Femoropopliteal Artery Stent Thrombosis

Original Title: Femoropopliteal Artery Stent Thrombosis. Report from the Excellence in Peripheral Artery Disease Registry. Reference: Subhash Banerjee et al. Circ Cardiovasc Interv. 2016 Feb;9(2):e002730.

 

There is limited information on peripheral stent thrombosis and involved factors.

This study analyzed 604 stent procedures in femoropopliteal territory form the multicenter registry “Excellence in Peripheral Artery Disease”.

Stent thrombosis occurred in 26 of the 604 patients (4.3%) at median 6 month follow up post procedure.

Stent thrombosis was more frequent in men and when the lesion originally treated was a chronic total occlusion.

There were no differences in stent thrombosis between drug-coated and bare metal stents (4.4% vs 3.4%; p=0.55) but there were differences between self-expandable covered stents vs. conventional bare metal stents (10.6% vs 3.4%; p=0.02).

Thrombosis was associated to a much higher risk of adverse events over the same treated limb (HR, 4.99; CI 95% 2.31 to 10.77; p<0.001).

Multivariable analysis showed that chronic total occlusion (OR, 3.46; IC 95% 0.98 a 12.20; p=0.05) and in-stent restenosis (OR, 5.30; IC 95%, 1.83 a 15.32; p=0.002) were independently associated with stent thrombosis.

Conclusion
This multicenter registry of peripheral intervention showed that femoropopliteal stent thrombosis is 4.3% and is associated to the treatment of chronic total occlusions and restenosis of previous stents. Thrombosis is strongly associated to adverse events in this lower limb.

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