701 PREVIOUS STUDIES FROM THIS LABORATORY HAVE BROUGHT FORTH EVIDENCE SUGGESTING THAT IMBALANCES BETWEEN CAROTID AND VERTEBRAL blood flow and temperature underlie the increase in preoptichypothalamic temperature during rapid eye movement (REM) sleep in several mammalian species.1 Particularly relevant to the mechanism of such a temperature increase are the effects on preoptic-hypothalamic tempe...

Flow-mediated dilatation has been described mainly in peripheral conduit arteries. The goal of this study was to examine mechanisms and functional implications of flow-mediated dilatation in large cerebral arteries in vivo. Vessel diameter and velocity of blood flow through the basilar artery were measured using a cranial window in 45 anesthetized rats. Mean blood flow velocity through the basi...

Fig. 1. Perfusion CT scan showing extensive perfusion defects in the bilateral carotid territories and whole brainstem (arrow). Extensive deficits of cerebral blood flow (CBF) and cerebral blood flow volume (CBV) represent a large ischemic core in the bilateral hemispheres and brainstem. Fig. 2. CT angiogram showing tapered occlusions of both internal carotid arteries and occlusion of the basil...

Experiments are presented to show the effects of (1) propranolol on tbe response of systolic blood pressure and diastolic blood pressure to bilateral carotid artery occlusion in choralose-anesthetized dogs; (2) the effects of propranolol on acute hypertensive states in chloralose-anesthetized dogs; and (3) the effects of propranolol on the response of trained awake dogs to bilateral carotid art...

In patients with high-grade atherosclerotic stenosis or occlusion of the extracranial cerebral arteries, subarachnoid hemorrhage (SAH) may occur, potentially due to rupture of fragile dilated pial collateral vessels. This association has been well described in Moyamoya disease. There are only few cases in the literature that reported SAH due to bilateral carotid artery stenosis but intraventric...

background: the presence of significant carotid stenosis in coronary artery bypass grafting (cabg) patients increases the risk of either transient ischemic attack or stroke. however, there is a dearth of data on the risk for patients with unilateral total occlusion of the carotid artery. we herein report our results of cardiac surgery in patients with unilateral total occlusion of the carotid a...

Venous stasis retinopathy and ischemic oculopathy are ocular manifestations of ischemia in the distribution of the carotid artery. While not as common as transient monocular blindness or retinal arterial emboli, they are readily recognizable and indicate the presence of severe, often bilateral, carotid occlusive disease. Patterns of occlusion vary but usually include complete occlusion of at le...

The ocular ischemic syndrome is characterised by ocular symptoms and signs secondary to severe carotid artery obstruction. In this paper, two cases of bilateral ocular involvement are presented. The first case was caused by severe bilateral carotid stenosis and the second by bilateral occlusion of the carotid artery.