Aortic Stenosis

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                      General Information



Aortic stenosis is a congenital (present at birth) heart defect

that is most common in German Shepherds, Newfoundlands and

Boxers.  In this condition, narrowing of the aorta (the large

artery that distributes blood from the heart) forces the heart to

beat faster and harder to pump blood to the rest of the body.

This can lead to heart failure.  While some young puppies with

aortic stenosis appear completely healthy, others tire quickly,

are stunted, and have fainting spells.  Sudden death at 6-18

months of age is common.  Dogs with mild stenosis (narrowing) may

live for many years without developing heart failure, but once

signs of heart failure develop, the chances for a normal life

are poor.  Diagnosis of aortic stenosis frequently involves

radiographs (x-rays), electrocardiograms, angiography or

echocardiography.



                 Important Points in Treatment



1.  Many cases of aortic stenosis are correctable with open-heart

    surgery;  however, the procedure requires a heart-lung

    bypass, and is relatively risky and quite expensive.

    Therefore, the procedure is not often performed. 



2.  Medical treatment often prolongs the life of dogs with early

    signs of heart failure due to aortic stenosis. 



3.  All the medication must be given as directed.  Please call

    the doctor if you cannot perform any recommended treatments. 



4.  Diet:  Follow the instructions checked. 



    ____Feed the normal diet. 



    ____A special diet is required.  Feed as follows: 





5.  Exercise:  Permissible exercise depends upon the severity of

    the stenosis and the physical condition of the animal.

    Restrict your pet's activity as follows:





       Notify the Doctor if Any of the Following Occur:



    * Your pet develops a cough or difficult breathing.



    * Your pet seems fatigued or tires easily.



    * Your pet has diarrhea or vomits.



    * Your pet is reluctant to eat.