Edema in cardiac disease is called cardiogenic edema, and can be generalized or localized, usually starting in the drooping area.
When the right heart failure, the right ventricle blood into the pulmonary circulation is more difficult, the right ventricle pressure increases, the right atrium blood can not enter the right ventricle, resulting in increased central venous pressure, venous blood back to the heart resistance increases, then the venous pressure will rise and lead to venous blood in the peripheral tissues deposition, which is manifested in the lower extremity edema, there may also be liver bruising, gastrointestinal tract hemorrhage and so on.
To sum up, edema can occur in heart disease, then we must pay attention to it, timely medical treatment, in the hospital for systematic treatment.