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In page Cardiomegaly:

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  • Valve surgery: If an enlarged heart is caused by a problem with a heart valve, surgery can remove the valve and replace it with either an artificial valve or a tissue valve from a pig, cow or deceased human donor. If blood leaks backward through a valve (valve regurgitation), the leaky valve may be surgically repaired or replaced.[citation needed]
  • Coronary bypass surgery: to address coronary artery disease, which can lead to an enlarged heart.