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Hybrid and open repair for patients with acute limb ischemia of the lower extremities.

BACKGROUND: Hybrid revascularization procedures for acute limb ischemia (ALI) are becoming increasingly common, bibliographic data on outcomes is however sparse.

METHODS: Single-center, retrospective study of consecutive patients with ALI that underwent either surgical treatment (ST) or hybrid treatment (HT) between January 2015 and December 2021. The composite outcome of amputation-free survival (AFS) was the primary endpoint. Technical success, overall survival, amputation, and re-intervention rates were the secondary endpoints.

RESULTS: During the study period 266 patients (mean age 70.2±14.5 years; 49.6% males) were treated for ALI, 67.3% undergoing ST and 32.7% HT. HT was more frequently used in patients with a previous vascular intervention in the index limb (38/87; 43.7% HT vs. 40/179; 22.3% ST, P=0.001), a stent- or stent graft-occlusion (16/87; 18.4% HT vs. 10/179; 5.6% ST, P=0.002) and/or a bypass occlusion (16/87; 18.4% HT vs. 16/179; 8.9% ST, P=0.043). Technical success was higher in the OR group (75/87; 86.2% HT vs. 173/179; 96.6% ST, P=0.003). Amputation-free survival rate during follow-up (43/87; 49.4% HT vs. 94/179; 52.5% ST, HR 0.76, 95% CI: 0.49 to 1.18, P=0.22) and overall survival (32/87; 36.8% HT vs. 84/179; 46.9% ST, HR 0.81, 95% CI: 0.49 to 1.34, P=0.41) were comparable between the two groups. No statistical differences were observed between the groups regarding major amputation (19/87; 21.8% HT vs. 15/179; 8.4% ST, HR 0.85, 95% CI: 0.33 to 2.23, P=0.74) or reintervention during follow-up (45/87; 51.7% HT vs. 65/179; 36.3% ST, HR 0.92, 95% CI: 0.56 to 1.51, P=0.73).

CONCLUSIONS: Hybrid and open surgical treatments showed comparable results in our cohort, even though significantly more patients undergoing HT presented with stent and bypass occlusions rather than de-novo lesions.

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