SPECIAL CLINICAL EXAMINATION. 



89 



Systolic bruits I ^w^w I are characteristic of: 



Insufficien c y 

 of an atrio- 

 ventricu 1 a r 

 valve. 



Stenosis of 

 a n arterial 

 opening. 



Diastolic bruits! — wl are characteristic of : 



Stenosis o f 

 an at r i o- 

 ventricu 1 a r 

 opening. 



Insufficien c y 

 of a semi- 

 lunar valve. 



Although the bruits originate in different parts of the 

 heart, the exact point of origin cannot be determined by 

 auscultation. In the horse and dog valvular lesions have their 

 seat most commonly in the left heart, rarely are they primary 

 in the right heart, In the ox valvular diseases of the right 

 heart are more frequent than of the left one. The atrio- 

 ventricular valves are more commonly diseased than the semi- 

 lunar. 



b. Contrary to the endocardial, organic bruits, the 

 inorganic or anemic bruits occur without that any discernible 

 anatomical alteration appears at the orifices or valves of the 

 heart. Inorganic bruits are systolic, soft, blowing and not 

 constant (accidental). They tend to disappear and reappear 

 again. Their origin is not well understood. They are nearly 

 always noted in anemic animals. 



It is very important to distinguish between 

 organic and inorganic heart bruits, but in prac- 



