Search results for " Carotid Artery"

Comprehensive Anatomic Assessment of Ipsilateral Pterional Versus Contralateral Subfrontal Approaches to the Internal Carotid Ophthalmic Segment: A C…

2019

Objective Medially pointing aneurysms of the ophthalmic segment of the internal carotid artery (oICA) represent a neurosurgical challenge. Conventional ipsilateral approaches require internal carotid artery and optic nerve (ON) mobilization as well as anterior clinoidectomy (AC), all associated with increased surgical risk. Contralateral approaches could provide a better exposure of the superomedial aspect of the oICA, ophthalmic artery, and superior hypophyseal artery, sparing AC and internal carotid artery or ON mobilization. However, the microsurgical anatomy of this approach has not been systematically studied. In the present work, we exhaustibly analyzed the anatomic and morphometric c…

Severity of Asymptomatic Carotid Stenosis and Risk of Ipsilateral Hemispheric Ischaemic Events: Results from the ACSRS Study

2005

Objectives. This study determines the risk of ipsilateral ischaemic neurological events in relation to the degree of asymptomatic carotid stenosis and other risk factors. Methods. Patients (n = 1115) with asymptomatic internal carotid artery (ICA) stenosis greater than 50% in relation to the bulb diameter were followed up for a period of 6-84 (mean 37.1) months. Stenosis was graded using duplex, and clinical and biochemical risk factors were recorded. Results. The relationship between ICA stenosis and event rate is linear when stenosis is expressed by the ECST method, but S-shaped if expressed by the NASCET method. In addition to the ECST grade of stenosis (RR 1.6; 95% CI 1.21-2.15), histor…

ANP immunolocalization in internal carotid artery wall of subjects with and without atherosclerotic lesions

2008

LA DIAGNOSI DI DOLICOECTASIA DELLA CAROTIDE INTERNA E LE SUE IMPLICAZIONI CLINICO-PATOLOGICHE

2018

Cranial circulation of the pen-tailed tree shrewPtilocercus lowii and relationships of Scandentia

1994

The major cranial arteries and veins are described for a 30-mm crown-rump length fetus of the pen-tailed tree shrewPtilocercus lowii, and comparisons are made with cranial vessels reported in the tree shrewTupaia and with the vascular pattern reconstructed for primitive eutherians.Ptilocercus shares a number of derived features of the cranial circulation withTupaia, which, therefore, represent synapomorphies of tree shrews (Tupaiidae, Scandentia). Included are (1) the enclosure of the intratympanic portion of the internal carotid artery in a bony canal that is floored proximally and distally by the entotympanic and by the petrosal in between, (2) the enclosure of the intratympanic portion o…

Unusual Presentation of Bilateral Carotid Artery Dissection: The Importance of Reasoning Outside the Box

2021

A bilateral internal carotid artery dissection presenting with atypical symptoms of cerebral hypoperfusion has been rarely reported, especially in the absence of obvious precipitating factors. A middle-aged woman presented to the emergency department with a 2-day-history of progressive left arm numbness and weakness, confusion, disorientation and clumsiness worsened by upright position. A cerebral hypoperfusion condition was hypothesized and confirmed by a CT angiography, which showed bilateral internal carotid dissection with uncertain etiology. Screening for predisposing conditions to spontaneous carotid arteries dissection was basically negative. Regarding potential precipitating factors…

Proximal vertebral artery surgery. Results of treatment of ischemia of the rhombencephalon (hindbrain). Simultaneous carotid and vertebral artery dec…

2022

Surgical treatment of hindbrain ischemia is becoming the accepted surgical procedure in cases of stenosis of extracranial segments of vertebral arteries in the course of advanced atherosclerotic lesions in their initial segments (V1) or caused by external compression of these arteries in the canal formed by the transverse processes of cervical vertebrae. The latter is referred to as vertebrobasilar insufficiency (VBI). The transposition of the left vertebral artery to the common carotid artery in cases where stent graft implantation is necessary with coverage of the subclavian artery and possible blood supply disorders of both the hindbrain and the spinal cord has become important. In the D…

Operācijas rezultātu korelācija ar miega artērijas revaskularizācijas metodēm

2014

Anotācija Miega artēriju stenozes ķirurģiskai korekcijai karotīdu endarterectomijai ir būtiska nozīme insulta profilaksē. Promocijas darba mērķis: Izvērtēt miega artērijas endarterektomiju operāciju rezultātus, ņemot vērā intima-media slāņa biezumu un pacienta dzīves kvalitāti. Promocijas darbā autore veikusi pētījumu, kas atspoguļo karotīdu endarterektomijas operāciju rezultātus (komplikācijas, dzīves kvalitātes izmaiņas) un intīmas hiperplāzijas attīstību postoperatīvā periodā. Izveidota speciāla dzīves kvalitātes novērtēšanas anketa pacientiem ar miega artērijas sašaurinājumu. Pētījuma materiālu veido 104 pacienti, kuriem veiktas karotīdu endarterektomijas. Darbs veikts Latvijas Universi…

Effects of exercise training on adrenergic and cholinergic responses of rabbit carotid artery

2013

Emergency Endovascular Treatment of Petrous Carotid Artery False Aneurysm

2015

Abstract Introduction The management of ruptured intracranial false aneurysms (IFAs) might be tricky as any kind of treatment modality, surgical or endovascular, is burdened with significant challenges. A case report of the endovascular treatment of IFA in emergency setting is presented to provide more understanding of its pathophysiology as well as of the best operative work-up for petrous carotid artery reconstruction. Methods Technical notes from a left sided skull base abscess, involving and eroding the carotid canal and petrous carotid artery (PCA) resulting in an IFA are shown and analyzed. Results Balloon-assisted low viscosity Onyx embolization seems an effective method for the emer…