DAVID A. RYTAND, M.D., F.A.C.P.
The midclavicular line, a landmark of some interest and importance in electrocardiography and physical diagnosis, has undergone changes in its definition and description. These are reviewed. The present definition, in which the midclavicular line is held to be the mammillary line, is regarded as unsatisfactory. It is suggested that we return to Da Costa's 1909 definition (1): ". . . midclavicular . . . line, let fall from the middle of the clavicle. . . . This line, although commonly termed 'mammillary,' rarely passes through the nipple."
RYTAND DA. The Midclavicular Line: Where Is It?. Ann Intern Med. ;69:329–330. doi: 10.7326/0003-4819-69-2-329
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Published: Ann Intern Med. 1968;69(2):329-330.
Cardiac Diagnosis and Imaging, Cardiology.
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