An enlarged heart (cardiomegaly) can have various causes. But it's usually caused by high blood pressure (hypertension) or coronary artery disease.
An enlarged heart may not pump blood effectively, resulting in congestive heart failure. Cardiomegaly may improve over time. But most people with an enlarged heart need lifelong treatment with medications.
Many experts believe that
Wolff-Parkinson-White syndrome may in some cases be
inherited. If you have a first degree relative, which is a parent, brother, or
sister, with this disorder and he or she has symptoms, talk with your doctor
about your risk of developing this abnormal heart rhythm.