Coronary artery bypass surgery in Canada.

Area of Science:

• Cardiovascular Surgery
• Health Services Research
• Public Health

Background:

• Coronary artery bypass surgery (CABS) is a critical intervention for ischemic heart disease (IHD).
• Understanding trends in CABS utilization is essential for healthcare planning and resource allocation.
• Previous studies have highlighted regional variations in surgical procedures, but comprehensive national trends require ongoing analysis.

Purpose of the Study:

• To analyze trends in the volume and rates of coronary artery bypass surgery (CABS) in Canada between 1981-82 and 1986-87.
• To compare CABS rates and outcomes across different demographic groups (sex, age) and geographic locations.
• To examine the relationship between CABS and hospitalizations for ischemic heart disease (IHD).

Main Methods:

• Retrospective analysis of national Canadian surgical data from 1981-82 to 1986-87.
• Calculation of CABS rates per 100,000 population, stratified by sex, age, and census metropolitan area (CMA).
• Comparison of CABS trends with hospital separation rates for ischemic heart disease (IHD).

Main Results:

• Total CABS procedures increased by 39% nationally from 1981-82 to 1986-87, with rates rising to 43.2 per 100,000 population.
• CABS rates showed significant regional disparities, ranging from 62.4 per 100,000 in Halifax to 131.8 in Ottawa-Hull.
• Procedure rates increased in older age groups (65-74, 75+) and decreased in the 35-54 age group, while remaining stable for the 55-64 group.

Conclusions:

• Canadian CABS utilization saw a substantial increase during the study period, outpacing the rise in IHD hospitalizations.
• Geographic and age-related variations in CABS rates suggest potential influences of resource availability, service demand, and physician practice patterns.
• Further research is needed to elucidate the factors driving these observed trends and disparities in cardiovascular surgical care.