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Electrocardiogram (ECG or EKG)
This test records the electrical activity of the heart over time produced by an electrocardiograph, usually in a noninvasive recording via skin electrodes.
This is a painless test that uses sound waves to create images of the heart. It provides the doctor with information about the size and shape of the heart and how well the heart’s chambers and valves are working.
This painless and noninvasive procedure involves placing a device called a transducer on your chest that sends ultrasound through your chest wall to your heart. As the ultrasound waves bounce off the structures of your heart, a computer in the echocardiography machine converts them into images on a screen.
This is a test where the transducer is attached to the end of a flexible tube that's guided down your throat and into your esophagus to get a more detailed image of your heart.
Three-Dimensional (3D) Real Time Echocardiography
This is an ultrasound of the heart that allows visualization its structure in a realistic fashion with instantaneous online reconstruction.
Cardiac CT is a painless test that uses a CT machine to clearly see detailed pictures of your heart. A special dye may be injected during the test to highlight the important structures in your heart. This test may help to identify blockages within your heart as well as structural abnormalities.
Cardiac MRI uses magnets and radio waves to produce a picture of your heart. The test provides a very accurate assessment of your heart’s structure and function. With the injection of contrast, information can be obtained about the major vessels that supply blood to your heart.
Cardioversion is a special test for people who have certain types of abnormal heartbeats. It helps to restore the heart to a normal rhythm. It's performed most often by using low energy electric shocks to your heart. This test is normally performed in the hospital under sedation.
Cardiac Stress Echo Test
An echocardiography test is where the patient exercises or takes medicine to make the heart pump harder and beat faster.
During this test, the patient either walks on a treadmill or is given an intravenous (IV) medication that simulates exercise while connected to an electrocardiogram. When using ECG and blood pressure monitoring alone the test is variously called a cardiac stress test, exercise stress test, exercise treadmill test, exercise tolerance test, stress test or exercise ECG test.
Nuclear Stress Testing
This test is used for some patients with abnormal resting ECGs or those who are unable to walk safely. The patient typically receives a medication which stimulates the heart. A nuclear isotope is injected, and after a waiting period, images are taken with a nuclear camera. They are then compared with the patient's resting images in order to assess the coronary arteries. When radioactive nuclides are used, it is called a nuclear stress test. Being able to visualize the relative amounts of radioisotope within the heart muscle makes nuclear stress tests more accurate in detecting regional areas of decreased blood flow.