Results 201 to 210 of about 174,337 (252)
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Neuropeptides and the conduction system of the heart
International Journal of Cardiology, 1992Autonomic influences on the heart have been the subject of intense research for many decades but the dramatic expansion in cardiac electrophysiological studies in man has recently renewed clinical interest in autonomic control of the conduction system in health and disease.
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Damage to the conduction system of the heart in the newborn
American Journal of Obstetrics and Gynecology, 1962Abstract Small hemorrhages in the conduction system of the heart were found in 10 out of 25 infants who died during the perinatal period. In half the number, the hemorrhages were associated with other petechiae in the myocardium. Petechiae might be an expression of ischemia during birth.
Cornelia Hoch-Ligeti, Rodrigo Diaz-Perez
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The Pathology of the heart conduction system in congenital heart block
Journal of Clinical Forensic Medicine, 2006The incidence of congenital complete heart block is estimated in 1 of 2500-20,000 births. Many cases are isolated (found in an otherwise normal heart) and the pathology of the heart conduction system is variable. We report a 51-year-old man with the diagnosis of complete heart block, with a permanent pacemaker.
María Sol Rodríguez-Calvo +4 more
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The Conduction System of the Heart
2014The conduction system of the heart, which provides the heart its automatic rhythmic beat, consists of cardiac muscle cells and conducting fibers that initiate impulses and conduct them rapidly through the heart, initiate the normal cardiac cycle, and coordinate contractions of the cardiac chambers.
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XVIII.—The Conducting System of the Marsupial Heart
Transactions of the Royal Society of Edinburgh, 1942Elsewhere two of the present authors (Davies and Francis, 1941) have expressed the opinion that a specialised cardiac conducting system, consisting of nodal and Purkinje fibres, is a newly evolved one in birds and mammals. The general morphology and topography of this system in the heart of the bird (Davies, 1930 a, 1930 b) is similar to that in the ...
D. M. Blair +2 more
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Modeling and controlling the heart conductive system
2003 IEEE International Workshop on Workload Characterization (IEEE Cat. No.03EX775), 2004A model of the cardiac tissue as a conductive excitable system with a pacemaker under external stimuli is proposed. At certain conditions this model is reduced to the standard circle map. It is analytically shown that 2-periodic perturbations of the constructed map lead to the stabilization of the prescribed orbits and thus, allow us to realize the ...
Alexander Loskutov +2 more
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Conduction system in congenital heart disease
The American Journal of Cardiology, 1968Abstract The conduction system in congenital heart disease may show abnormalities in position, disruption in continuity, or accessory or abnormal communications. Complete or partial A-V block, right bundle branch block and Wolff-Parkinson-White syndrome may be related to these abnormalities.
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A cytophysiological feature of the conducting system of the heart [PDF]
Bulletin of Experimental Biology and Medicine, 1964 Marked differences between the conducting system of an adult heart and embryonic tissues were demonstrated by staining the nuclei with methylene blue leucobase. The nuclei and the cytoplasm of the conducting system differed in their staining reactions from those of the myocardium, thus demonstrating a difference in the enzymes contained.
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Gangliosides of the bovine heart impulse conducting system
Biochimica et Biophysica Acta (BBA) - Lipids and Lipid Metabolism, 1986The ganglioside analysis of the heart impulse conducting system was carried out, comparing it with that of ordinary myocardium. The heart impulse conducting system contained about 3-times more gangliosides than ordinary myocardium and showed a distinctly different ganglioside composition.
Abe Toshiaki +2 more
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Effects of Halothane on the Conduction System of the Heart in Humans
Anesthesia & Analgesia, 1989The effects of 2.0 MAC halothane on atrioventricular conduction times in humans were studied. A real-time recording system for the detection of surface His-Purkinje potentials based on signal averaging techniques was used. Recordings were made in 23 patients before and after the administration of halothane. In 18 patients we were able to measure atrial
H . S. Holley +6 more
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