['Abnormal heart  rhythms, or arrhythmias.', 'Aorta disease and Marfan syndrome.', 'Congenital heart disease.', 'Coronary artery disease (narrowing of the arteries)', 'Deep vein thrombosis and pulmonary embolism.', 'Heart attack.', 'Heart failure.', 'Heart muscle disease (cardiomyopathy)']