Transient Vision Loss

2019 ◽  
pp. 83-88
Author(s):  
Matthew J. Thurtell ◽  
Robert L. Tomsak
Keyword(s):  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Physical Examination ◽  
Vision Loss ◽  
Internal Carotid Artery Stenosis ◽  
Management Approach ◽  
Common Causes ◽  
Transient Loss ◽  
The Common ◽  
Afferent Visual System

Transient vision loss is common and often results from a transient loss of blood supply to the afferent visual system, although there are many other potential causes. In this chapter, we begin by listing the common causes of transient vision loss. We next discuss the approach to transient vision loss. We emphasize the importance of the history, since physical examination and workup may be unrevealing. We then review the diagnostic evaluation, with a focus on investigations for transient vision loss that is vascular in etiology. Lastly, we discuss the management approach for patients with a cardiac source of embolism or internal carotid artery stenosis.

scholarly journals Direct Percutaneous Carotid Artery Stenting for a Patient with Absence of the Common Carotid Artery

2012 ◽  
Vol 18 (3) ◽  
pp. 320-325 ◽  
Author(s):  
S. Toyota ◽  
A. Wakayama ◽  
T. Yoshimine
Keyword(s):  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Common Carotid Artery ◽  
Carotid Artery Stenosis ◽  
Carotid Artery Stenting ◽  
Internal Carotid ◽  
Postoperative Radiotherapy ◽  
Internal Carotid Artery Stenosis ◽  
Tonsillar Carcinoma ◽  
The Common

A 54-year-old man with symptomatic internal carotid artery stenosis with absence of the common carotid artery (CCA), who had been treated with surgery and postoperative radiotherapy for tonsillar carcinoma, underwent direct percutaneous carotid artery stenting (CAS). To our knowledge, this is the first report of direct percutaneous carotid artery stenting (CAS) for a patient with absent CCA.

scholarly journals Carotid endarterectomy as the treatment of choice for clearing the internal carotid artery in transitional ischemic attacks

2021 ◽  
Author(s):  
Tibério Alves da Silva ◽  
Ana Carolina Soares de Lira ◽  
Bárbara Letícia Barreto Ramos Aragão ◽  
Luciana Karla, Dayanna Grazielle Maia Viana
Keyword(s):  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Carotid Endarterectomy ◽  
Internal Carotid ◽  
Internal Carotid Artery Stenosis ◽  
Motor Weakness ◽  
Eye Symptoms ◽  
The Common ◽  
Ischemic Attack ◽  
Carotid And Vertebral Arteries

Introduction: TIAs are ischemia, caused by stenosis of the carotid and vertebral arteries. Those who have a TIA are at risk of ischemic stroke and myocardial infarction, with carotid endarterectomy being an intervention. Objective: To analyze the benefits of carotid endarterectomy using drugs. Methods: Literature review, in bases such as PUBMED, MEDLINE, descriptors: “Endarterectomy”, “Ischemic Attack”, with operator “AND” and “OR”. Those with two descriptors were selected in the summary and date between 2010-2020, English / Portuguese language, resulting in: 17 articles. Results: The internal carotid artery (ICA) is located in the neck as a branch of the common carotid artery, being one of its branches the middle cerebral artery (MCA), the main artery affected in strokes and TIAs. Thus, ACI ischemia causes a risk of thrombosis in MCA, the treatment of carotid stenosis requires drugs to prevent atheroma, as well as antiplatelet drugs to reduce embolic events¹. In some cases, carotid endarterectomy or carotid stent implantation is complementary. Therefore, patients with TIA or stroke, who have “transient, fluctuating or persistent unilateral motor weakness or speech disorder or eye symptoms”, should undergo endarterectomy if they have moderate-severe stenosis of the extracranial internal carotid artery in the first days of presentation². Thus, endarterectomy is the treatment of choice and stenting should only be offered to symptomatic patients. Conclusion: Therefore, endarterectomy has been shown to be safe for patients with internal carotid artery stenosis, indicating the prevalence in relation to the stent.

scholarly journals Role of Extradural Clinoidectomy and Optic Unroofing in Resection of an Anterior Clinoidal Meningioma with Encasement of the Internal Carotid Artery and Its Branches

2021 ◽  
Author(s):  
Sima Sayyahmelli ◽  
Zhaoliang Sun ◽  
Emel Avci ◽  
Mustafa K. Başkaya
Keyword(s):  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Skull Base ◽  
Vision Loss ◽  
Internal Carotid ◽  
Extent Of Resection ◽  
World Health ◽  
Who Grade ◽  
The Right ◽  
Supraclinoid Internal Carotid Artery

AbstractAnterior clinoidal meningiomas (ACMs) remain a major neurosurgical challenge. The skull base techniques, including extradural clinoidectomy and optic unroofing performed at the early stage of surgery, provide advantages for improving the extent of resection, and thereby enhancing overall outcome, and particularly visual function. Additionally, when the anterior clinoidal meningiomas encase neurovascular structures, particularly the supraclinoid internal carotid artery and its branches, this further increases morbidity and decreases the extent of resection. Although it might be possible to remove the tumor from the artery wall despite complete encasement or narrowing, the decision of whether the tumor can be safely separated from the arterial wall ultimately must be made intraoperatively.The patient is a 75-year-old woman with right-sided progressive vision loss. In the neurological examination, she only had light perception in the right eye without any visual acuity or peripheral loss in the left eye. MRI showed a homogeneously enhancing right-sided anterior clinoidal mass with encasing and narrowing of the supraclinoid internal carotid artery (ICA). Computed tomography (CT) angiography showed a mild narrowing of the right supraclinoid ICA with associated a 360-degree encasement. The decision was made to proceed using a pterional approach with extradural anterior clinoidectomy and optic unroofing. The surgery and postoperative course were uneventful. MRI confirmed gross total resection (Figs. 1 and 2). The histopathology was a meningothelial meningioma, World Health Organization (WHO) grade I. The patient continues to do well without any recurrence and has shown improved vision at 15-month follow-up.This video demonstrates important steps of the microsurgical skull base techniques for resection of these challenging tumors.The link to the video can be found at https://youtu.be/vt3o1c2o8Z0

Internal carotid artery stenosis

1964 ◽  
Vol 51 (9) ◽  
pp. 703-709 ◽  
Author(s):  
P. H. Dickinson ◽  
John Hankinson ◽  
Merlin Marshall
Keyword(s):  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Carotid Artery Stenosis ◽  
Internal Carotid ◽  
Internal Carotid Artery Stenosis ◽  
Artery Stenosis
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