A manual of percussion and auscultation : of the physical diagnosis of diseases of the lungs and heart, and of thoracic aneurism / by Austin Flint.
- Austin Flint I
- Date:
- 1876
Licence: Public Domain Mark
Credit: A manual of percussion and auscultation : of the physical diagnosis of diseases of the lungs and heart, and of thoracic aneurism / by Austin Flint. Source: Wellcome Collection.
Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.
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![ing from the beginning to the end of the inspiratory act, and the expiratoiy sound beginning with the expiratory act but ending before this act is completed, its duration, relatively to the inspiratory sound, being variable, but averaging about a fifth. The inspiratory sound continuing to the end of inspira- tion, and the expiratory sound beginning with the act of expiration, it follows that there is no interval between the two sounds. It is to be remarked that an interval is not infrequently produced by the per- son examined holding the breath after inspiration is conjpleted. This variation in the rhythm of the acts, of course, produces a corresponding variation in sounds of breathing. The student should verify these characters, com- pare them with the characters of the normal laryn- geal respiration, and becomepracticall}^ familiar w^ith the differential points. He should then proceed to study the normal vesicular murmur in the different rei>;ions of the chest. The murmur will be found to present variations in the different regions on the same side, and in the corresponding regions on the two sides of the chest. The variations, within the range of health, in the latter are especially im])ortant. The following account of the murmur in the different regions embodies the results of a series of recorded examinations of healthy persons. Right and Left Infra-clavicular Region. — The murmur in this region, on either side, differs more or less from tbe murmur as heard in the anterior regions below, or in the infra-scapular region. The vesicular quality in the ins]_)iration is less marked. The pitch is higher. The expiratory sound is longer.](https://iiif.wellcomecollection.org/image/b21052311_0082.jp2/full/800%2C/0/default.jpg)
