Generally, the condition progresses slowly over the course of several years so that patients may remain asymptomatic long after
development of a heart murmur.
The first signal that a dog might have Mitral Valve Disease is
the development of a heart murmur.
As this disease progresses, the click usually becomes inaudible due to
the development of a heart murmur caused by leakage of blood through the degenerative valve.
In adult dogs and cats,
the development of a heart murmur typically indicates leaky heart valves.
Not exact matches
These changes in the
heart can lead to leakage at the valves and
development of a
murmur.
The high levels
of thyroid hormones can cause the
development of heart disease, and these patients may have a
heart murmur, difficulty breathing, high
heart rate and arrhythmias.
Congenital
murmurs exist from birth (although they may not be observed until later) and are evidence
of a
heart defect that occurred during
development.