[Studies on the local motility and blood circulation of the heart muscle during and after long-term coronary strangulation].
In ten young pigs a severe prolonged and critical stenosis of a major coronary artery was produced under control of an electromagnetic flowmeter. With stepwise constriction flow could be reduced to 55% of control with only minor hemodynamic changes. Local myocardial segment shortening was depressed to approximately 30% of control values. Hypokinesis was partially reversible within the first 135 min after reperfusion and had disappeared 24 h later. Computerized perfusion scintigraphy with radioactive microspheres gives a reliable approximation of the degree of myocardial blood flow reduction.
D000818:Animals; D001158:Arteries / Q000503:physiopathology; D003250:Constriction; D003326:Coronary Circulation; D003327:Coronary Disease / Q000503:physiopathology; D003331:Coronary Vessels / Q000503:physiopathology*; D055590:Electromagnetic Phenomena; D010477:Perfusion; D013552:Swine; D013997:Time Factors
Untersuchungen über die lokale Motilität und die Durchblutung des Herzmuskels während und nach längerfristiger Coronardrosselung.