Clinical Outcomes and Risk Factors for Viabahn Stent Graft Occlusion in the Treatment of Visceral Arterial Injuries in Cancer Patients.

Purpose: This study aimed to evaluate the clinical outcomes of placing Viabahn stent grafts in visceral arterial injuries and identify the risk factors associated with stent graft occlusion.

Material and method: This multicenter, retrospective study included 29 procedures performed on 26 patients who underwent Viabahn stent graft placement between December 2017 and November 2022. We evaluated technical and clinical success rates, periprocedural complications, and stent graft patency using contrast-enhanced computed tomography. We conducted univariate analysis to examine the risk factors associated with Viabahn stent graft occlusion.

Result: The technical success rate was 96.6% (28 of 29), and the clinical success rate was 86.2% (25 of 29). The periprocedural complication rate was 17.2% (5 of 29), consisting of 4 mild adverse events and 1 patient death. The stent graft patency rates at 1, 3, 6, 12, and 24 months were 85%, 84.2%, 77.8%, 66.7%, and 50%, respectively. Univariate analysis indicated significant correlations between the lack of antiplatelet medication (P = .00074) and SG oversize ≥ 20% (P = .047).

Conclusions: This trial demonstrated the safety and effectiveness of Viabahn stent graft placement for visceral arterial injuries with high patency rates. Additionally, this study identified the lack of antiplatelet treatment and Viabahn oversize ≥ 20% as significant risk factors for Viabahn stent graft blockage in visceral arterial injuries.