The ear : its anatomy, physiology, and diseases : a practical treatise for the use of medical students and practitioners / by Charles H. Burnett.

  • Burnett, Charles H. (Charles Henry), 1842-1902.
Date:
1877
Catalogue details

Licence: Public Domain Mark

Credit: The ear : its anatomy, physiology, and diseases : a practical treatise for the use of medical students and practitioners / by Charles H. Burnett. 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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    dull, and by the time secretion is fully established, the deafness may be groat. The subjective noises are usually very annoying, and in many cases very distressing. Concerning tinnitus aurium and all kinds of so-called subjective aural sounds, the reader is referred to page 356. Vertigo, Fever, and Belirium.—Vertigo may be a symptom in this as in many other aural diseases. It seems most marked after secretion is established, and before the membrana tympani is ruptured. It is, therefore, apparently due to pressure com- municated to the labyrinth. Fever and delirium, excited by the intense acute inflamma- tion, must be treated on general principles, with this exception, that cold applications to the head, near the afiected ear, should be avoided. While cold may allay inflammation elsewhere, no good results can come from its application to an acutely in- flamed middle ear. This is due to the specially bad efl:ects of cold in any form, upon the ear. OBJECTIVE SYMPTOMS. Memhrana Tympani.—If the drum-head is examined in the early stages of this disease, it will be found congested at its periphery, and markedly about the membrana flaccida and the malleus. Gradually this congestion spreads inward from the periphery and outward, i. e. backward and forward from the manubrium of the malleus, until the entire drum-head is de- cidedly pinkish, with especially deep shades in its ujjper half. When so much congestion has occurred, the usual contour of the membrane will be less marked, the handle of the hammer will be less distinct, and the lustre of the dermoid layer and the pyramid of light will disappear. Vesicles may form on the membrana tympani at this point of the disease, but they are not common. The normal features of the drum-head are thus made to vanish, but in the lighter cases they may not become more distorted than above described, while in the severer cases the congestion and swelling of the membrane become so great that, at the fundus of the canal, there is only an undefined and sodden red diaphragm in the place of the normal drum-head.