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A COMPARISON OF ELECTRICAL AXIS WITH ROENTGEN RAY AND CLINICAL OBSERVATIONS IN THREE HUNDRED AND THIRTY-FOUR CASES

SAMUEL H. PROGER, M.D.; DAVID DAVIS, M.D.

Arch Intern Med. 1930;45(6):974-982.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

For purposes of understanding the significance of electrical axis or axis deviation, the heart may be regarded as a strip of muscle. If the two electrodes of a galvanometer make contact at A and B of a muscle strip (fig. 1), and the current runs parallel to and in the plane of the electrodes, a deflection occurs. If the electrodes are at X and Y, the electrical fields at these points approach a balance, little or no difference of potential is present, and practically no deflection occurs. For purposes of simplification, contacts A-B may be likened to lead I, and points X-Y to lead III. If three leads are so arranged as to form an equilateral triangle, an idea of the position of the muscle strip may be obtained by comparing the height of the deflections in the three leads. In figure 2 A, it is noted that lead II . . . [Full Text PDF of this Article]

Author Affiliations
ATLANTA, GA.; BOSTON

From the Medical Clinic of the Boston Dispensary, service of Dr. Joseph H. Pratt.

Footnotes
Submitted for publication, Nov. 26, 1929.

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