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Variations in angioplasty and bypass surgery

H Johansen1, C Nair, G Taylor

  • 1Health Statistics Division at Statistics Canada, Ottawa. johahel@statcan.ca

Health Reports
|February 2, 1999
PubMed
Summary

About 15% of acute myocardial infarction (AMI) patients received revascularization procedures within six months. Rates varied by sex, age, and province, with women and older patients less likely to undergo bypass surgery.

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Area of Science:

  • Cardiovascular medicine
  • Health services research

Background:

  • Acute myocardial infarction (AMI) is a leading cause of mortality.
  • Revascularization procedures like angioplasty and bypass surgery are critical treatments for AMI.
  • Understanding patterns of care is essential for improving outcomes.

Purpose of the Study:

  • To describe the rates and timing of revascularization procedures in Canadian heart attack patients.
  • To identify demographic and regional variations in the utilization of these procedures.

Main Methods:

  • Utilized Statistics Canada's Person-Oriented Information Data Base.
  • Linked hospital discharge records for patients with a primary diagnosis of AMI.
  • Followed patients for six months to assess rates of percutaneous transluminal coronary angioplasty (PTCA) and coronary artery bypass graft (CABG) surgery.

Main Results:

  • Of approximately 24,000 AMI patients, 14.9% underwent revascularization within six months (8.7% PTCA, 6.7% CABG).
  • Women had lower bypass rates than men; angioplasty rates were similar.
  • Revascularization rates decreased with age and were higher in western Canadian provinces.

Conclusions:

  • Significant variations in revascularization rates exist among AMI patients in Canada.
  • Further research is needed to understand and address disparities in treatment based on sex, age, and geography.

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