Experimental comparative study of arterial implants made of silicone reinforced with polyester fabric and expanded polytetrafluoroethylene (PTFE) in rabbits aorta.

Objectives: the aim of this study was to compare the outcomes of a new silicone vascular prostheses with PTFE vascular prostheses, on a rabbit experimental model.

Methods: forty rabbits underwent infra-renal aorta replacement with 4 mm diameter prostheses, twenty animals with PDMS and twenty animals with PTFE (control group). Retrograde aortic angiography was performed to assess patency.

Long-term Results of Endovascular Treatment of Chronic Type B Aortic Dissection by Closure of the Primary Tear.

Background: The role of thoracic endovascular aortic repair (TEVAR) in the treatment of chronic type B aortic dissection is controversial. Some advocate open surgery, based on the premise that all tears must be treated, and others prefer branched endografts with the same premise. However, TEVAR, with closure of the primary tear in the thorax, has shown good results in some centers.

Aspirin responsiveness safely lowers perioperative cardiovascular risk.

Introduction: Vascular surgeries are related to high cardiac morbidity and mortality, and the maintenance of aspirin in the perioperative period has a protective effect. The purpose of this study was to evaluate the association between preoperative platelet aggregability and perioperative cardiovascular (CV) events.

Methods: A preoperative platelet aggregation test was performed on an impedance aggregometer in response to collagen and to arachidonic acid (AA) for 191 vascular surgery patients under chronic use of aspirin.