What is a common result of congestive heart failure?

Congestive heart failure (CHF) is a condition in which the heart is unable to pump effectively, leading to a range of complications throughout the body. One of the hallmark features of CHF is fluid accumulation in the body, often referred to as edema. This occurs because the heart's reduced ability to move blood results in increased pressure in the blood vessels, which can cause fluid to leak into surrounding tissues. As a result, patients commonly experience swelling in various parts of the body, particularly in the legs, ankles, and abdomen, as well as fluid accumulation in the lungs, leading to symptoms such as shortness of breath.

The other choices do not correctly reflect common outcomes associated with CHF. Increased oxygen supply typically does not occur, as the heart's compromised function limits the effective distribution of oxygenated blood. Insufficient hormone production may occur in some contexts but is not a primary or direct result of congestive heart failure itself. Increased nerve impulse speed is not relevant in this context, as CHF affects cardiac output and fluid regulation rather than the speed of nerve impulses. Thus, fluid accumulation represents a direct and significant consequence of congestive heart failure.