Medical Definition of Immunoglobulin E. Immunoglobulin E: A class of immunoglobulins that includes the antibodies that are important in an allergic response. Abbreviated IgE. A person who has an allergy often has elevated blood levels of IgE. IgE antibodies attack and engage the invading army of allergens.
Liver failure occurs when large parts of the liver become damaged beyond repair and the liver is no longer able to function. Liver failure is a life-threatening condition that demands urgent medical care. Most often, liver failure occurs gradually and over many years.
Anything that weakens the heart's ability to fill with blood or pump blood can lead to heart failure. The three most common causes are diseased arteries in the heart (coronary artery disease, or CAD), high blood pressure, and dilated cardiomyopathy (diseased or enlarged heart muscle). Nearly any form of heart disease can lead to heart failure. Other causes include the following: