many different types of Cardiac diseases believed to be caused by genetic factors. Below you will find information on a few that have
been reported in the Cane Corso. Little is
known as to the percentages of Corsos with cardiac problems due to the lack of testing on
the breeders/owners part.
OFA has a Cardiac Database that was developed to
help gather data regarding congenital heart diseases in dogs and to identify unaffected
and affected dogs. Affected dogs should NEVER
be used for breeding. The test must be
done annually (every 12 months). The fee for
the OFA evaluation is $15 per dog. There is
no charge for resubmitting or for affected dogs of any age
is a condition that affects the heart muscle by causing inflammation and scarring which
results in enlarging of the heart. The
chambers within the heart dilate and become less efficient in supplying the body and
organs with blood, resulting in the heart muscle weakening.
In the end, the dog will develop congestive heart failure and die.
condition is believed to be genetic but how it is inherited is not yet documented. The clinical signs of a dog suffering from
cardiomyopathy often appear over a few days. The
disease usually starts between two and five years of age but research has shown that male
dogs usually don't show symptoms of the disease until sometime between five and eight
years of age. Female dogs usually don't exhibit symptoms until they are between nine and
twelve years of age. By the time the clinical signs appear the dog may already be in the
stage of severe heart failure.
stenosis is a common congenital (present at birth) defect, found most often in large dog
breeds. This condition is an abnormal narrowing of the juncture between the left ventricle
of the heart and the aorta. The narrowing is usually the result of a scar like tissue,
which has formed a ring just below the aortic valve.
stenosis can be extremely difficult to diagnose. Due to the wide range of possible
stenosis (narrowing) ranging from minor to severe, the impact upon the dogs overall health
and symptoms will also present a wide range of possibilities. Affected dogs may have few
or no clinical indications of this condition, or have a heart murmur; while some cases are
victims of "sudden death."
genetic factor(s) of SAS are not known as yet. It is believed to be a polygenetic
condition, and therefore very difficult to eliminate from the gene pool. Only through the
testing of all breeding stock and strict culling of positive animals and producers of
positive animals are there hopes to eventually eliminate this condition.
tricuspid valve is located between the right atrium and right ventricle of the heart.
Consisting of three irregularly shaped flaps, the purpose is to control the backflow of
blood from the right ventricle into the right atrium during contraction of the right
ventricle. When the right ventricle contracts there is some blood, which will flow back
into the atrium. It is this flow which pushes against the valvular flaps causing the valve
normal fetal development the tricuspid valve flaps are adhered to the septa (wall
separating atrium from ventricle). As the fetal development progresses under normal
circumstances the adhesive bonds holding the valve open will degenerate, allowing the
valve flaps to move into their proper position.
of tricuspid valve dysplasia are dependent upon the extent of the malformation, but some
of the most common symptoms are: fluid retention, cool extremities and exercise
intolerance (possibly followed by collapse).
valve dysplasia in dogs is usually congenital (present at birth). Due to the fact that
this condition (when it occurs) appears in several littermates, and tends to be more
prevalent in some family bloodlines than others - it is suspected that the tendency to
have this birth defect is hereditary. It is hoped that through screening of breeding stock
and their lineage (parents, grandparents, littermates, aunts, uncles, etc.) efforts can be
made to eliminate susceptible bloodlines from breeding programs.
two articles were generously supplied by BarkBytes.Com
and they reserve all copyright to these articles.
following are a few links with more information on other Cardiac Diseases:
Valve Defects a group of abnormalities of the mitral valve of the heart.