نتایج جستجو برای: air emboli
تعداد نتایج: 209049 فیلتر نتایج به سال:
Thromboembolic events are one of the world's leading causes of death among patients. Embolus or clot formations have several etiologies including paraneoplastic, post-surgery, cauterization, transplantation, or extracorporeal circuits. Despite its medical significance, little progress has been made in early embolus detection, screening and control. The aim of our study is to test the utility of...
OBJECTIVE The introduction and development of the embolic protecting device (EPD) has resulted in a decreased rate of stroke after carotid artery stenting (CAS). The authors performed a retrospective study to investigate the risk factors for developing large emboli after CAS which can lead to ischemic events. METHODS A total of 35 consecutive patients who underwent CAS between January 2009 an...
Mural thrombus in the internal carotid artery is a source of emboli to the retinal and cerebral arteries, causing transient or permanent blindness and hemiplegia (Gunning et al., 1946b); thrombi in subclavian arteries damaged by cervical ribs form emboli which lodge in the digital arteries, inducing ischaemia of the fingers and thickened intima (Gunning et al., 1964a). Emboli from mural thrombi...
In order to study the effects of septic embolism on the brain, silicone rubber emboli of various types were injected into the carotid arteries of 35 dogs. Pathologic and angiographic studies were performed to assess the resultant arterial and parenchymal lesions. Pure silicone rubber emboli (14 dogs) produced occasional intra-arterial thrombosis but no arteritis. Sterile and bacterially contami...
BACKGROUND Chronic haemodialysis (HD) may relieve some medical problems of terminal uraemia, but the life expectancy of patients is still significantly shortened, and there is a greatly increased morbidity. This includes pulmonary morbidity and chronic central nervous system (CNS) abnormalities. Previous studies have shown that a considerable amount of air microbubbles emanate within the blood ...
We studied the effects of uneven pulmonary artery obstruction by microemboli on steady state transvascular fluid and protein exchange in normal and leukopenic sheep. We measured pulmonary artery and left atrial pressures, cardiac output, lung lymph flow, and lymph plasma protein concentrations. Sheep were made profoundly leukopenic by administration of intra-arterial mechlorethamine hydrochlori...
Abstract: An embolus is a blood clot, a fat globule or gas bubbles that may be freely circulating in bloodstream can stop the blood flow and lead to ischemia. In real time assessment of blood flow by Trans Cranial Doppler (TCD) method, travelling solid or gaseous micro emboli in the bloodstream by passing across the assessment area, causes a short time signal with high intensity. While TCD reco...
BACKGROUND AND PURPOSE Calcified cerebral emboli are a rarely reported but devastating cause of stroke and may be the first manifestation of vascular or cardiac disease. Our aim was to evaluate the diagnosis, prevalence, imaging appearance, presumed embolic source, treatment, and outcome of patients with calcified cerebral emboli. MATERIALS AND METHODS Our radiology information system was sea...
Cholesterol emboli syndrome is a relatively rare, but potentially devastating, manifestation of atherosclerotic disease. Cholesterol emboli syndrome is characterized by waves of arterio-arterial embolization of cholesterol crystals and atheroma debris from atherosclerotic plaques in the aorta or its large branches to small or medium caliber arteries (100-200 μm in diameter) that frequently occu...
This study correlated levels of activated fibrinolysis with the presence, extent, and rate of resolution of angiographically documented pulmonary emboli. Pulmonary emboli demonstrable by angiography were associated with detectable fibrin split products in the serum of 24 of 25 patients. In the absence of increased fibrin split products, pulmonary emboli large enough to be demonstrated by angiog...
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