For the convenience of those not familiar with the electrocardiogram, the normal electrocardiogram of an adult with simultaneous venous pulse is shown in Figure 1. This electrocardiogram was taken in Lead II (right arm and left leg), and the sensitivity of the galvanometer was so adjusted that an ordinate of 1 cm. represents an electrical potential of 1 millivolt. The Q wave, as often happens, is not well developed in this electrocardiogram. In taking Lead I the electrodes are attached to the right arm and left arm, and in taking Lead III the left arm and the left leg are the extremities used.
Lewis, Meakins, and White:
Philosoph. Trans. Roy. Soc. Lond. , 1914;, Series B, ccv, 375.
Link to Article[[XSLOpenURL/10.1098/rstb.1914.0019]]
Lewis, T.: Lectures on the Heart, 1915, New York.
Lewis, T.: Proceedings Physiological Society, March 13, 1915 . Reported in Jour. Physiol. , 1915;, xlix, No.
(4)
, p. 20.
Lewis, T.: Proceedings Physiological Society, May 15, 1915 . Reported in Jour. Physiol. , 1915;, xlix, No.
(5)
, p. 26.
Hering, H. E.: Arch. f. d. ges. Physiol. , 1910;, cxxxi, 572.
Hecht, A. F.: Ergebn. der inn. Med. u. Kinderh. , 1913;, xi, 324.
Funaro: Riv. di clinica paediat. , 1910;, viii, No.
(6)
.
Heubner: Monatsschr. f. Kinderh. , vii, 1.
Funaro and Nicolai: Quoted by Hecht, Note 6.
Lewis, T.: Clinical Electrocardiography. London, 1913.
Kent, A. F. S.: Quoted by Hecht, Note 6.
Lewis, T.: Mechanism of the Heart Beat. London, 1910.
Eyster and Meek: Heart , 1914;, v, 227.
Meek and Eyster: Am. Jour. Physiol. , 1914;, xxxiv, 368.
Lewis, T.: Heart , 1914;, v, 281.
Wilson, F. N.:
Arch. Int. Med. , 1915;, xvi, 86.
Link to Article[[XSLOpenURL/10.1001/archinte.1915.00080010091007]]
Gallavardin, Dufourt, and Petzetakis: Arch. d. mal. du coeur , 1914;, vi, 1.
Gunson, E. B.: Brit. Jour. Child. Dis. , 1915;, xii, 97.
Eyster and Meek: Am. Jour. Physiol. , 1915;, xxxvii, 177.
Rohmer, P.: Jahrb. f. Kinderh. , 1912;, lxxvi, 391.
Hume, W. H.: Heart , 1913-14;, v, 25.
Belski: Ztschr. f. klin. Med. , 1909;, lxvii, 515.
Cowan, Fleming, and Kennedy:
Lancet , 1912;, i, 277.
Link to Article[[XSLOpenURL/10.1016/S0140-6736(01)66504-8]]
Wilson, F. N.: As yet unpublished.
Price and Mackenzie: Heart , 1911-12;, iii, 203.
Whipham, T. R.: Proc. Royal Soc. Med. ,
(Nov. 27)
, 1914;.
Reviewed in Brit. Jour. Child. Dis. , 1915;, xii, 11.
Zander, E.: Nordisches med. Arch. , 1915;, ii, No.
(6)
, Part 2.
Reviewed in Zentralbl. f. Herz u. Gefässkrank. ,
(July 1)
, 1915;, p. 194.
Lewis, T.: Clinical Disorders of the Heart Beat. London, 1913.
Gunson, E. B.: Brit. Jour. Child. Dis. , 1914;, xi, 385.
Lewis and Allen:
Am. Jour. Med. Sc. , 1913;, cxlv, 667.
Link to Article[[XSLOpenURL/10.1097/00000441-191305000-00003]]
Visco: Quoted by Hecht, Note 6.
Hutchinson and Parkinson: Brit. Jour. Child. Dis. , 1914;, xi, 241.
Kidd, P.: Proc. Royal Soc. Med. ,
(Feb. 24)
, 1914;.
Reviewed in Brit. Jour. Child. Dis. , 1914;, xi, 264.
Sutherland, G. A.: Brit. Jour. Child. Dis. , 1914;, xi, 337.
Sutherland and Coombs: Heart , 1913-14;, v, 15.
Ehrenreich, S. G.: New York Med. Jour. , 1914;, xcix, 269.
Nadel, V.: Mitteil. d. ges. f. inn. Med. u. Kinderh., Wien. , 1914;, xii, 210.
Reviewed in Ztschr. f. Kinderh. , 1914;, viii, 88.