BACKGROUND AND PURPOSE Controversy exists on how to assess a patient's tolerance before permanent carotid artery occlusion. We sought to determine the positive predictive value of synchronous opacification of hemispheric cortical veins at angiography of the contralateral carotid or vertebral artery as a predictor of tolerance to permanent carotid artery occlusion without development of ischemic...

In their search to find ways to reduce ischemia and possibly prevent death in patients with refractory angina, Stoller and Seiler, in 2014, moved into an undiscovered country and advanced a novel therapeutic strategy involving stimulation of extracardiac collaterals through occlusion of the internal mammary artery. In this issue of Circulation: Cardiovascular Interventions, Stoller and Seiler t...

PURPOSE To report a case of acute retinal necrosis presenting as central retinal artery occlusion with cilioretinal sparing. METHODS Single interventional case report. The findings of the ophthalmic examination, MRI, blood parameters, biopsy results and clinical course are reported. RESULTS A forty two year old gentleman reporting sudden loss of sight, ophthalmic examination revealing uveit...

The HydroCoil Embolic System (HES) comprises a platinum microcoil coated with an expansile polymer and is approved by the United States Food and Drug Administration for cerebral aneurysm occlusion. We report a series of five cases, two in the internal carotid artery and three in the vertebral artery, in which the HES was used for parent artery occlusion procedures. In each of these cases, the H...

Dilatation of collateral blood vessels was studied following occlusion of the femoral artery in anesthetized dogs. This was achieved by measuring pressure and flow in the anterior tibial artery distal to the occlusion and pressure in the femoral artery proximal to the occlusion. Dilatation of the collateral vessels to the anterior tibial artery was estimated by the increase in the conductance o...

artery in the neck. Obviously the pressure is not always so low and will depend on the collateral circulation which may be much better to the eye than to the brain. On the contrary, one might expect to find a near-zero low diastolic retinal artery pressure in some patients with a stroke without carotid artery occlusion but with a retinal artery stenosis or thrombosis (near-zero low pressure is ...

artery in the neck. Obviously the pressure is not always so low and will depend on the collateral circulation which may be much better to the eye than to the brain. On the contrary, one might expect to find a near-zero low diastolic retinal artery pressure in some patients with a stroke without carotid artery occlusion but with a retinal artery stenosis or thrombosis (near-zero low pressure is ...

AD, anterior descending coronary artery; CTO, chronic total occlusion; CX, circumflex coronary artery; F, female; LMC, left main coronary artery; M, male; RC, right coronary artery. a Patient no. 4 had chronic renal failure requiring hemodialysis, as well as severe peripheral arterial disease. Patient no. 7 had advanced chronic obstructive pulmonary disease. b Patient no. 4 had total occlusion ...

The angiographic appearance of the proximal end of internal carotid artery occlusion is reported in 41 patients with acute stroke in the areas of the brain supplied by the carotid artery. All patients had angiography within 6 days of stroke onset, the majority within 24--48 hours. Three angiographic configurations of internal carotid occlusion were found, in descending order of frequency: a sha...