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.
Arterial anastomoses provides alternate pathways (collateral channels or collateral circulation) for blood to reach a given body region. If one arterial branch is blocked or cut, the collateral channel can often provide the region with an adequate blood supply and thereby, minimizing the damage at tissue level.rterial anastomoses are abundant in abdominal organs and around joints where active body movements may hinder blood flow through one channel. Arteries that do not anastomose, or have a poorly developed collateral circulation are known as end arteries. These end arteries supply the retina, kidneys, and spleen.
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.