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[Morphological studies on the human heart conduction system].

An attempt has been made to demonstrate morphological equivalents of electrocardiographically determined conduction disturbances in the human heart. In 50% of our cases an authentic morphological change was found. In 25% the correlation remained doubtful, and in another 25% there was no connection. The highest coincidence was found in chronic left bundle branch block and in dissecting aneurysms causing hemopericardium. The correlation between function and morphology is very loose in patients who have undergone cardiac surgery. Etiology is discussed only marginally; ischemia is the predominant feature.