• Echocardiogram. This is one of the most common methods to diagnose an enlarged heart. A moving image of the patient’s beating heart is played on a screen, where a physician can study the heart’s thickness, size and function. The image also shows the motion pattern and structure of the four heart valves, revealing any potential leakage (regurgitation) or narrowing (stenosis). During this test, a Doppler ultrasound may also be done to evaluate blood flow across the valves.

    Echocardiogram


  • Chest x-ray. Radiation-based imaging that offers the physician a picture of the general size, shape and structure of the heart and lungs. An enlarged heart may be detected on an x-ray that is being conducted for an unrelated condition.

  • Stress test. An electrocardiogram (EKG) is performed while the patient exercises in a controlled manner on a treadmill or stationary bicycle at varied speeds and elevations. The reaction of the heart under exertion can be measured and evaluated, and any weaknesses in pumping action and/or muscle performance will be revealed.