Here's some info:
"The ductus arteriosus is a blood vessel present in unborn animals
which runs from the pulmonary artery to the aorta allowing blood to
bypass the lungs. At birth, muscles in the ductus are stimulated to
contract, decreasing the size of the bypass and directing blood to
the newly inflated lungs. Over the first week of life, the ductus
normally closes completely.
In some kittens, the ductus arteriosis fails to close (patent ductus
arteriosis - PDA) due to the muscles which should contract to close
the ductus being abnormal. Some of the blood returning from the body
to the heart fails to pass through the lungs before returning to
circulation. Not only is the oxygen level in the blood reduced, but
the bypass causes increased pressure in the left side of the heart,
leading to dilation and eventually left sided heart failure.
PDA kittens may only show poor growth and poor tolerance to exercise
in the early stages. As left sided heart failure develops, coughing
and panting may become more pronounced.
The most prominent clinical finding is a heart murmur (rushing sound)
and possibly a vibration (thrill) which can be felt on the lower left
chest wall. These are due to the turbulence created by the blood
rushing through the PDA. Xray and untrasound (echocardiogram) are
used to confirm the diagnosis.
Recommended treatment is surgical closure of the PDA. This is
generally carried out between 2 and 4 months of age. Although there
is a small risk of death associated with the surgery, treated cats
have a good long term outlook compared to untreated cats."
- from VetLine, Australia
--- In feline-heart@y..., "Beth" <ba_ackerman@y...> wrote:
> Forgot a few things - What symptoms does your baby have? Is he
> lethargic? Sleep a lot? How is his appetite? Some cats with a
> can live a fairly normal life, depending on symptoms. There's a
> major risk with anesthesia, so I wouldn't have him neutered. Let
> know -
> Beth & her 12 furry loves
> I am new to this board (came on when I found about my little guy a
> month ago). It seems to focus mostly on Cardiomyopathy, but there
> are some really nice people here. I'll try to help in any way I
> --- In feline-heart@y..., "medgirl02" <blackyj@m...> wrote:
> > My 3 month old kitten has just been diagnosed with PDA. Due to
> > cost, correction will not be an option. Does anyone have any
> > experience with this disorder? Will I be able to have him
> > What is the avg life span? Any other info is appreciated.