1 4(j DISEASES OF THE CIBCULA TOR Y A PPAEA TUS. 



R. — Tinct. strophanthus sem 15.0 



S. — Ten to twenty drops morning and evening. 



R. — Caffeine citrate ....... 0.05 



Fiat M. No. x. S. — One powder morning and evening. 



R.— Tinct. digitalis 4.0 



Aquae ......... 64.0 



S. — One teaspoonful twice daily. 



If we succeed in re-establishing a compensating action, tli 

 symptoms gradually disappear, and we need not use diuretic- 

 if, however, we do not get the desired result and there shoul 

 be any cedema, we must treat it symptomatically. (See Drops 

 of the Abdomen.) 



The symptoms above described are sometimes found in dog 

 that do not present any marked alterations in the valves or open 

 ings either during life or on post-mortem. These are due eithe 

 to simple idiopathic hypertrophy and dilatation or to alteration c 

 the heart-muscle. 



Idiopathic Hypertrophy and Dilatation of the Heart: On post 

 mortem we find, as a rule, a hypertrophy of the left ventricle 

 but occasionally it is in both ventricles. At the same time we d 

 not find any alteration of the lungs or kidneys which might pro 

 duce secondary hypertrophy of the heart-muscle. The causes ar 

 extreme and constant exertion, cold, abnormal excitability of th 

 heart (in closely bred animals), overfeeding, and too much ric 

 blood (as in pet animals). 



A condition called Callous Indurative Degeneration of the Hear 

 is often mistaken for valvular defects. In this condition the heat 

 is greatly enlarged and dilated and the walls are hypertrophied 

 The Jbody of the heart-muscle is filled with a number of whitisl 

 hard bodies, which on examination are found to be cicatricial con 

 nective tissue. The left ventricle is the favorite seat of thes 

 bodies. 



The cause of these bodies has not been fully determined, bu 

 they are due either to Myocarditis or to defective nutrition of th 

 heart-muscle as a consequence of contraction or closing of the coi 

 onary artery. 



The clinical symptoms presented are as follows: The heai 

 becomes weak, palpitation, increase in the number of pulsi 

 dropsical effusions. 



