coronary occlusion/albumină

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Relationship of epicardial ST segment elevation to the plasma free fatty acid/albumin ratio during coronary occlusion in dogs.

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1. Intravenous infusions of lipid-free albumin were used to lower the arterial non-esterified fatty acids (NEFA)/albumin ratio during coronary occlusion in dogs. 2. Reduction of the NEFA/albumin ratio was accompanied by proportionate reductions in myocardical uptake of NEFA and the degree of ST

[Limitation of the area of necrosis induced by quinacrine after coronary occlusion in the dog].

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Phospholipase activation has been suggested to represent one of the most relevant biochemical steps toward irreversible myocardial injury during ischemia. Accordingly, the time-course of myocardial phospholipid degradation was studied in 167 rats surviving coronary artery occlusion randomly divided

[Intensive albumin therapy and pressure modifications during acute coronary ischemia in the dog].

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The influence, on left ventricular pressure, of an intensive human albumin administration, has been studied in eight open chest dogs, during a second myocardial ischemia produced by coronary occlusion. After elevation of plasmatic proteins, the systolic and telediastolic left ventricular pressure,

Distribution of fibrinogen and albumin in normal, ischaemic, and necrotic myocardium during the evolution of myocardial infarction: an immunohistochemical study.

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The role of mediators of inflammation in the pathogenesis and evolution of myocardial infarction has attracted increased interest as interventions which inhibit the inflammatory response after coronary artery occlusion have been shown to decrease infarct size. The distribution of fibrinogen and

Myocardial perfusion abnormalities during low-dose dobutamine after coronary reperfusion can be demonstrated with intravenous perfluorocarbon-exposed sonicated dextrose albumin ultrasound contrast.

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We measured background-subtracted peak myocardial videointensity (PMVI) in the left anterior descending and left circumflex perfusion zones in open-chest dogs after intravenous injection of perfluorocarbon-exposed sonicated dextrose albumin ultrasound contrast (PESDA) after reperfusion of a coronary

Reduced albumin-cobalt binding with transient myocardial ischemia after elective percutaneous transluminal coronary angioplasty: a preliminary comparison to creatine kinase-MB, myoglobin, and troponin I.

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BACKGROUND Previous reports suggest that ischemic conditions rapidly reduce the capacity of human albumin to bind exogenous cobalt. A new assay based on human albumin-cobalt binding (ACB) may help detect early myocardial ischemia. We investigated altered ACB during the first 24 hours after transient

Relations between collateral flow and tissue salvage in the risk area after acute coronary occlusion in dogs: a topographical analysis.

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Localization of salvaged tissue after occlusion of the left anterior descending coronary artery due to collateral blood flow within the risk area was examined in a canine model using differential autoradiography. 125I tracer microspheres were injected into the left anterior descending artery

[Limitation of myocardial infarct size by polyethylene glycol-conjugated superoxide dismutase in a canine model of 90 min coronary occlusion followed by 4 days of reperfusion].

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The role of oxygen free radicals in the genesis of myocardial reperfusion injury is supported by the studies with superoxide dismutase (SOD) which provides protection against the extention of myocardial injury. However, the efficacy of SOD may be of limited value due to its short plasma half-life of

The effects of phospholipase A2 inhibition on experimental infarct size, left ventricular hemodynamics and regional myocardial blood flow.

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It has been reported that activation of phospholipase A2 and the subsequent degradation of membrane phospholipids are responsible for irreversible myocardial injury. Thus, we examined whether a phospholipase A2 inhibitor 1-(benzylmethyl-amino)-3-[(alpha, alpha, alpha-trifluoro-m-tolyl)oxy]-2-

Insulin-like growth factor I and II preserve myocardial structure in postinfarct swine.

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BACKGROUND Insulin-like growth factors (IGF) I and II improve myocardial function after coronary occlusion in different animal models. OBJECTIVE To investigate the mechanism of improved myocardial function after administration of IGF-I or IGF-II in acute myocardial infarction. METHODS Female pigs

Studies of amiodarone during experimental myocardial infarction: beneficial effects on hemodynamics and infarct size.

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The effect of amiodarone was investigated in a canine model of myocardial infarction. The left anterior descending coronary artery was occluded in 24 anesthetized dogs. After 15 minutes of coronary artery occlusion, the ischemic myocardium at risk of necrosis was determined by labeling the heart

Effect of a critical coronary stenosis on myocardial neutrophil accumulation during ischemia and early reperfusion in dogs.

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In many experimental models of ischemia and reperfusion, reperfusion is performed abruptly, allowing full reactive hyperemia to occur. In the clinical setting, however, reperfusion after thrombolysis is often limited by residual stenosis. Some experimental models attempt to mimic this situation with

Relation of perfusion defects observed with myocardial contrast echocardiography to the severity of coronary stenosis: correlation with thallium-201 single-photon emission tomography.

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It has been previously shown that myocardial contrast echocardiography is a valuable technique for delineating regions of myocardial underperfusion secondary to coronary occlusion and to critical coronary stenoses in the presence of hyperemic stimulation. The aim of this study was to determine

A model for predicting transfusion after coronary artery bypass grafting.

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BACKGROUND Blood conservation has become an important issue in cardiac surgery. This study was undertaken to determine if the need of blood transfusion could be predicted from preoperative patient variables. METHODS From January 1, 1992, to December 31, 1993, 2,033 patients having isolated coronary

Changes in the myocardial area at risk, infarct size, and collateral flow following nicardipine infusion in dogs.

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The area at risk of infarction after an acute occlusion of the left anterior descending coronary artery was defined in anesthetized dogs using the distribution of 99mTc-labelled albumin microaggregates and Monastral blue dye. In thirteen dogs, it was determined that these two particulate labels

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