Myocardial segment motion during regional ischemia - Regional contraction and relaxation.
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چکیده
منابع مشابه
Relationship between regional myocardial procainamide concentration and regional myocardial blood flow during ischemia in the dog.
We measured myocardial blood flow and myocardial procainamide concentration in 24 sections of left ventricle following occlusion of the left circumflex coronary artery in 11 dogs. "C-Labeled procainamide was infused at a constant rate (40 jig/kg P r m ' n ) following completion of the coronary artery occlusion. At the end of 4 hours, the infusion was terminated and the dogs were killed. Regiona...
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The purpose of our study was to investigate whether loss of myocardial contraction immediately after coronary occlusion was nonuniform, and if pretreatment with carvedilol, a vasodilating nonselective beta-adrenoceptor antagonist, could retard loss of contraction after coronary artery occlusion. Feline hearts were subjected to acute regional ischemia by total occlusion of the left anterior desc...
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BACKGROUND Quantification of regional myocardial function is a major unresolved issue in cardiology. We evaluated the accuracy of pulsed Doppler tissue imaging (DTI), a new echocardiographic technique, to quantify regional myocardial dysfunction induced by acute ischemia and reperfusion. METHODS AND RESULTS In nine open-chest anesthetized pigs, various degrees of regional wall motion abnormal...
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Cardiac prostaglandin release was studied in closed-chest dogs during acute coronary occlusion. Aortic and coronary sinus blood was obtained before, and at intervals after, balloon occlusion of the left anterior descending artery in seven dogs. Samples were assayed for prostaglandins F, E, and A by randioimmunoassay. All dogs demonstrated prostaglandin F release, Mean +/- SE postocclusion aorti...
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response and regional distribution during coronary hyperemia as measures of coronary flow reserve. Am J Cardiol 33: 87, 1974 33. Gregg DE: The natural history of coronary collateral development. Circ Res 35: 335, 1974 34. Scheuer J, Brachfeld N: Myocardial uptake and fractional distribution of palmitate-l-14C by the ischemic dog heart. Metabolism 15: 945, 1966 35. Crass III MF, Holsinger JW Jr,...
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ژورنال
عنوان ژورنال: Japanese Circulation Journal
سال: 1987
ISSN: 0047-1828,1347-4839
DOI: 10.1253/jcj.51.74