Relation to other maladies of the air passages. Horse. Causes,
susceptibility, heat, cold, sudden changes, thick coat, rebreathed
air, on shipboard, in zoological gardens, in close stables, in navies,
organic matter in expired air, water vapor in expired air, effect on
the air and bacteria. Ingesta in bronchia. Medicinal liquids in
bronchia in horses and cattle. Exposed locations. Clipping. Smoke and
gaseous irritants. Symptoms, in mild cases, in severe: fever, cough in
dry stage, after secretion, auscultatory sounds, percussion,
discharge, watery, glairy, frothy, later milky, flocculent, purulent.
Convalescence. Capillary and pseudo-membranous form. Intensity of
symptoms, labored breathing, dyspnœa, violent cough, pinched
countenance, dark mucosæ, perspirations, palpitations, asphyxia.
Course, duration. Termination, difficult expectoration, blocking of
bronchia, pneumonia, bowel susceptibility, skin congestion, laminitis.
Chronic condition. Lesions, congestion and contents of bronchia, soft,
thick, friable mucosa, absence of vascular ramification, tenacious
mucus, false membranes. Collapse, atelectasis, splenisation,
emphysema, bronchiectasis. Treatment, in mild cases, in severe,
hygienic, steaming, sulphur dioxide, derivatives, guarded laxative,
neutral salts, calmatives, expectorants, alkalies, stimulant, oxygen,
peroxide of hydrogen, iodide of potassium. Diet. In advanced stages
tonics.
_Definition._ Inflammation of the mucous membrane which lines the
bronchia. It is the counterpart of _coryza_ and _laryngitis_, being but
the inflammation of another portion of the same mucous membrane which
lines the whole respiratory track. That portion of this mucous membrane
which lines the trachea is rarely or never the exclusive seat of
inflammation, so that in case of its being implicated we do not speak of
the case as one of _tracheitis_ but as _laryngitis_ or _bronchitis_,
according as the throat or bronchia form the seat of active inflammatory
action.
The bronchial mucous membrane is often inflamed in influenza, strangles,
contagious pleuro-pneumonia of cattle, distemper in dogs, and parasitic
diseases of the lungs, but the following remarks will be confined to the
simple inflammatory affection. It appears as an _acute_ and a _chronic_
affection.