Define omission. omission synonyms, omission pronunciation, omission translation, English dictionary definition of omission. n. 1. The act or an instance of omitting. 2. The state of having been omitted. 3. Something omitted or neglected. or n 1. something that has been omitted or...
Causes of heart disease. Heart disease occurs when plaque develops in the arteries and blood vessels that lead to the heart. This blocks important nutrients and oxygen from reaching your heart. Plaque is a waxy substance made up of cholesterol, fatty molecules, and minerals.
The main causes of heart valve disease are: 1  being born with an abnormal valve or valves (congenital heart disease) 2  having had rheumatic fever. 3  cardiomyopathy - a disease of the heart muscle.  damage to the heart muscle from a heart 1  attack. getting older.  a previous infection with endocarditis.