by Karl Loren
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Every year, doctors perform approximately 1.5 million angiograms in this country. Though this invasive test is classified as a diagnostic procedure, that is not how most cardiologists use it. Instead, it is invariably the gateway to heart surgery. If your physician tells you that you need an angiogram, I urge you to get a second opinion before consenting to this procedure. Why? Because, according to studies, as many as eighty percent of all angiograms are unnecessary. Echocardiogram: Seeing With Sound However, for the patient with suspected heart disease, there is simply no excuse not to perform this safe and noninvasive test of heart function. An echocardiogram directs sound waves at your heart from a transducer held on your chest. Various structures in the heart reflect the sound waves, which are then processed electronically to provide video images of your heart in motion. The echocardiogram provides important information about the size, shape, and movement of the heart. Enlargement of the heart (cardiomyopathy), valve abnormalities, and aneurysms can be detected through an echocardiogram. Most important, your ejection fraction -- a measure of your heart's strength and efficiency -- can be determined accurately with none of the risks or side effects of angiography. Exercise Stress Test: Performance Under Pressure For this, the exercise stress test is invaluable. Like the echocardiogram, the exercise stress test is noninvasive and simple to perform. You walk on a treadmill (or pedal a stationary bicycle) while an EKG machine records the electrical activity of your heart. Walking begins at a low rate of exertion, which increases as both the speed and slope of the treadmill are increased. The test continues until (1) your pulse reaches a certain rate, (2) certain changes in your EKG occur, or (3) you are too tired to continue, have chest pain, or are short of breath. The exercise stress test is useful to uncover problems with heart rhythm or blood supply to your heart that cannot be found on an EKG taken at rest. It is also useful before beginning an exercise program in order to develop a personalized plan that will allow you to exercise safely and derive maximum benefit from your efforts. |
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