HEART DISEASES. 549 



pericardii results, a lingering death is the only termination 

 that can be expected. A post-mortem examination reveals 

 a copious effusion of serum into the pericardial sac, and in 

 many cases false membranes to such an extent that the 

 pericardium can scarcely be seen. 



Treatment. — Small and repeated doses of aconite appear 

 to have a highly beneficial effect — allaying pain and 

 irritability. Pain may, however, if excessive, be more 

 effectually controlled by the administration of opium in 

 some of its forms. Potasste bicarb., in doses of 5ii., may 

 be given every four hours until relief is afforded. The 

 patient should be kept perfectly quiet, and out of the way 

 of any sight or sound likely to cause excitement. Digitalis 

 is recommended by some practitioners to be given in com- 

 bination with potasstB nitras. Fomentations to the sides, 

 or even a strong vesicant, frequently are attended with 

 beneficial results. Oleaginous draughts may be given 

 as often as may be necessary, to keep the bowels in 

 good condition. In the course of time the case will 

 terminate fatally in spite of all that can be done — 

 treatment only serving to prolong the life of the animal. 

 The internal administration of potassoe iodidi may be 

 tried with a view of causing absorption of the fluid effused, 

 but generally its use is not attended with much benefit. In 

 a case where a horse has been suffering from influenza or 

 any other debilitating disease, and has reached the conval- 

 escent stage, it may sometimes be noticed that suddenly 

 his respirations change in character, the breathing becoming 

 quicker than usual, oedematous swellings of the limbs ap- 

 pear, and regurgitation of blood may be observed to be taking 

 place in the jugular veins. "With such symptoms the prac- 

 titioner may know that effusion has taken place into the 

 pericardial sac. In such a case proper hygienic treatment 

 must be given. The judicious use of stimulants will also 



