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.
Having a heart attack is often a wake-up call to make over your habits, and even adopt new ones. The No. 1 habit you need to put on your to-do list: Exercise.
Your doctor has probably already mentioned it. And you know that exercise is good for your whole body and will make your heart (which is a muscle, after all) stronger.
There are other benefits, like lowering inflammation and helping your body better use insulin, which controls your blood sugar.
Having had a heart attack, you're going to...
The heart enlarges in response to damage to the heart muscle. Up to a point, enlargement permits the heart to continue to pump blood normally. As enlargement progresses, though, the heart's pumping ability declines.
Dilated cardiomyopathy is the main type of cardiomegaly. In dilated cardiomyopathy, the walls of both the left and right side of the heart (ventricles) become thin and stretched. The result is an enlarged heart.
In the other types of enlarged heart, the heart's muscular left ventricle becomes abnormally thick. High blood pressure usually causes left ventricular enlargement (hypertrophy), while hypertrophic cardiomyopathy is an inherited condition.
Generally speaking, the heart's pumping ability is better preserved when the enlarged heart is "thick" rather than "thin."
Causes of an Enlarged Heart
The most common causes of an enlarged heart are blockages in the heart's blood supply (coronary artery disease) and high blood pressure. An enlarged heart can have many other causes, including:
Symptoms vary widely in people with an enlarged heart. Some may never have symptoms. Others may have mild symptoms that remain unchanged for years. And some may experience steadily worsening shortness of breath.