Aspects of antithrombotic and anticoagulant therapies in patients undergoing endovascular procedures for lower extremity arterial disease

The aging of the population, the increasing prevalence of important risk factors of atherosclerosis, like diabetes, and the declining mortality of acute cardiovascular conditions lead to increased peripheral arterial disease incidence. At the same time, cases showing a severe decline in quality of life or danger of limb loss get more prevalent that demands vascular interventions. In such cases, revascularization is recommended, and consequently, in the last decade, an ex-pansion in endovascular procedures can be seen. Considering these procedures, besides a technical success, the risk of new stenosis or occlusion may be imminent. This may be accounted for the progression of atherosclerosis and the controlled vascular injury caused by the procedure itself that induces vascular remodeling (neointima hyperplasia) and thrombotic hyperactivity. The long-term vascular patency is closely associated with the success of an optimal medical treatment strategy. Its effect is considered essential prior to the endovascular procedure, perioperatively, and in the phase of long-term follow-up of the affected patients. In this scenario, antithrombotic and anticoagulant therapy regimes bear particular relevance. The use of this kind of drugs is challenged by (i) the uncertainty of dy-namic changes of balance between the thrombotic reocclusion and the risk of bleeding, (ii) the interplay of treatment strategy related to concomitant diseases, (iii) the relative lack of high-level scientific pieces of evidence guiding daily routine. The narrative review makes an effort to provide new findings and an analysis of this therapeutic field.