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Endovascular Treatment of Upper Gastrointestinal Bleeding Detected with the Use of CT Angiography

100%
Szopiński P., Terlecki M., Pleban E.
Polish Journal of Surgery
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2009
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vol. 81
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issue 3
156-158
EN
The authors present a case of a patient with a history of open repair of abdominal aortic aneurysm with a tube graft three years previously presenting with gastrointestinal bleeding as a sign of aortoduodenal fistula. The diagnosis of the fistula was established on the basis of computed tomography angiography, with no source of bleeding found in endoscopy. Endovascular treatment was undertaken due to high operative risk (ASA class IV). A tube stentgraft was implanted covering both anastomoses of the previously implanted prosthesis. In 2-year observation no recurrent gastrointestinal bleeding was noticed.
2
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Endovascular Management of Aortic Dissections Involving the Common Carotid and Subclavian Arteries

100%
Wąsiewicz M., Kasielska-Trojan A., Timler D., Stelągowski M.
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vol. 85
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issue 2
90-95
EN
Aortic dissection is a life-threatening condition, in which rupture of the internal wall of the aorta is observed. The aim of the study was to present the techniques used in patients with type A Stanford aortic dissection treatment by means of carotid-carotid by-pass surgery and implantation of the aortic stent-graft with intentional occlusion of the left common carotid and subclavian arteries. Surgical methods were presented on the basis of three patients treated at the Department of Vascular, General and Oncological Surgery, Memorial Copernicus Hospital in Łódź. Different carotid- carotid bypass grafting techniques were also described. Our own clinical observations demonstrated that patients with retro-pharyngeal carotid-carotid bypass did not report dysphagia, and retropharyngeal grafting seems to be the optimal method considering patients in whom stent-grafts cause left carotid artery occlusion.
3
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Effects of stent-graft geometry and blood hematocrit on hemodynamic in Abdominal Aortic Aneurysm

75%
Polańczyk A., Podyma M., Stefańczyk L., Zbiciński I.
Chemical and Process Engineering
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2012
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issue 1
4
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Effects of stent-graft geometry and blood hematocrit on hemodynamic in Abdominal Aortic Aneurysm

75%
Polańczyk A., Podyma M., Stefańczyk L., Zbiciński I.
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EN
CFD technique was used to determine the effect of a stent-graft spatial configuration and hematocrit value on blood flow hemodynamic and the risk of a stent-graft occlusion. Spatial configurations of an endovascular prosthesis placed in Abdominal Aortic Aneurysm (AAA) for numerical simulations were developed on the basis of AngioCT data for 10 patients. The results of calculations showed that narrows or angular bends in the prosthesis as well as increased hematocrit affects blood flow reducing velocity and WSS which might result in thrombus development.
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