George Trellopoulos

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PURPOSE To determine via a meta-analysis if the success rates for percutaneous EVAR using the "preclose" technique with suture-mediated vascular closure devices (SMCDs) are higher for smaller sheaths [≤ 18-F outer diameter (OD)] than for larger sheaths (≥20-F). METHODS All English-language studies on percutaneous EVAR outcomes related to sheath sizes(More)
OBJECTIVE To evaluate and compare the outcome after endovascular abdominal aortic aneurysm repair (EVAR) with the newly released Endurant endograft system in patients with different aortoiliac anatomic characteristics. METHODS We conducted a prospective observational study assigning patients with infrarenal abdominal aortic aneurysm (AAA) treated with the(More)
PURPOSE To compare the immediate suprarenal neck angulation change between the Ovation stent-graft, with its inflatable sealing rings, and a stent-graft with a conventional sealing mechanism. METHODS A case-control study was conducted in which 30 consecutive patients (mean age 67 years; all men) with abdominal aortic aneurysm (AAA) treated with the(More)
Endovascular aortic aneurysm repair with the Endurant™ stent-graft system has been shown to be safe and effective in high-risk surgical patients with complex suprarenal and/or infrarenal abdominal aortic aneurysm anatomy. The wireformed M-shaped stent architecture and proximal springs with anchoring pins theoretically permit optimal sealing in shorter and(More)
The Ovation Abdominal Stent Graft System is a trimodular endoprosthesis recently introduced for the endovascular repair of abdominal aortic aneurysm (AAA). It uncouples the stages of stent-graft fixation and sealing with the suprarenal fixation achieved with a long, rigid anchored stent while the sealing onto the neck is accomplished via a pair of(More)
PURPOSE To evaluate whether postoperative long-term oral anticoagulation affects the durability of endovascular aneurysm repair (EVAR) and whether it is associated with an increased incidence of endoleak and subsequent need for reintervention. METHODS A literature search was performed to identify studies of abdominal aortic aneurysm patients undergoing(More)
The isolation of the aneurysm sac from systemic pressure and its consequent shrinkage are considered criteria of success after endovascular repair (EVAR). However, the process of shrinkage does not solely depend on the intrasac pressure, the predictive role of which remains ambiguous. This brief review summarizes the additional pathophysiological mechanisms(More)
Hybrid endografting in endovascular abdominal aortic aneurysm repair (EVAR) is defined as the process of placing a series of two or more different types of covered stents, usually to treat a complex abdominal aortic aneurysm (AAA) or a primary or secondary endoleak. We describe the treatment of a type III, a type Ib, and a type Ia endoleak in three patients(More)
PURPOSE To report a case controlled analysis of endovascular aneurysm repair (EVAR) outcomes using the crossed-limb (CxL) endovascular configuration vs. the straight-limb configuration (SLC). METHODS From January 2007 to July 2012, 27 patients (25 men; mean age 73.7±7.2 years, range 53-82) were treated by EVAR with the CxL technique. These patients were(More)