Meta-Analysis Comparing Complete Versus Infarct-Related Artery Revascularization in Patients With ST-Elevation
Mohammed Osman1, Safi U Khan1, Peter D Farjo1
1Division of Cardiology, West Virginia University School of Medicine, Morgantown, West Virginia.
Insights
Complete revascularization (CR) significantly reduces major adverse cardiovascular events (MACE) in ST-elevation myocardial infarction (STEMI) patients compared to infarct-related artery revascularization (IRA). This benefit is primarily driven by lower rates of repeat revascularization in the CR group.
Area of Science:
- Cardiology
- Interventional Cardiology
- Clinical Trials
Background:
- The optimal revascularization strategy for ST-elevation myocardial infarction (STEMI) remains debated.
- Complete revascularization (CR) aims to address all significant coronary stenoses, while infarct-related artery revascularization (IRA) focuses on the culprit lesion.
Purpose of the Study:
- To conduct an updated meta-analysis comparing CR versus IRA in STEMI patients.
- To evaluate the impact of these strategies on major adverse cardiovascular events (MACE) and other clinical outcomes.
Main Methods:
- Systematic review and meta-analysis of ten randomized controlled trials.
- Inclusion of 7,423 patients with STEMI, comparing CR (3,574 patients) and IRA (3,849 patients).
- Follow-up duration of 2.0 ± 0.8 years, assessing MACE, mortality, stroke, repeat revascularization, myocardial infarction, and contrast-induced nephropathy.
Main Results:
- CR significantly reduced MACE compared to IRA (10.7% vs 18.6%, RR 0.64, p=0.002).
- CR was associated with substantially lower rates of repeat revascularization (4.0% vs 11.7%, RR 0.44, p<0.0001).
- No significant differences were observed in all-cause mortality, myocardial infarction, stroke, or contrast-induced nephropathy between the groups.
Conclusions:
- Complete revascularization (CR) is associated with a significant reduction in major adverse cardiovascular events (MACE) in STEMI patients compared to infarct-related artery revascularization (IRA).
- The observed benefit of CR is primarily attributed to a significant decrease in repeat revascularization rates.
- CR represents a favorable strategy for STEMI management, particularly in reducing the need for subsequent procedures.
Abstract:
A strategy of complete revascularization (CR) versus infarct-related artery revascularization (IRA) in patients with ST-elevation myocardial infarction (STEMI) continues to be a subject of debate. We performed an updated meta-analysis to compare the 2 strategies. Outcomes of interest included major adverse cardiovascular events (MACE), cardiovascular mortality, all-cause mortality, stroke, repeat revascularization, myocardial infarction, and contrast-induced nephropathy. Ten randomized trials including 7,423 patients (CR = 3,574 and IRA = 3,849), with a follow-up of 2.0 ± 0.8 years were included. There was a significant reduction in MACE with CR versus IRA (10.7% vs 18.6%, relative risk [RR] 0.64, 95% confidence interval [CI] 0.51 to 0.81, p = 0.002, I2 = 66%), with higher risk reduction with immediate versus stages revascularization (RR 0.40, 95% CI 0.32 to 0.5 vs RR 0.69, 95% CI 0.54 to 0.89, P-interaction = 0.002). Complete revascularization was associated with lower rates of repeat revascularization (4.0% vs 11.7%, RR 0.44, 95% CI 0.28 to 0.70, p <0.0001, I2 = 81%), and a nonsignificant trend toward lower cardiovascular mortality (2.8% vs 3.7%, RR 0.78, 95% CI 0.60 to 1.03, p = 0.08, I2 = 0%). However, there was no difference between the 2 strategies in all-cause mortality (4.6% vs 4.8%, RR 0.90, 95% CI 0.73 to 1.12, p = 0.36, I2 = 0%), myocardial infarction (5.2% vs 6.5%, RR 0.73, 95% CI, 0.58 to 1.08, p = 0.08, I2 = 30%), stroke (1.5% vs 1.2%, RR 1.14, 95% CI 0.56 to 2.29, p = 0.33, I2 = 14%), or contrast-induced nephropathy (1.6% vs 1.2%, RR 1.35, 95% CI 0.85 to 2.15, p = 0.78, I2 = 0%). In conclusion, CR in patients with STEMI is associated with significant reduction in MACE compared with IRA. This reduction is derived mainly by the low rates of repeat revascularization in the CR group.
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