Health status after myocardial revascularization: inferior results in women

Area of Science:

• Cardiovascular Surgery
• Outcomes Research
• Health Disparities

Background:

• Coronary artery bypass grafting (CABG) is a common procedure for myocardial revascularization.
• Understanding long-term outcomes and health status differences between sexes post-CABG is crucial.
• Previous studies suggest potential sex-based differences in cardiovascular disease management and outcomes.

Purpose of the Study:

• To compare long-term health status and survival probabilities between female and male patients after CABG.
• To investigate the influence of comorbidities, particularly diabetes, on sex-based outcomes post-CABG.
• To identify potential factors contributing to observed differences in health status and survival.

Main Methods:

• Prospective follow-up of 1,335 patients (287 female, 1,048 male) for 2-18 years post-CABG.
• Health status index calculated via annual questionnaires.
• Kaplan-Meier survival analysis and comparison of hospital mortality rates, stratified by sex and diabetes status.

Main Results:

• Female patients were older and had a higher incidence of diabetes (28.6% vs. 16.1%).
• Hospital mortality was significantly higher in women, especially those under 60.
• Female patients exhibited lower 5, 10, and 15-year survival probabilities and a lower health status index compared to men.
• In diabetic patients, hospital mortality was 11.0% for women vs. 3.6% for men, with 10-year survival of 0.42 for women vs. 0.56 for men.
• No significant differences in outcomes were observed between sexes in non-diabetic patients.

Conclusions:

• Women report lower health status and have reduced survival probabilities after myocardial revascularization compared to men.
• The higher incidence of diabetes in women appears to be a significant factor contributing to excess mortality post-CABG.
• These findings highlight important sex-based disparities in long-term outcomes following coronary artery bypass grafting.