Cardiovascular morbidity in rheumatoid arthritis patients in North Canterbury, New Zealand 1999-2008

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Abstract

Aim: Cardiovascular disease is a substantial contributor to increased morbidity and mortality in rheumatoid arthritis (RA). The aim of this audit was to determine the rate of cardiovascular events in a cohort of newly diagnosed RA patients. Method: The inpatient clinical database from Christchurch Hospital, Christchurch, New Zealand, was searched using the International Classification of Diseases 9th Revision (ICD9) and 10 codes representing RA and cardiovascular disease between 1 January 1999 and 31 December 2008. Notes were reviewed with additional demographic and medication data sought. Outpatient data for RA patients was collated from the Rheumatology Department's letter database. Results: Four hundred and six patients were identified with combined ICD9 or 10 codes for RA and ischemic heart disease, of whom 194 had a confirmed myocardial event. Of these, 34 were diagnosed with RA between January 1999 and December 2008 prior to their myocardial event. Kaplan-Meier analysis showed risk of a cardiovascular event at 1 and 10 years was 0.64% and 9.4%, respectively. There were 26 confirmed deaths in the study period. The risk of death at 1 and 10 years was 0.48% and 8.16%, respectively. Conclusion: We have shown a relatively low prevalence of cardiovascular events in this RA population diagnosed within a 10 year period. This is consistent with other reports and likely reflects the short follow-up period. Prospective longer-term studies will be required to further investigate the relative contribution of disease activity and other parameters to cardiovascular events in patients with early RA. © 2012 The Authors International Journal of Rheumatic Diseases © 2012 Asia Pacific League of Associations for Rheumatology and Wiley Publishing Asia Pty Ltd.

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APA

Khan, E. A. R., Stamp, L. K., O’Donnell, J. L., & Chapman, P. T. (2013). Cardiovascular morbidity in rheumatoid arthritis patients in North Canterbury, New Zealand 1999-2008. International Journal of Rheumatic Diseases, 16(1), 19–23. https://doi.org/10.1111/1756-185x.12008

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