A comparison of the auscultatory blood pressure phenomenon in man with the tracing of the Erlanger sphygmomanometer / by Arthur W. Weysse and Brenton R. Lutz.

  • Weysse, Arthur Wisswald, 1867-
Date:
1913
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Licence: In copyright

Credit: A comparison of the auscultatory blood pressure phenomenon in man with the tracing of the Erlanger sphygmomanometer / by Arthur W. Weysse and Brenton R. Lutz. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    Reprinted from the American Journal of Physiolo Vol. XXXII-December 1, 1913-No. VIII \ A COMPARISON OF THE AUSCULTATORY BLOO PRESSURE PHENOMENON IN MAN WITH THE TRACING OF THE ERLANGER SPHYGMOMANOMETER By ARTHUR W. WEYSSE and BRENTON R. LUTZ HE sphygmomanometer has come into such general use in practical medicine as well as in the laboratory within recent years that it becomes imperative to establish such criteria for the determination of the blood pressure by the various methods employed, that the records of different observers may be comparable. The auscultatory method seems to be particu- larly reliable, but there has been no conclusive demonstration of the relation of the auscultatory phenomenon in man to the record of an accurate graphic instrument. In this paper we present the results of a comparison of the auscultatory method with the tracings from the Erlanger sphygmomanometer. The Criteria eor Maximum and Minimum Blood Pressure The criteria used for the determination of maximum blood pressure with the Erlanger sphygmomanometer are: (i) a marked increase in amplitude of the pulsations traced on the cylinder; (2) a change in the direction of the trough line; (3) a change in form of the pulse wave. (Erlanger, 1904 and 1908.) The minimum blood pressure is determined by the maximum oscillations obtained with the Erlanger sphygmomanometer. Howell and Brush (1901) showed conclusively by animal experi- mentation that maximum oscillations occur when the artery is subjected to an external pressure equal to the minimum blood [From the Physiological Laboratory of Boston University] Introduction