CONDUCTION AND REFLECTION IN PURKINJE FIBERS/Jalife and Moe
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چکیده
digitalis. L Direct effects on peripheral vascular resistance. J Clin Invest 39: 930-936 Schoener EP, Dutta S, Kohn K, Marks BH (1976) Ouabain distribution in central nervous system after intrawrebroventricular or intravenous administration. Pharmacologist 18 (2): 168 Schwartz PJ, Stone HL (1977) Tonic influence of the sympathetic nervous system on myocardial reactive hyperemia and on coronary blood flow distribution in dogs. Circ Res 41: 5157 Somberg JC, Smith TW (1979) Localization of the neurally mediated arrhythmogenic properties of digitalis. Science 204: 321-323 Somberg JC, Rifiler T, Smith TW (1978) Neural factors in digitalis toxicity: Protective effect of C-l spinal cord transection Am J Physiol 235: H531-H536 Somberg JC, Mudge GH Jr, Risler T, Smith TW (1980) Neurally mediated augmentation of the arrhythmogenic properties of highly polar cardiac glycosides. Am J Physiol 238: H202-H208 Stark JJ, Sanders CA, Powell WJ Jr (1972) Neurally mediated and direct effects of acetylstrophanthidine on canine skeletal muscle vascular resistance. Circ Res 30: 274-282 Taber E (1961) The cytoarchitecture of the brainstem of the cat. J Comp Neurol 116: 27-52 Vatner SF, Higgins CB, Franklin D, Braunwald E (1971) Effects of a digitalis glycoside on coronary and systemic dynamics in conscious dogs. Circ Res 18: 470-479 Williams MH Jr, Zohman LR, Rattier AL < 1958) Hemodynamic effects of cardiac glycosides on normal human subjects during rest and exercise. J Appl Physiol 13: 417^421
منابع مشابه
Excitation, conduction, and reflection of impulses in isolated bovine and serum cardiac purkinje fibers.
When an impulse arrives at an area of impaired conductivity, a slowly rising electrotonic potential may bring the distal tissue to threshold after a delay imposed by the passive electrical properties of the system and by the time-dependent changes of these properties during diastole. This phenomenon can be demonstrated in Purkinje strands in which an area of depressed conductivity has been indu...
متن کاملThe effects of milrinone on conduction, reflection, and automaticity in canine Purkinje fibers.
Milrinone is a newly developed analogue of amrinone possessing potent positive inotropic action. Electrophysiologic actions of the drug have not been reported. In this study microelectrode techniques were used to assess the electrophysiologic effects of milrinone in canine false tendons homogeneously superfused with either normal or high-K Tyrode's solution and in Purkinje fibers mounted in a t...
متن کاملExcitation, Conduction, and Reflection of Impulses in Isolated Bovine and Canine Cardiac Purkinje Fibers
digitalis. L Direct effects on peripheral vascular resistance. J Clin Invest 39: 930-936 Schoener EP, Dutta S, Kohn K, Marks BH (1976) Ouabain distribution in central nervous system after intrawrebroventricular or intravenous administration. Pharmacologist 18 (2): 168 Schwartz PJ, Stone HL (1977) Tonic influence of the sympathetic nervous system on myocardial reactive hyperemia and on coronary ...
متن کاملReflected reentry in nonhomogeneous ventricular muscle as a mechanism of cardiac arrhythmias.
Arrhythmogenesis in ventricular muscle exhibiting nonhomogeneous excitability was studied in isolated tissues from feline and canine hearts. Longitudinal bundles were mounted in a three-chambered bath and simultaneous transmembrane recordings were obtained from fibers in each chamber. Nonhomogeneous excitability was established by depressing only the central segment (1 to 2 mm wide) with high-K...
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Muscle fiber conduction velocity (MFCV) is studied in 51 healthy volunteers using an invasive (IMFCV) and a surface (S-MFCV) EMG technique in the biceps brachii, in order to acquire normal values and to study reproducibility and effects of gender and age. In the invasive technique, muscle fibers are directly stimulated with needle electrodes, and the latencies of the evoked potentials are measu...
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