Identifier: philtrans05069549 (find matches)
Title: The Excitatory Process in the Dog's Heart. Part II. The Ventricles
Year: 1915 (1910s)
Authors: Lewis, T. Rothschild, M.
Subjects: Proceedings of the Royal Society of London Philosophical Transactions of the Royal Society
Publisher: Royal Society of London

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by the opening phases of an electrocardiogram of different but characteristictype (see Plate 11, fig. 26 c and d). Of the remaining contacts, four lie on thefree wall and the fifth over the trabeculated region of the right ventricle. It isthese five contacts which show conspicuous change. At all of them the excitationwave is markedly delayed and along each line it progresses from left to right.Whereas the contact over the edge of the trabeculated region was the first to * < Zeitsehr. f. Klin. Med./ vol 70, p. 1 (1910). 2 D 2 200 MESSES, T. LEWIS AND M. A. ROTHSCHILD ON THE show activity originally, after section, it became later than any contact over the leftventricle. Similar changes are to be observed in the diagram of the second experiment(fig. 13) ; four contacts on the left ventricle show practically no change other thanwhat may be accounted for by the alteration of standard, errors of measurement,and replacement of contacts; a conspicuous delay is seen at the two contacts on
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