1,720,959 research outputs found
Stent-graft treatment of late stenosis of the left common carotid artery following thoracic graft placement.
No full textWe report the case of a patient with subtotal occlusion of the origin of the left common carotid artery (CCA) following thoracic graft placement. Retrograde endovascular placement of a stent-graft by minimal cervical access was undertaken to repair the occlusive lesion of the left CCA and prevent future complications of endoluminal thoracic reconstruction. The retrograde endovascular repair of CCA lesions, as other authors have already suggested, may be the treatment of choice in "high-surgical-risk" patients. In these cases where the ostium of supra-aortic trunks is compromised following thoracic aorta stent-graft migration, endoluminal placement of a stent-graft in the CCA can guarantee both maintenance of carotid flow and thoracic stent-graft fixation
Antegrade access in a stented common femoral artery: feasible but with a real bleeding risk.
No full textAssociation between multiple cardiovascular risk factors and endothelium dysfunction with myocardial infarction before 40 years of age
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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
Endovascular repair of thoracic aortic disease with the EndoFit stent-graft: short and midterm results from a single center.
No full textPURPOSE: To analyze the outcomes of endovascular treatment of thoracic aortic pathologies performed at a single center with the EndoFit thoracic stent-graft system.
METHODS: From January 2002 to January 2007, 41 patients (33 men; mean age 69.3+/-9.7 years, range 48-84) were treated for thoracic aortic disease with the EndoFit stent-graft system. Patient data were retrieved from a retrospective review of hospital records. Indications for treatment were progression of aneurysm size in atherosclerotic aneurysms (n = 24, mean aneurysm diameter 7.19+/-1.48 cm), acute contained aortic rupture (n = 5), aortic dissection (n = 6), penetrating atherosclerotic ulcers (n = 4), post-traumatic pseudoaneurysm (n = 1), and post coarctation repair aneurysm (n = 1).
RESULTS: The EndoFit stent-graft was successfully deployed in all 41 patients. The in-hospital and 30-day mortality rate was 7.3% (3 patients). Three (7.3%) postoperative endoleaks were recorded: a proximal type Ia and a distal Ib both resolved spontaneously at 1 and 3 months, respectively. The third patient had a persistent type Ia endoleak; conversion was necessary after 1 year. There was only 1 case of spinal ischemia, with consequent lower extremity weakness; no paraplegia was observed. During a mean 24.8-month follow-up, 2 secondary type Ia endoleaks were treated with additional stent-grafts. There were 7 (17%) deaths during follow-up. At 2 years, overall patient survival by Kaplan-Meier analysis was 70%; aneurysm-related survival was 89%.
CONCLUSION: Endovascular treatment of vascular disease involving the descending thoracic aorta can be safely performed with the EndoFit thoracic stent-graft system
Influence of the timing of cardiac catheterization and the amount of contrast media on acute renal failure after cardiac surgery
No full textClip-based arterial haemostasis after antegrade common femoral artery puncture.
No full textBACKGROUND: Given the frequent involvement of infra-popliteal arteries, an ipsilateral antegrade common femoral artery puncture (ACFAP) is usually preferred to a contralateral retrograde femoral access for percutaneous transluminal angioplasty (PTA) in patients with critical limb ischemia (CLI). Because of the frequent difficulty to get a sufficient manual pressure on the puncture site, ACFAP is burdened by a high number of bleeding local complications, including retroperitoneal haematoma. We report a series of patients who consecutively received a clip-based arterial closure device after ACFAP and ipsilateral PTA for CLI.
METHODS: Thirty patients (73+/-6 years; 18 men; 100% diabetes) admitted to our hospital because of CLI consecutively underwent peripheral PTA after an ACFAP and received a clip-based arterial closure device. Time to haemostasis was defined as the interval elapsed between clip deployment and first observed haemostasis. All patients were mobilized after 6 h. Follow-up was 30 days.
RESULTS: All patients were on double anti-platelet therapy. At the end of the procedure, Activation Clotting Time was 226+/-37 s. Procedural success in delivering the clip was 100%. Time to haemostasis was 21+/-19 s. No major local vascular complications and in particular no retroperitoneal bleeding were documented. All patients could be discharged within the following 3 days. No major complications were noted during a 30 days follow-up.
CONCLUSIONS: The use of a clip-based arterial closure device after ACFAP for peripheral PTA in CLI seems to be safe and effective
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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