The Effects of Potassium on Anisotropic Conduction
A cryo-technique was used to create a thin layer of perfused anisotropic epicardium in Langendorff perfused rabbit hearts. The heart was stimulated with a frequency of 0.5 Hz and the extracellular concentration of K+ was gradually increased. The resulting effects on anisotropic conduction were studied by using a high resolution mapping system. In this setting, no preferential effect of K+ on the ratio of anisotropy or on the occurrence of local conduction block could be detected.
KeywordsConduction Velocity Fiber Orientation Extracellular Concentration Conduction Block Anisotropic Conduction
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