Evolving epidemiology of injecting drug use-associated infective endocarditis: a regional centre experience

Tung, Matthew K.Y, Light, Melanie, Giri, Rinky, Lane, Stephen, Appelbe, Allen, Harvey, Craig and Athan, Eugene 2015, Evolving epidemiology of injecting drug use-associated infective endocarditis: a regional centre experience, Drug and alcohol review, vol. 34, no. 4, pp. 412-417, doi: 10.1111/dar.12228.

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Title Evolving epidemiology of injecting drug use-associated infective endocarditis: a regional centre experience
Author(s) Tung, Matthew K.Y
Light, Melanie
Giri, Rinky
Lane, Stephen
Appelbe, Allen
Harvey, Craig
Athan, EugeneORCID iD for Athan, Eugene orcid.org/0000-0001-9838-6471
Journal name Drug and alcohol review
Volume number 34
Issue number 4
Start page 412
End page 417
Total pages 6
Publisher Wiley
Place of publication North Melbourne, Vic.
Publication date 2015-07
ISSN 1465-3362
Keyword(s) Staphylococcus aureus
heart valve
intravenous substance abuse
needle-exchange programs
Science & Technology
Life Sciences & Biomedicine
Substance Abuse
Summary INTRODUCTION AND AIMS: Injecting drug use (IDU) is a major risk factor for infective endocarditis (IE). An understanding of the epidemiology of IE and IDU is vital for delivery of health care for this disease. Our aim was to examine the rates of IDU-associated IE (IDU-IE) in a single centre over the last 12 years. DESIGN AND METHODS: Retrospective analysis of two cohorts of consecutive patients (n = 226) admitted with IE from 2002 to 2013. Numbers of cases and rates of IE were compared between two cohorts (2002-2006 and 2009-2013). Rate ratios were calculated using Poisson distributions. Poisson regression was used to examine relationship over time. RESULTS: One hundred thirty cases of endocarditis were seen in the first observation period (6 IDU-IE) and 96 in the second observation period (15 IDU-IE). The estimated incidence rate of IE had fallen from 10.1 to 6.45 per 100, 000 person-years [rate ratio 0.64, 95% confidence interval (CI) 0.48, 0.85]. In contrast, the estimated incidence rate of IDU-E has risen from 0.48 to 0.79 per 100, 000 person-years (rate ratio 1.65, 95% CI 0.59, 4.57). Incidence rate regression suggests that the number of IDU-IE cases is expected to increase by a factor of 1.25 (95%CI 1.09-1.44) for each increase of 1 year. DISCUSSION AND CONCLUSIONS: Over the last decade, there has been a decrease in incidence rate and total number of cases of IE but a rise in rate and number of cases of IDU-IE. This may indicate increasing IDU or increased rates of endocarditis in intravenous drug users in this region. This finding may inform health-care planning in the area.
Language eng
DOI 10.1111/dar.12228
Field of Research 119999 Medical and Health Sciences not elsewhere classified
Socio Economic Objective 929999 Health not elsewhere classified
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2015, Wiley
Persistent URL http://hdl.handle.net/10536/DRO/DU:30075938

Document type: Journal Article
Collections: Faculty of Health
School of Medicine
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