Percutaneous Vascular Interventions Versus Bypass Surgeries in Patients With Critical Limb Ischemia: A Comprehensive Meta-analysis

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Objective:The aim of our study was to compare percutaneous vascular interventions (PVI) versus bypass surgeries (BSX) in patients with critical limb ischemia (CLI).Background:Previous relevant reviews with limited numbers of included studies did not strictly confine the inclusion criteria to CLI, also involving patients with severe claudication, which may introduce bias in the decision-making of CLI revascularization. Current treatment strategies for CLI still remain controversial.Methods:We performed a meta-analysis of all available randomized controlled trials and observational clinical studies comparing PVI with BSX in CLI patients. Primary endpoints included overall survival, amputation-free survival, 30-day mortality, and major adverse cardiovascular and cerebrovascular events.Results:We identified 45 cohorts and 1 RCT in over 20,903 patients. In overall population, PVI reduced the risks of 30-day mortality [odds ratio (OR) 0.69, 95% confidence interval (CI) 0.51–0.95), major adverse cardiovascular and cerebrovascular events (OR 0.42, 95% CI 0.29–0.61), and surgical site infection (OR 0.31, 95% CI 0.19–0.51), but increased the risks of long-term all-cause mortality [hazard ratio (HR) 1.16, 95% CI 1.05–1.27) and primary patency failure (HR 1.31, 95% CI 1.08–1.58). When compared with autogenous BSX, PVI was also associated with additional increased risks of long-term death or amputation (HR 1.41, 95% CI 1.02–1.94) and secondary patency failure (HR 1.51, 95% CI 1.17–1.95). In patients with infrapopliteal lesions, we found PVI had inferior primary patency (HR 1.39, 95% CI 1.10–1.75) compared with BSX.Conclusion:For patients in good physical condition with long life-expectancy, BSX may represent a better choice compared with PVI, particularly when autogenous bypass is available. While enhanced perioperative care for cardiovascular events and surgical site should be considered in patients underwent BSX to achieve comparable short-term outcomes provided by PVI.

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