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One of the most interesting discussions during the recent meeting of the British Medical Association at Toronto was that on heart block in the Section on Medicine. The term is probably not familiar to most ordinary practitioners of medicine, and the idea which it conveys has really only been introduced into medical science in the last few years. The idea intended by the term is that heart impulses which begin in the auricle do not succeed in passing over into the ventricle because they are blocked in their progress. This "heart block" is due to the fact that a particular bundle of muscle fibers through which the heart impulses are conducted has its function interfered with by some pathologic or traumatic condition and thus prevents the passage of these impulses. The result, as expressed in the picturesque language of Professor Gibson, of Edinburgh, is a divorce between the auricles and
HEART BLOCK.. JAMA. 1906;XLVII(10):779-780. doi:10.1001/jama.1906.02520100051005