoing studies on clinical outcomes relevant to geriatric populations.Drug Safety 01/2012; 35 Suppl 1:21-8. DOI:10.1007/BF03319100 · 2.62 Impact Factor
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ABSTRACT: Potentially inappropriate medications (PIMs) continue to be prescribed and used as first-line treatment for the most vulnerable of older adults, despite evidence of poor outcomes from the use of PIMs in older adults. PIMs now form an integral part of policy and practice and are incorporated into several quality measures. The specific aim of this project was to update the previous Beers Criteria using a comprehensive, systematic review and grading of the evidence on drug-related problems and adverse drug events (ADEs) in older adults. This was accomplished through the support of The American Geriatrics Society (AGS) and the work of an interdisciplinary panel of 11 experts in geriatric care and pharmacotherapy who applied a modified Delphi method to the systematic review and grading to reach consensus on the updated 2012 AGS Beers Criteria. Fifty-three medications or medication classes encompass the final updated Criteria, which are divided into three categories: potentially inappropriate medications and classes to avoid in older adults, potentially inappropriate medications and classes to avoid in older adults with certain diseases and syndromes that the drugs listed can exacerbate, and finally medications to be used with caution in older adults. This update has much strength, including the use of an evidence-based approach using the Institute of Medicine standards and the development of a partnership to regularly update the Criteria. Thoughtful application of the Criteria will allow for (a) closer monitoring of drug use, (b) application of real-time e-prescribing and interventions to decrease ADEs in older adults, and (c) better patient outcomes.Journal of the American Geriatrics Society 01/2012; 60(4):616-631. DOI:10.1111/j.1532-5415.2012.03923.x · 4.22 Impact Factor