Hemodynamic changes were examined with an ultrasonic Doppler flowmeter and with a sound-spectrograph in 5 patients with internal carotid giant aneurysms or with recurrent laryngeal cancer undergoing gradual carotid occlusion. The ultrasonic Doppler technique was useful for preoperative assessment of intracranial cross-filling and as a practical guide for the graded reduction of blood flow in th...

The changes of cerebral energy state under bilateral and unilateral common carotid artery occlusion-reflow models in Mongolian gerbils were studied using in vivo 31 P nuclear magnetic resonance spectrometry (3IP-MRS). All ten gerbils used in the bilateral common carotid artery occlusion-reflow model showed relatively uniform ischemic patterns, i.e., depletion of phosphocreatine (PCr) and adenos...

Background & Aims: Ischemic postconditioning, conducted by a series of brief occlusion and release of the bilateral common carotid arteries, has neuroprotective properties in permanent or transient models of middle cerebral artery (MCA) occlusion but its delayed neuroprotective effects in the embolic model of stroke, especially in female rat, have not yet been reported and were investigated ...

A patient is presented with a right central retinal artery occlusion and subjective bruit over right ear. Digital compression of the right temporal artery eliminated the bruit and release reproduced the bruit. Carotid arteriogram showed bilateral internal carotid occlusion with a prominent right temporal artery. This sign reflects compensatory hyper-perfusion of the external carotid artery due ...

A 34-year-old, single Japanese woman with active Takayasu's disease presented with stenosed bilateral common carotid arteries, subtotal occlusion of the left subclavian artery, and complete occlusion of the ipsilateral proximal vertebral artery, as demonstrated by angiography. A right subclavian-Jeft vertebral bypass using an autologous saphenous vein graft was successfully performed after 36 d...

A 34-year-old, single Japanese woman with active Takayasu's disease presented with stenosed bilateral common carotid arteries, subtotal occlusion of the left subclavian artery, and complete occlusion of the ipsilateral proximal vertebral artery, as demonstrated by angiography. A right subclavian-left vertebral bypass using an autologous saphenous vein graft was successfully performed after 36 d...

Objective(s):The present study investigated the effect of long-term mild cerebral hypoperfusion induced by permanent unilateral (right) common carotid artery occlusion (UCO) on the dorsal hippocampal neurons in rats. Materials and Methods:Sixty four male Sprague-Dawley rats aged 4 months were divided into two groups of sham and UCO. These two groups were further divided into 4 sets of histopath...

Severe internal carotid artery (ICA) stenosis is a common cause of cerebrovascular accident (CVA) in middle-aged patients. Contralateral carotid occlusion (CCO) in patients with severe ICA stenosis is associated with high risk of CVA. Carotid endarterectomy (CEA) is associated with more complications in patients with CCO than those without CCO. In this study, we present the case of a 61-year-ol...

The pathogenesis of embolic events ipsilateral to an occluded carotid artery is uncertain. To examine this question we combined occlusion of the left common carotid artery with embolism from the right common carotid artery in rats. Following ligation of the left carotid artery in 20 experimental rats, we irradiated the right carotid artery with a laser (632 nm, 200 mW/cm2, 12-15 minutes) follow...