Congestion of the lungs and fluid accumulation are common. Fluid can also build up in the abdomen and around the lungs, if the right side of the heart is also involved. Congestion and fluid buildup indicate heart failure. Dogs with DCM-induced heart failure often have left-sided congestive failure.
Medical Definition of COLLATERAL CIRCULATION. : circulation of blood established through enlargement of minor vessels and anastomosis of vessels with those of adjacent parts when a major vein or artery is functionally impaired (as by obstruction); also: the modified vessels through which such circulation occurs.edical Definition of COLLATERAL CIRCULATION. : circulation of blood established through enlargement of minor vessels and anastomosis of vessels with those of adjacent parts when a major vein or artery is functionally impaired (as by obstruction); also: the modified vessels through which such circulation occurs.
Spider veins are examples of collateral veins. There are collateral arteries as well. When a part of the body is not receiving enough oxygen new arteries will grow around to assisst in circulation.Like veins these are of poor structural quality too.hese extra vessels are called collateral blood vessels. For example, there is a major collateral vessel in the thigh. This is used by cardiologists to perform a heart bypass when the heart's own vessels are blocked.