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.
Common causes of abnormal heart rhythms (arrhythmias) or conditions that can lead to arrhythmias include: 1  Heart defects you're born with (congenital heart defects). 2  Coronary artery disease. 3  High blood pressure. 4  Diabetes. 5  Smoking.6  Excessive use of alcohol or caffeine. 7  Drug abuse. 8  Stress.eart infections, such as pericarditis, endocarditis and myocarditis, are caused when an irritant, such as a bacterium, virus or chemical, reaches your heart muscle. The most common causes of heart infections include: 1  Bacteria. 2  Viruses. 3  Parasites.