Katrina Flanagan
Posted : 5/6/2006 8:14:00 PM
I have never had to face a heart murmur in my dogs (although I wonder daily what will be next) I have just seen a lot of medical problems in animals, especially with the heart. I also have a close friend going through this right now.
Murmurs can happen in various areas of the heart which is why I attached the diagram. They can happen in the SA-AV node, the interventricular septum, even in the semi-lunar valves from defaulty chordae tendinae's. Lost yet? That is why I asked for clarification as to where it was.
Depending on where you go your vet probably diagnosed this and wrote a number in your file. It would be on a scale from 1/6-6/6. If they follow this, see if you can find out the number. That might help a bit. I am not a vet though so I would recommend talking to your's or another to find out how serious it is.
You have on your hands what is called a "Congenital ventricular septal defect". It is the #1 congenital defect in dogs so it is rare that a veterinarian does not have experience with this. Basically what is happening is that the blood between the right and left ventricles are mixing instead of going in the proper orders as per the diagram I attached. This means that instead of the blood going out the pulmonary veins and the aorta to get oxygenated in the lungs they are mixing and possibly not getting oxygenated or not going where it is supposed to. As far as what is happening to the blood instead of what it should be doing and how serious it is, only a vet can answer that for you. I can only give info on what "typically" happens although every case is different. Hope this clarifies some things for you to help you along this difficult road to come.