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Memorial University - Electronic Theses and Dissertations 5
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Document Description
TitleSerious adverse drug events in patients presenting to emergency departments and admitted to hospitals in Newfoundland and Labrador
AuthorSikdar, Khokan Chandra, 1973-
DescriptionThesis (Ph.D.)--Memorial University of Newfoundland, 2011. Medicine
Paginationxxv, 277 leaves : ill., map.
SubjectDrugs--Side effects--Age factors--Newfoundland and Labrador; Drugs--Side effects--Newfoundland and Labrador--Prevention; Hospital patients--Classification; Emergency medical services--Utilization--Newfoundland and Labrador
Degree GrantorMemorial University of Newfoundland. Faculty of Medicine
Spatial CoverageCanada--Newfoundland and Labrador
NotesIncludes bibliographical references.
AbstractThe primary objective of this research was to examine the extent of adverse drug events (ADEs) in three age-related subgroups of patients (children aged 17 years, adults aged 18 years and elderly aged 65 years) either presenting to emergency departments (EDs) or admitted to hospitals in the Canadian province of Newfoundland and Labrador (NL). As secondary objectives, this research classified ADEs according to severity and preventability (wherever possible) and identified patients' demographic and clinical characteristics that can predict occurrence of ADEs. -- This dissertation research was comprised of three empirical studies, each of which led to a manuscript for publication. The first and second studies used retrospective reviews of patients' ED charts to determine prevalence, severity, and preventability of ADEs among children and adults presenting to EDs. The third study used a population-based retrospective cohort design over a 12-year period to detect adverse drug reactions (ADRs) using diagnosis codes in the hospital discharge abstract. The aim of this study was to determine the incidence of ADRs among elderly hospitalized patients and to assess patient-related risk of ADRs. -- We found that 2.1% (95% CI: 1.6-2.6) of pediatric ED visits and 2.4% (95% CI: 1.8-3.0) of adult ED visits were due to serious ADEs, of which 20% and 29%, respectively, were considered preventable. In the cohort of elderly hospitalized patients, the incidence of ADRs was 15.2 per 1, 000 person-years (95% CI: 14.8-15.7). Children with and without ADE-related ED visits were similar with respect to mean age and mean number of medications, whereas adults with ADE-related ED visits were older, prescribed more medications and had a higher number of comorbidities compared to their non-ADE counterparts. In elderly hospitalized patients, comorbidity from chronic diseases and the severity of patient's underlying illness, rather than advancing age and sex, increased the likelihood of recurrent events. The drug classes associated with or implicated to ADEs were dissimilar among the three age-related subgroups of patients. -- By comprising the findings of the three studies together, we concluded that an ADE prevention strategy should be targeted at patient-specific physiologic and functional characteristics, and high-risk medications, as opposed to focusing individual's chronological age.
Resource TypeElectronic thesis or dissertation
FormatImage/jpeg; Application/pdf
SourcePaper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries
RightsThe author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission.
CollectionElectronic Theses and Dissertations
Scanning StatusCompleted
PDF File(9.08 MB) --
CONTENTdm file name27479.cpd