Efficacy and safety of different revascularization strategies in patients with non-ST-segment elevation myocardial infarction with multivessel disease: a systematic review and network meta-analysis.

The optimal timing of revascularization in non-ST-segment elevation myocardial infarction (NSTEMI) with multivessel disease (MVD) remains controversial. We investigated the impact of different revascularization strategies on clinical outcomes to assess the optimal revascularization strategy for these patients. We performed a network meta-analysis of cohort studies comparing revascularization strategies in NSTEMI with MVD. Effect sizes were calculated as odds ratios (ORs) using a random-effects model. The primary efficacy outcome was all-cause mortality and the primary safety outcome was recurrent myocardial infarction. Eight eligible studies involving 34,151 patients receiving four revascularization strategies were analyzed. Compared to conventional culprit-only revascularization (COR), planned complete multi-vessel percutaneous coronary intervention during a second hospitalization (MV-PCI) reduced the risk of major adverse cardiovascular events (MACEs) (MV-PCI vs. COR: OR = 0.53; 95% CI: 0.38-0.74) and decreased all-cause mortality (MV-PCI vs. COR: OR = 0.53; 95% CI: 0.30-0.93) and the likelihood of repeat revascularization (MV-PCI vs. COR: OR = 0.55; 95% CI: 0.37-0.82). However, compared to COR, immediate complete revascularization (ICR) but not MV-PCI was associated with reduced risk of recurrent MI (COR vs. ICR: OR = 1.39; 95% CI: 1.07-1.81; MV-PCI vs. COR: OR = 0.64; 95% CI: 0.40-1.01). Compared to MV-PCI: COR and staged complete revascularization during index PCI (SCR) increased the risk of cardiovascular mortality (MV-PCI vs. COR: OR = 0.48; 95% CI: 0.34-0.70; MV-PCI vs. SCR: OR = 0.62; 95% CI: 0.40-0.96). COR also had significantly higher cardiovascular mortality compared to ICR (COR vs. ICR: OR = 1.38; 95% CI: 1.02-1.85). Complete revascularization is more effective compared to culprit-only revascularization for most follow-ups.