MYOCARDIUM INFARCTING?
نویسندگان
چکیده
منابع مشابه
HYPOVENTILATION PRIOR TO ISCHEMIA PRECONDITIONS RAT MYOCARDIUM
Repetitive episodes of brief regional ischemia have been shown to reduce the severity of life-threatening ventricular anhythrnias and infarct size that occur during prolonged occlusion of the coronary artery. This phenomenon is known as ischemic preconditioning. During studies in anesthetized, open chest Wistar rats, we accidentally observed that poorly ventilated animals had a reduced seve...
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Decreased myocardial contraction occurs as a consequence of a reduction in blood flow. The concept of hibernation implies a downregulation of contractile function as an adaptation to a reduction in myocardial blood flow that serves to maintain myocardial integrity and viability during persistent ischemia. Unequivocal evidence for this concept exists in scenarios of myocardial ischemia that last...
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Background I'Tc-Q12 is a new Tc(III) perfusion imaging agent that permits prompt myocardial visualization in humans. We postulated that 9'Tc-Q12 myocardial activity is related to actual myocardial blood flow during conditions of myocardial ischemia and pharmacological coronary artery vasodilation and that 99'Tc-Q12 shows little or no myocardial redistribution as long as 4 hours after intravenou...
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BACKGROUND Considerable variability in mortality risk exists among patients with ST-elevation myocardial infarction (STEMI). Complex multivariable models identify independent predictors and quantify their relative contribution to mortality risk but are too cumbersome to be readily applied in clinical practice. METHODS AND RESULTS We developed and evaluated a convenient bedside clinical risk s...
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Objective: We have previously demonstrated that myocardium is capable of down-regulating its 0, requirements and thus avoiding ischaemia when 0, supply is limited. The present study tested the hypothesis that endogenous adenosine produced this protective response when 0, supply was decreased by moderate coronary hypoperfusion or moderate coronary hypoxaemia. Methods: In anaesthetised dogs, hear...
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ژورنال
عنوان ژورنال: Australian and New Zealand Journal of Medicine
سال: 1982
ISSN: 0004-8291
DOI: 10.1111/j.1445-5994.1982.tb02641.x