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Alberta Procedures 2003 - 2007

Changes in Diagnostic Cardiac Catheterization and Revascularization Rates for Coronary Heart Disease
in Alberta Regional Health Authorities 2003-2007.

Click here for PDF of this report (349 KB).

Background: The Alberta Provincial Project for Outcomes Assessment in Coronary Heart Disease (APPROACH) maintains a clinical registry of all patients undergoing diagnostic cardiac catheterizations and subsequent cardiovascular procedures in Alberta. Although Alberta appears “on average” to be doing well relative to other Canadian provinces, this study addresses the equitability of cardiac care delivery across Alberta health regions in 2003-2007.

Objectives: To examine the age- and sex-adjusted rates of diagnostic cardiac catheterization, percutaneous coronary intervention (PCI) and coronary artery bypass graft (CABG) surgery in Alberta health regions.

Methods: Data from the APPROACH registry were used to calculate age- and sex- adjusted procedure rates for persons aged 20 and older in each health region. 1996 StatCan data were used for adjusting rates by age and sex. We used maps, tables and graphs to show the distribution of rates in the Alberta regional health authorities in 2003- 2007.

Results and Conclusions: Provincial catheterization rates and PCI rates decreased between 2003 and 2007. The overall age- and sex-adjusted catheterization rate was 480 per 100,000 in 2003, 515 per 100,000 in 2004 and 496 per 100,000 in 2005, 482 per 100,000 in 2006 and 493 per 100,000 in 2007. The overall age- and sex-adjusted PCI rates for Alberta residents increased from 186 per 100,000 in 2003 to 204 per 100,000 in 2004 then decreased to 192 per 100,000 in 2005, 182 per 100,000 in 2006, and then increased to 186 per 100,000 in 2007. The provincial age- and sex-adjusted CABG rates for Alberta residents decreased from 84 per 100,000 in 2003 to 73 per 100,000 in 2004, to 72 per 100,000 in 2005, to 65 per 100,000 in 2006 and to 57 per 100,000 in 2007. The ratio of PCI procedures performed for every CABG procedure increased from 2.21 in 2003 to 2.80 in 2004 and to 2.67 in 2005, to 2.80 in 2006 and to 3.35 in 2007. For both CABG and PCI procedures, rates tended to be lower in regions serviced by facilities in the Calgary Health Region than in regions serviced by Capital Health.