نتایج جستجو برای: carotid bifurcation
تعداد نتایج: 69840 فیلتر نتایج به سال:
Purpose: Kissing aneurysms (KAs) are caused by the rare incidence of two aneurysms with different cervixes mutually contacting each other, with craniotomy surgical clipping having been reported as difficult. The objective was to investigate the treatment outcome of single-stage coil embolization using an Enterprise stent for internal carotid artery KA. Materials and Methods: The subjects consis...
The role of the carotid bifurcation chemoreceptors in mediating the cerebrovascular response to altered arterial PCO2 has been suggested to be large. In the present study the cerebrovascular response to raised PCO2 was measured in a group of baboons before and after bilateral inactivation of the carotid bodies. The results suggest that these chemoreceptors do play a part in the cerebral vasodil...
An 84-year-old man presented with a history of repeated syncope and decreased heart rate and blood pressure over the last month. On physical examination, a mass sized ~3×3 cm was palpable in the left submandibular area; the mass was hard, poorly mobile, without tenderness or local skin irritation. The computed tomography angiography examination revealed a soft tissue mass in the neck, at the le...
We evaluate the results of stenting and angioplasty on carotid bifurcation stenotic lesions using protection systems, emphasizing the indications and technical aspects. Seventy-nine patients, mean age 64.5 years were treated from February,1998 to March, 2003. All patients were included in NASCET study criteria. Forty three patients were treated without the protection systems and thirty six were...
Cardiac-gated black blood MRI of the carotid artery bifurcation in normal human subjects shows signal within the lumen suggesting wall thickening or atherosclerotic plaque. This signal was believed to be artifactual, arising from complex flow patterns present at the carotid bifurcation. Computer simulation of the hemodynamics and black blood multislice image acquisition in a model of the caroti...
Ulcerated A theromatous Plaques of the Carotid A rtery Bifurcation • The clinical diagnosis of an ulcerated plaque at the bifurcation of the common carotid artery is based on: mid-carotid bruit, cholesterol or platelet emboli in the retina, transient ischemic attacks particularly with amaurosis fugax, and a reversible neurological deficit. In this series, thrombosis in situ was the final phenom...
Aneurysm of extracranial carotid artery is an uncommon clinical disease and that presenting as a ruptured aneurysm is extremely rare. This entity represents a challenge to treatment strategy. A 54 year old hypertensive male presented with painful, pulsatile mass in left neck. Duplex scan revealed the ruptured left carotid artery at its bifurcation. Angiogram depicted clear picture of ruptured c...
The management of atherosclerotic carotid occlusive disease for stroke prevention has entered a time of dramatic change. Improvements in medical management have begun to challenge traditional interventional approaches to asymptomatic carotid stenosis. Simultaneously, carotid artery stenting (CAS) has emerged as an alternative to carotid endarterectomy (CE). Finally, multiple factors beyond degr...
cannulation of the carotid artery can be performed on the right or left side in accordance with vascular pathology. If the proper flow in the carotid artery cannot be restored by arch repair, which can occur occasionally when the repair of a dissected innominate artery bifurcation is not possible, an aorta-carotid bypass may be necessary and easily performed with a carotid side-graft used for c...
bifurcation of the carotid artery (carotid sinus) may provoke reflex bradycardia, fall of blood pressure and fainting.8 Hippocrates, Galen and Mattheus Curtius also observed that it was not the compression of the arteries in the neck, but of their bifurcation (carotid sinus) that might induce fainting or sleep. I therefore agree with the suggestion of Balourdas that ifthe old Greek physicians o...
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