A tabular handbook of auscultation and percussion : For students and physicians / By Herbert C. Clapp.

  • Clapp, Herbert C. (Herbert Codman), 1846-
Date:
1879
Catalogue details

Licence: Public Domain Mark

Credit: A tabular handbook of auscultation and percussion : For students and physicians / By Herbert C. Clapp. Source: Wellcome Collection.

Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.

    38/116 (page 24)
    TABLE NO. 3. — RESPIRATION IN DISEASE. VARIETIES. character of the sound. HOW PRODUCED. Jerking Respiration. (Interrupted, wavy, cogged-wheel.) Both sounds, especially the inspiratory, instead of being even and continuous from their commencement to their close, are broken into one, two, or more parts. 1. By some local obstacle to the ingress or egress of air. Usually the pressure of tu- bercular or other deposit, or the presence of thick mucus in the air passages, or spasm of a tube. 2. By nervousness or shrink- ing on account of pain. Prolonged Expiration. The rhythm changed so that the expiration is length- ened absolutely and rela- tively to the inspiration, which is generally short- ened. 1. When the air-cells are over-distended and have lost their natural elasticity from this distention or (2) on ac- count of deposits in their walls, the air has difficulty in making its escape. This dif- ficulty may be increased in the latter case by the promi- nences produced by the de- posit on the interior of the final bronchial ramifications, these prominences opposing obstacles to the rapid egress of air.