1,721,066 research outputs found
Unusual inflow sources and device introduction sites in aortic arch debranching.
No full textUnusual inflow sources and device introduction sites in aortic arch debranching.
Deriu G, Grego F, Frigatti P, Gerosa G, Piazza M, Bonvini S, Maturi C, Antonello M, Menegolo M.
Source
Department of Cardiac, Thoracic and Vascular Sciences, Vascular and Endovascular Surgery, University of Padua, Padua, Italy.
Abstract
AIM:
Aim of the study was to evaluate a single center experience on hybrid treatment for thoracic aortic diseases, including aortic arch and ascending aorta endografting needing a total debranching from descending thoracic aorta and an antegrade endograft deployment from left ventricle.
METHODS:
Between January 2004 and December 2010 48 patients underwent thoracic aorta endografting, with coverage of at least one supra-aortic artery, because of atherosclerotic, dissecting and post-traumatic aneurysms or complications of previous aortic surgery. Supra-aortic trunks revascularization was obtained from ascending aorta, common carotid arteries and, in three cases, from descending thoracic aorta since the unavailability of common inflow sites. In three cases the antegrade endograft introduction through left ventricle (transapical approach, 2 cases) or ascending aorta (one case) was the only possibility for a safe deployment.
RESULTS:
Three groups have been identified on the basis of the proximal landing zone. Group A (27 patients): zone 2; Group B (9 patients): zone 1; Group C (12 patients): zone 0. The 30 days mortality was respectively 7.4%, 0% and 16%. Post operative paraplegia occurred in the 7.4% of group A, respiratory insufficiency and infections were the main post-operative complications with an incidence reaching 30% in each group.
CONCLUSION:
Hybrid procedures on aortic arch represent a possible treatment for cases unfit for open surgery despite the complication rates and mortality are not negligible. In selected cases, the endografting can be extended up to beyond the landing zone 0 where an antegrade transventricular endograft deployment and a supra-aortic perfusion from descending thoracic aorta represent a feasible option
Synchronous carotid endarterectomy an retrograde endovascular treatment of brachiocephalic or common carotid artery stenosis
No full textAbstract
OBJECTIVES:
To retrospectively evaluate the safety and the long-term results of retrograde brachiocephalic and common carotid angioplasty and stenting (AS) performed for >70% stenosis synchronously with the carotid endarterectomy (CEA).
PATIENTS:
Sixteen patients operated between April 1999 and March 2002.
RESULTS:
14/16 procedures were successful. There was no neurological morbidity or mortality. Per-operative angiography showed the optimal stent positioning and patency of both proximal and distal arteries in all patients. In the follow-up, all patients showed patency of the treated vessels without restenosis and the absence of any cerebrovascular symptoms.
CONCLUSION:
Intra-operative retrograde AS combined with CEA is an effective, safe and durable alternative to conventional surgery when a tandem significant proximal lesion is identified in a patient with an high grade carotid stenosis
A New Endovascular Approach to Exclude Isolated Bilateral Common Iliac Artery Aneurysms
No full textAbstractA new endovascular procedure is reported to treat bilateral common iliac artery (CIA) aneurysms extending to both iliac bifurcations.The left internal iliac artery (IIA) was first embolised, two overlapped Viabahn endografts were delivered from the right IIA to the distal aorta and, finally, CIA aneurysms excluded using iliac contralateral leg and extension endografts from the distal aorta to both external iliac arteries, applying a combined ‘chimney-graft/double-barrel’ technique.This procedure may extend the limits of conventional iliac endografting by preserving blow flow to at least one IIA using off-label commercially available devices, avoiding associated open surgical procedures
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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