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West Indian med. j ; 35(3): 197-9, Sept. 1986.
Artigo em Inglês | MedCarib | ID: med-11576


Dysphagia lusoria is a rare cause of dysphagia. It is usually due to a combination of an aberrant right subclavian artery and either a close origination of the common carotid trunk. A middle-aged man presenting with dysphagia due to an aberrant right subclavian artery and closely originating carotid arteries less than 1 cm apart is presented. Barium swallow demonstrated the characteristic oblique external compression effect on the upper posterior oesophagus. Oesphagoscopy confirmed an extrinsic defect in the upper oesophagus which was pulsatile. Dysphagia lusoria is a clinical entity that is not well recognized and should be considered in patients with upper oesphageal dysphagia in whom the cause is not obvious (AU)

Idoso , Humanos , Masculino , Artérias Carótidas/anormalidades , Transtornos de Deglutição/etiologia , Artéria Subclávia/anormalidades , Estenose Esofágica/etiologia
Arch Surg ; 120(3): 386-8, Mar. 1985.
Artigo em Inglês | MedCarib | ID: med-15829


In order to define the respective roles of the vasa vasorum blood supply and intraluminal arterial blood flow in maintaining the endothelial integrity of in situ vein bypasses, we have carried out two separate but interrelated experiments in a canine model. In vivo studies on eight dogs demonstrated that even in the absence of intraluminal blood flow the vasa vasorum maintained endothelial integrity and also showed that the endothelium was very sensitive to the loss of the vasa vasorum blood supply. In a second group of experiments on 14 in situ vein by passes we studied the effect of division of the vasa vasorum immediately after arterialization of the bypass. This experiment showed that arterialization of the vein maintained endothelial integrity despite division of the vasa vasorum.(AU)

Cães , 21003 , Vasa Vasorum/fisiologia , Veias/transplante , Artérias Carótidas/cirurgia , Endotélio/anatomia & histologia , Endotélio/irrigação sanguínea , Endotélio/fisiologia , Veias Jugulares/anatomia & histologia , Veias Jugulares/fisiologia , Veias Jugulares/transplante , Veias/anatomia & histologia , Veias/fisiologia , Fluxo Sanguíneo Regional
Lab Invest ; 18(5): 604-12, May 1968.
Artigo em Inglês | MedCarib | ID: med-12425


The cerebral arteries (common carotid, internal carotid, vertebral, middle cerebral, and basilar arteries) were examined from 1547 autopsied persons in five countries (Norway, Guatemala, United States, Jamaica, and Chile). Subgroups comparisons were made using a basal group of cases from which were excluded all persons with coronary heart disease, peripheral arterial disease, other atherosclerotic complication, hypertension, and diabetes. The prevalence and mean extent of atherosclerotic lesions increase in each succeeding age group. Lesions appear to develop later in life in the cerebral arteries than in the aorta and the cerebral arteries than in the aorta and the coronary arteries. Men have more raised atherosclerotic lesions than women. The mean extent of fatty streaks in the cartoid arteries does not differ among age groups from 35 to 69 years of age, nor does it differ among location-race groups. The mean extent of raised atherosclerotic lesions in the carotid arteries increases in each succeeding age group after 35 years of age, and differs among location-race groups.The pattern of development of atherosclerosis in the carotid arteries follows that of the aorta. Fatty streaks appear in the intracranial and vertebral arteries much later in life than they do in the carotid arteries.The mean extent of both fatty streaks and raised lesions increases in each succeeding age group after 35 years of age, and the average involvement of both types of lesions differs among location-race groups. The pattern of development of atherosclerosis in the vertebral and intracranial arteries follows that of the coronary arteries. When location-race groups are ranked by extent of cerebral atherosclerosis, they rank in approximately the same order as when they are ranked by aortic and coronary atherosclerosis. (AU)

Humanos , Criança , Adolescente , Adulto , Pessoa de Meia-Idade , Idoso , Masculino , Feminino , Arteriosclerose Intracraniana/epidemiologia , Arteriosclerose/epidemiologia , Arteriosclerose/patologia , Artéria Basilar/patologia , Afro-Americanos , Artérias Carótidas/patologia , Artérias Cerebrais/patologia , Arteriosclerose Intracraniana/patologia , Chile , Grupos Étnicos , Geografia , Guatemala , Jamaica , Louisiana , Noruega , Fatores Sexuais , Artéria Vertebral/patologia