Incidence and Preventability of Adverse Drug Events Among Older Persons in the Ambulatory Setting
TL;DR: Adverse drug events are common and often preventable among older persons in the ambulatory clinical setting and prevention strategies should target the prescribing and monitoring stages of pharmaceutical care.
Abstract: ContextAdverse drug events, especially those that may be preventable, are among
the most serious concerns about medication use in older persons cared for
in the ambulatory clinical setting.ObjectiveTo assess the incidence and preventability of adverse drug events among
older persons in the ambulatory clinical setting.Design, Setting, and PatientsCohort study of all Medicare enrollees (30 397 person-years of
observation) cared for by a multispecialty group practice during a 12-month
study period (July 1, 1999, through June 30, 2000), in which possible drug-related
incidents occurring in the ambulatory clinical setting were detected using
multiple methods, including reports from health care providers; review of
hospital discharge summaries; review of emergency department notes; computer-generated
signals; automated free-text review of electronic clinic notes; and review
of administrative incident reports concerning medication errors.Main Outcome MeasuresNumber of adverse drug events, severity of the events (classified as
significant, serious, life-threatening, or fatal), and whether the events
were preventable.ResultsThere were 1523 identified adverse drug events, of which 27.6% (421)
were considered preventable. The overall rate of adverse drug events was 50.1
per 1000 person-years, with a rate of 13.8 preventable adverse drug events
per 1000 person-years. Of the adverse drug events, 578 (38.0%) were categorized
as serious, life-threatening, or fatal; 244 (42.2%) of these more severe events
were deemed preventable compared with 177 (18.7%) of the 945 significant adverse
drug events. Errors associated with preventable adverse drug events occurred
most often at the stages of prescribing (n = 246, 58.4%) and monitoring (n
= 256, 60.8%), and errors involving patient adherence (n = 89, 21.1%) also
were common. Cardiovascular medications (24.5%), followed by diuretics (22.1%),
nonopioid analgesics (15.4%), hypoglycemics (10.9%), and anticoagulants (10.2%)
were the most common medication categories associated with preventable adverse
drug events. Electrolyte/renal (26.6%), gastrointestinal tract (21.1%), hemorrhagic
(15.9%), metabolic/endocrine (13.8%), and neuropsychiatric (8.6%) events were
the most common types of preventable adverse drug events.ConclusionsAdverse drug events are common and often preventable among older persons
in the ambulatory clinical setting. More serious adverse drug events are more
likely to be preventable. Prevention strategies should target the prescribing
and monitoring stages of pharmaceutical care. Interventions focused on improving
patient adherence with prescribed regimens and monitoring of prescribed medications
also may be beneficial.
Citations
More filters
TL;DR: 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.
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.
2,414 citations
TL;DR: It is suggested that adhering to current CPGs in caring for an older person with several comorbidities may have undesirable effects and could create perverse incentives that emphasize the wrong aspects of care for this population and diminish the quality of their care.
Abstract: ContextClinical practice guidelines (CPGs) have been developed to improve the
quality of health care for many chronic conditions. Pay-for-performance initiatives
assess physician adherence to interventions that may reflect CPG recommendations.ObjectiveTo evaluate the applicability of CPGs to the care of older individuals
with several comorbid diseases.Data SourcesThe National Health Interview Survey and a nationally representative
sample of Medicare beneficiaries (to identify the most prevalent chronic diseases
in this population); the National Guideline Clearinghouse (for locating evidence-based
CPGs for each chronic disease).Study SelectionOf the 15 most common chronic diseases, we selected hypertension, chronic
heart failure, stable angina, atrial fibrillation, hypercholesterolemia, diabetes
mellitus, osteoarthritis, chronic obstructive pulmonary disease, and osteoporosis,
which are usually managed in primary care, choosing CPGs promulgated by national
and international medical organizations for each.Data ExtractionTwo investigators independently assessed whether each CPG addressed
older patients with multiple comorbid diseases, goals of treatment, interactions
between recommendations, burden to patients and caregivers, patient preferences,
life expectancy, and quality of life. Differences were resolved by consensus.
For a hypothetical 79-year-old woman with chronic obstructive pulmonary disease,
type 2 diabetes, osteoporosis, hypertension, and osteoarthritis, we aggregated
the recommendations from the relevant CPGs.Data SynthesisMost CPGs did not modify or discuss the applicability of their recommendations
for older patients with multiple comorbidities. Most also did not comment
on burden, short- and long-term goals, and the quality of the underlying scientific
evidence, nor give guidance for incorporating patient preferences into treatment
plans. If the relevant CPGs were followed, the hypothetical patient would
be prescribed 12 medications (costing her $406 per month) and a complicated
nonpharmacological regimen. Adverse interactions between drugs and diseases
could result.ConclusionsThis review suggests that adhering to current CPGs in caring for an
older person with several comorbidities may have undesirable effects. Basing
standards for quality of care and pay for performance on existing CPGs could
lead to inappropriate judgment of the care provided to older individuals with
complex comorbidities and could create perverse incentives that emphasize
the wrong aspects of care for this population and diminish the quality of
their care. Developing measures of the quality of the care needed by older
patients with complex comorbidities is critical to improving their care.
2,247 citations
Cites methods from "Incidence and Preventability of Adv..."
...When we developed a treatment plan for a hypothetical patient using a conservative regimen created in accordance with CPGs, she was treated with multiple medications with high complexity, with the attendant risks of medication errors, adverse drug events, drug interactions, and hospitalization.(4,58-60) The recommended regimens may present the patient with an unsustainable treatment burden, making independent self-management and adherence difficult....
[...]
TL;DR: The goals of the present report are to address different methods of measuring adherence, the prevalence of medicationNonadherence, the association between nonadherence and outcomes, the reasons for nonad adherence, and finally, interventions to improve medication adherence.
Abstract: Medication adherence usually refers to whether patients take their medications as prescribed (eg, twice daily), as well as whether they continue to take a prescribed medication. Medication nonadherence is a growing concern to clinicians, healthcare systems, and other stakeholders (eg, payers) because of mounting evidence that it is prevalent and associated with adverse outcomes and higher costs of care. To date, measurement of patient medication adherence and use of interventions to improve adherence are rare in routine clinical practice. The goals of the present report are to address (1) different methods of measuring adherence, (2) the prevalence of medication nonadherence, (3) the association between nonadherence and outcomes, (4) the reasons for nonadherence, and finally, (5) interventions to improve medication adherence.
1,394 citations
Cites background from "Incidence and Preventability of Adv..."
...holidays monthly or more often and have frequent omissions; and (6) take few or no doses....
[...]
TL;DR: It is shown that well-designed interprofessional intervention studies that focus on enrolling high-risk older patients with polypharmacy have shown that they can be effective in reducing aspects of unnecessary prescribing with mixed results on distal health outcomes.
Abstract: Introduction: Polypharmacy, defined as the use of multiple drugs or more than are medically necessary, is a growing concern for older adults. MEDLINE and EMBASE databases were searched from January 1, 1986 to June 30, 2013) to identify relevant articles in people aged > 65 years. Areas covered: We present information about: i) prevalence of polypharmacy and unnecessary medication use; ii) negative consequences of polypharmacy; and iii) interventions to improve polypharmacy. Expert opinion: International research shows that polypharmacy is common in older adults with the highest number of drugs taken by those residing in nursing homes. Nearly 50% of older adults take one or more medications that are not medically necessary. Research has clearly established a strong relationship between polypharmacy and negative clinical consequences. Moreover, well-designed interprofessional (often including clinical pharmacist) intervention studies that focus on enrolling high-risk older patients with polypharmacy have sh...
1,279 citations
Cites background from "Incidence and Preventability of Adv..."
...As one might expect, common drug classes associated with ADEs include anticoagulants, NSAIDs, cardiovascular medications, diuretics, antibiotics, anticonvulsants, benzodiazepines, and hypoglycemic medications [13,15,16]....
[...]
...Drug-drug interactions are a frequent cause of preventable ADEs and medication-related hospitalizations [16,20]....
[...]
TL;DR: Improving communication between outpatients and providers may help prevent adverse events related to drugs, and many are preventable or ameliorable.
Abstract: Background Adverse events related to drugs occur frequently among inpatients, and many of these events are preventable. However, few data are available on adverse drug events among outpatients. We conducted a study to determine the rates, types, severity, and preventability of such events among outpatients and to identify preventive strategies. Methods We performed a prospective cohort study, including a survey of patients and a chart review, at four adult primary care practices in Boston (two hospital-based and two community-based), involving a total of 1202 outpatients who received at least one prescription during a four-week period. Prescriptions were computerized at two of the practices and handwritten at the other two. Results Of the 661 patients who responded to the survey (response rate, 55 percent), 162 had adverse drug events (25 percent; 95 percent confidence interval, 20 to 29 percent), with a total of 181 events (27 per 100 patients). Twenty-four of the events (13 percent) were serious, 51 (28...
1,228 citations
References
More filters
01 Jan 2000
TL;DR: Boken presenterer en helhetlig strategi for hvordan myndigheter, helsepersonell, industri og forbrukere kan redusere medisinske feil.
Abstract: Boken presenterer en helhetlig strategi for hvordan myndigheter, helsepersonell, industri og forbrukere kan redusere medisinske feil.
16,469 citations
TL;DR: Bernard Rosner's FUNDAMENTALS of BIOSTATISTICS is a practical introduction to the methods, techniques, and computation of statistics with human subjects that prepares students for their future courses and careers.
Abstract: Bernard Rosner's FUNDAMENTALS OF BIOSTATISTICS is a practical introduction to the methods, techniques, and computation of statistics with human subjects. It prepares students for their future courses and careers by introducing the statistical methods most often used in medical literature. Rosner minimizes the amount of mathematical formulation (algebra-based) while still giving complete explanations of all the important concepts. As in previous editions, a major strength of this book is that every new concept is developed systematically through completely worked out examples from current medical research problems.
4,624 citations
Book•
01 Jan 1982
TL;DR: Bernard Rosner's "Fundamentals of BIOSTATISTICS" as mentioned in this paper is a practical introduction to the methods, techniques, and computation of statistics with human subjects.
Abstract: Bernard Rosner's FUNDAMENTALS OF BIOSTATISTICS is a practical introduction to the methods, techniques, and computation of statistics with human subjects. It prepares students for their future courses and careers by introducing the statistical methods most often used in medical literature. Rosner minimizes the amount of mathematical formulation (algebra-based) while still giving complete explanations of all the important concepts. As in previous editions, a major strength of this book is that every new concept is developed systematically through completely worked out examples from current medical research problems.
4,438 citations
Book•
01 Jan 1985
TL;DR: Clinical Epidemiology is a book dedicated to H.L. Mencken, Kurt Vonnegut, Jr., Douglas Adams, and the Emperor's New Clothes and Physicians and others who wish to recognize key clinical epidemiologic features of the diagnosis and management of patients will benefit from reading.
Abstract: I might have guessed that a book dedicated to "H.L. Mencken, Kurt Vonnegut, Jr., Douglas Adams, and the Emperor's New Clothes" would be fun to read. It was! Readers will sense the authors' enthusiasm for their subject on each page, from the preface to the final chapter. The authors prepared this book for "users" rather than "doers" of clinical research. Physicians and others who wish to recognize key clinical epidemiologic features of the diagnosis and management of patients will benefit from reading Clinical Epidemiology. Those who wish to conduct actual research studies will need to look elsewhere for a detailed discussion of clinical epidemiologic methodology. In this review, I will mention
3,791 citations