نتایج جستجو برای: coronary arteries
تعداد نتایج: 236920 فیلتر نتایج به سال:
A rare clinical case of malformation the coronary arteries is considered – anomalous left artery from pulmonary (Bland-WhiteGarland syndrome) in a 61-year-old patient. Detailed visualization form angiograms and multispiral-CT, including those after surgery, presented.
A new catheter which measures instantaneous changes in coronary artery blood flow velocity is described. The linear relationship between flow velocity is described. The linear relationship between flow velocity measured with the catheter and volume flow through small arteries is documented with a correlation coefficient of 4=0.99. Coronary flow velocity has been measured from the proximal right...
Introduction Coronary artery fistulas (CAF) are congenital or acquired formations between the coronary arteries and cardiac chambers or other vascular structures such as the vena cava, pulmonary artery, or veins [1]. Most of these are found incidentally during angiography [2]. Fistulas account for half of all coronary anomalies and are present in 0.002% of the general population. Coronary to pu...
In helically-cut strips of dog cerebral, coronary and mesenteric arteries, contracted with prostaglandin (PG) F2 alpha or K+, the addition of verapamil caused a dose-related relaxation. Verapamil-induced relaxations were greater in cerebral than in the other arteries when contracted with PGF2 alpha, but did not significantly differ in the arteries contracted with K+. Similar results were obtain...
Kawasaki disease (KD) is an acute vasculitis syndrome of unknown etiology. It occurs in infants and young children, affecting mainly small and medium-sized arteries, particularly the coronary arteries. Generalized microvasculitis occurs in the first 10 days, and the inflammation persists in the walls of medium and small arteries, especially the coronary arteries, and changes to coronary artery ...
OBJECTIVES To investigate the elastic properties of medium-size extracardiac arteries and veins between patients with and without left main stem coronary artery disease. METHODS The compliance, distensibility, and incremental elastic modulus (iEmod) of the internal thoracic arteries (n=53), long saphenous veins (n=38), and radial arteries (n=35) from 74 patients undergoing coronary surgery we...
Myocardial blood flow was measured by the 133Xe clearance method in 6 patients with radiologically confirmed disease of the coronary arteries and in 4 patients with normal arteries. The myocardial bloodflow was measured 5 minutes after intravenous diazepam OI mg/kg body weight. There was an increase in myocardial bloodflow in all cases. Patients with normal coronary arteries showed an average i...
BACKGROUND The study objective was to evaluate the role of transesophageal echocardiography in identifying the origin of anomalous coronary arteries and confirming their course in relation to the great vessels. The diagnosis of coronary anomalies is made by angiography. The anomalous left main artery with a course between the pulmonary artery and the aorta has been associated with myocardial in...
OBJECTIVES To test our hypothesis that the development of vulnerable plaques is not limited to the culprit lesions, but is a pan-coronary process, we directly observed all three major coronary arteries by angioscopy and evaluated the prevalence of yellow plaques in patients with myocardial infarction (MI). BACKGROUND Although pathologic studies have suggested that the disruption of atheromato...
Isolated dog internal thoracic arteries (ITA) responded to norepinephrine and phenylephrine with concentration-related contractions, which were suppressed by prazosin, but not by yohimbine. Clonidine did not contract ITA. In coronary arterial strips, norepinephrine produced a relaxation. Isoproterenol relaxed coronary arterial strips contracted with serotonin but did not alter the tone of ITA. ...
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