Does blood volume increase or decreases with cardiovascular disease?

In cardiovascular disease, blood volume can vary depending on the specific condition. In some cases, such as heart failure, blood volume may increase due to fluid retention as the body attempts to compensate for reduced cardiac output. Conversely, other cardiovascular conditions may lead to decreased blood volume due to factors like hemorrhage or inadequate fluid intake. Overall, the relationship between blood volume and cardiovascular disease is complex and influenced by multiple factors.