Heart studies, chiefly clinical : I. The pulse-sensations: a study in tactile sphygmology / by Wm. Ewart.

  • Ewart, William, 1848-1929.
Date:
1894
Catalogue details

Licence: Public Domain Mark

Credit: Heart studies, chiefly clinical : I. The pulse-sensations: a study in tactile sphygmology / by Wm. Ewart. Source: Wellcome Collection.

Provider: This material has been provided by The University of Leeds Library. The original may be consulted at The University of Leeds Library.

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    CHAPTER III. THE AETERIAL CHANNEL — ARTERIES VIEWED IN THEIR CONTINUITY- PRESSURE CHANGES AND PULSA- TILE SYSTOLIC CHANGES IN AR- TERIES. Arterial Fulness.—Rhythmic Variations in Arterial Diameter, and in Thickness of Arterial Walls. Fulness and emptiness of the pulse are figura- tive expressions. Arteries during life are always full, though not always full-sized. The size of the artery varies with the bulk of its contents ; and this adjustment is brought about by two forces—the elastic, and the more elaborate muscular, mechan- isms of its coats. A voluminous pulse is usually found in perfectly collapsible and elastic vessels. A non-collapsing pulse may be moderately large; more often it is of rather small size, neither expanding much with, the pulse-waves, nor materially contracting during their intervals. This condition will be again referred to (see p. 47). Should any ordinary pressure from the finger fail to flatten the tensely filled artery, the latter is then described as cylindrical and non-