Edema phenomenon

Particularly in cases of heart problems, swelling in the lower limbs is a classic indication that the heart is not pumping blood effectively. Heart-related illnesses cause the heart muscle to lose its ability to contract and evacuate blood to other organs while simultaneously reducing the muscle's capacity to draw blood back to the heart. Blood in the peripheral venous system will be sluggish during this time, allowing fluid to leak into neighboring tissues and create edema, especially in the lower extremities.

Additionally, because there is less blood flowing to the kidneys, less urine is being filtered out, which results in water retention and worsening of the edema. Edema frequently affects the lower extremities, such as the feet, ankles, and legs, but it can occasionally affect other organs as well. However, edema can happen together with cardiac disease and may be brought on by renal illness, liver failure, a high salt diet, hypovolemia, or a drug side effect.