Effects of revascularization within 14 days of hospital admission due to acute coronary syndrome on 1-year mortality...

Area of Science:

• Cardiology
• Interventional Cardiology
• Clinical Outcomes Research

Background:

• Current acute coronary syndrome (ACS) guidelines recommend early revascularization.
• Evidence supporting early revascularization often excludes patients with prior coronary artery bypass graft (CABG) surgery.
• Coronary interventions in patients with prior CABG are associated with lower success and higher complication rates, necessitating specific evidence.

Purpose of the Study:

• To evaluate if revascularization within 14 days improves 1-year survival in ACS patients with previous CABG.
• To assess the efficacy of an early invasive strategy in a high-risk patient subset.

Main Methods:

• A national registry cohort of 10,469 patients (<80 years) admitted for non-ST-elevation ACS in Sweden was analyzed.
• One-year mortality data were obtained from the Swedish National Cause of Death Registry.
• Multivariable logistic regression and propensity score analysis were used to compare outcomes between patients revascularized within 14 days (n=4269) and those treated conservatively (n=6200).

Main Results:

• Unadjusted 1-year mortality was 5.4% in the revascularized group versus 13.1% in the conservatively treated group.
• Revascularization within 14 days was independently associated with a significant reduction in 1-year mortality (Relative Risk [RR] 0.67; 95% Confidence Interval [CI], 0.56-0.81; P < 0.001).
• The findings were robust after adjusting for multiple variables and propensity scores.

Conclusions:

• Early revascularization (within 14 days) significantly reduces 1-year mortality in patients with prior CABG admitted for ACS.
• These findings support the adoption of an early invasive strategy for this specific high-risk patient population.
• The study provides crucial evidence for optimizing ACS management in patients with previous coronary artery bypass graft surgery.