GEORGE BACHMANN, M.D., F.A.C.P.
Notching, bifurcation and splitting of the P-wave have been observed in a variety of cardiac conditions. The feature which is common to all and which is responsible for the abnormality can best be understood by considering a few facts relative to the time of onset of the contraction of the two auricles and the modifications that follow experimental interference with the spread of the wave of excitation from one auricle to the other.
An old observation of Chauveau1 made on the horse in 1894, that the right auricle contracts before the left, was confirmed experimentally by Fredericq2, 3 using the
BACHMANN G. THE SIGNIFICANCE OF SPLITTING OF THE P-WAVE IN THE ELECTROCARDIOGRAM1. Ann Intern Med. ;14:1702–1709. doi: 10.7326/0003-4819-14-9-1702
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Published: Ann Intern Med. 1941;14(9):1702-1709.
Cardiac Diagnosis and Imaging, Cardiology.
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