On stethometry : being an account of a new and more exact method of measuring & examining the chest, with some of its results in physiology and practical medicine also an appendix on the chemical and microscopical examination of respired air / by Arthur Ransome.
- Arthur Ransome
- Date:
- 1876
Licence: Public Domain Mark
Credit: On stethometry : being an account of a new and more exact method of measuring & examining the chest, with some of its results in physiology and practical medicine also an appendix on the chemical and microscopical examination of respired air / by Arthur Ransome. Source: Wellcome Collection.
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![CHAPTER III. ON THE GENERAL MEASUREMENTS OF THE CHEST. Vital statistics of the thorax, at rest, in health, and disease—Movement- measurements by other observers—Use of tapes and of Dr. B. Sanderson's stetho-cardiogi-aph in determining the order of movement of the ribs in males and females—Analysis of the chest-movements—Dr. Sibson's researches—Conditions of the inquiry—The 2)-Plane Slet/wtiutcr—De- scription, and mode of application—Sources of error—Points of observation — Graphical representation of the stethometric measurements—Movements of the chest-wall in forced breathing—Tables of measurements—Regional movements, (a) sternum, (b) clavicles, [c] the ribs—Variations in healthy breathing, with sex, age, position of the body, muscular power—Varieties in disease—Tables—Increased movements—Diminished—Peculiarities in the several dimensions. ... ... ... ... ... Pa^e 22—72 CHAPTER IV. OF THE MECHANICAL CONDITIONS OF THE RESPIRATORY MOVEMENTS. Advantages arising from the use of the 3-plane stethometer in this inquir)', (^7) simultaneous measurements, (1^) diameter only taken, (<) avoidance of the twisting movement of the ribs, (d) corroboration by other observers— Usual view of the action of the ribs—Angular movement of the ribs in rising—Its extent—Method of measurement—The chord-lengths of the ribs Approximate measurement in living subjects—Tables—Tests of the ordinary view of rib-action—Comparison between the observed and calculated motion of the ends of the third and fifth ribs—On the conditions {a) of the upward movement, (d) of the outward movement, (c) of the forward move- ment—Striking diflFerences between the observed and calculated extent of this motion—Variations by the action of the will—Altered diameters of the ribs in forced breathing—Pliability of the ribs—Experiments—Pathological cases—Direct measurement by callipers invented for the purpose—Method of using—Cases—On straightening the ribs—On the expiratory in-bcndingof the ribs—Application of this discovery—The examination of physiological and pathological facts - A?'*'73—9S](https://iiif.wellcomecollection.org/image/b20412101_0014.jp2/full/800%2C/0/default.jpg)
