Outcome after Hybrid Outflow Interventions for Chronic Limb-threatening Ischemia

Background and Aims: Because chronic limb-threatening ischemia (CLTI) is often associated with multilevel arterial disease, it usually requires revascularization at different sites of the limb vasculature. We aim to assess the outcome of the hybrid interventions including open surgical revascularization together with outflow segment percutaneous transluminal angioplasty (PTA) in patients with chronic limb-threatening ischemia. Material and Methods: This study included all hybrid outflow-PTA interventions (n = 80) on patients suffering from CLTI performed in Helsinki University Hospital between 2003 and 2015. Follow-up ended on 31 December 2019. Patient data were prospectively collected into our vascular registry and scrutinized retrospectively. Thirty-one patients (39%) suffered from rest pain (Rutherford category IV) and 49 patients (61%) had ischemic ulcers (Rutherford category V–VI). The most common open surgical procedure was femoral endarterectomy (n = 63, 79%) and the most common endovascular procedure was superficial femoral artery percutaneous transluminal angioplasty (n = 65, 81%). Mean follow-up time was 56 months (range: 4 days–183 months). Results: Limb salvage was at 30 days—92%, at 1 year—91%, and at 5 and 10 years—86%. Survival and amputation-free survival were at 30 days—93% and 86%, at 1 year—80% and 76%, at 5 years—51% and 48%, and at 10 years—21% and 21%. Wound healing at 3, 6, and 12 months was 48%, 71%, and 87%. Freedom from target lesion revascularization was at 30 days—97%, at 1 year—88%, at 5 years—72%, and at 10 years—66%. Conclusion: Hybrid outflow revascularization is an important tool in the vascular surgeon’s armamentarium for treatment of patients with multilevel arterial disease causing chronic limb-threatening ischemia.