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.
The most common causes of heart failure are: 1  coronary artery disease and heart attack (which may be silent) 2  cardiomyopathy. 3  high blood pressure (hypertension)  heart valve 1  disease. congenital heart disease.  alcoholism and drug abuse.