Diseases of the Respiratoky Organs 245 



The clirouic cough which sometimes persistently remains after 

 the acute symptoms have subsided may be treated by cough mix- 

 tures, or, if these fail, by iodide of potassium in one drachm doses, 

 ihree times daily in the drinking water, one hour before feeding. 

 A blistering ointment composed of biniodide of mercury, one 

 drachm, and vaseline one ounce, may also be rubbed into the 

 swollen glands and throat. This must be used with caution, 

 however, as it will blister quite severely. 



ROARIXG 



Roaring is caused by some obstruction to the free passage of 

 air. It occurs usually as a complication of one of the respiratory 

 disorders. If due to sore throat, the noisy breathing will disap- 

 pear promptly after the cause has been removed. The noise 

 usually accompanies the inspiration, when the air is drawn into 

 the lungs, and only in advanced cases is it heard when the air is 

 expelled. 



The only treatment which appears to hold out any hope of cure 

 in a chronic roarer is an operation for tbe removal of the lining 

 membrane of two little sacs called the ventricles, situated above 

 and behind the vocal cords. This is an operation of great deli- 

 cacy, and should be attempted only by an expert. 



BROXCIIITIS INFLAMMATIOX OF THE BRONCHI 



This occurs in two forms — acute and chronic. The latter 

 may follow the acute fonn, or chronic bronchitis may develop into 

 the acute fonn. 



The symptoms are: fever; short, dry, smothered and painful 

 cough in the early stages, which later has a tendency to become 

 moist, due to exudation ; wheezing or whistling sounds, detecta- 

 ble when the ear is placed over the trachea and sides of the chest. 

 When exudation has taken place, there are heard what are known 

 as moist rales (giirgling sounds which can be heard very dis- 

 tinctly over the trachea). There is always dullness, increased 

 respiration and pulse, with partial or complete loss of appetite. 

 It is sometimes difficult to differentiate between bronchitis and 

 pneumonia, as a severe attack of the former is frequently com- 

 plicated by involvement of the lung tissue. 



