Complications

Complications from dilated cardiomyopathy include:

• Heart failure. If you have dilated cardiomyopathy, your heart might not be able to supply your body with the blood it needs to work properly, leading to heart failure. Fluid can build up in the lungs, abdomen, legs, ankles and feet.
• Heart valve regurgitation. Enlargement of the left ventricle may make it harder for your heart valves to close, causing a backward flow of blood and making your heart pump less effectively.
• Heart rhythm problems. Changes in your heart's structure and changes in pressure on your heart's chambers can lead to the development of abnormal heart rhythms (arrhythmias).
• Sudden cardiac arrest. Dilated cardiomyopathy can cause your heart to suddenly stop beating.
• Blood clots (emboli). Pooling of blood in the left ventricle can lead to blood clots, which may enter the bloodstream and cut off the blood supply to vital organs. These blood clots can cause stroke, heart attack or damage to other organs. Arrhythmias can also cause blood clots.