CHF gradually worsens over time. Overactive thyroid Abnormal heart rhythm Coronary Artery Disease Coronary artery disease is a buildup of cholesterol and fatty deposits in the blood vessels that supply the heart muscle with blood. As these arteries become clogged, less blood reaches the heart muscle. Some damage of the heart muscle can occur. When there is damage to large areas of the heart, it cannot pump all the blood that your body needs.
Heart failure can be the result.
High Blood Pressure Blood pressure is the force pushing blood through the blood vessels. When your blood pressure is high, your heart has to work harder. This causes the heart's muscle walls to thicken and some of the chambers may enlarge. These changes put extra strain on the heart, and the heart muscle eventually stretches and weakens. Abnormal Heart Valves Abnormal heart valves are those that do not open or close completely during each heartbeat.