Over the long run, however, the policies of the one-drop rule and segregation, in conjunction with other factors such as a long tradition of racial nationalism and white liberal support, generated a counter-reaction that led to a very different form of racial politics.
Learn about these ultrasound-like tests of the heart -- and find out what to expect -- here. Cardiac Catheterization. Cardiac catheterization -- also called a coronary angiogram -- means running a catheter into your heart. It's done to help doctors see what's going on in there, and whether they need to operate. Here's where to learn about it.
No matter what type of heart disease you have, your doctor will likely perform a physical exam and ask about your personal and family medical history before doing any tests. Besides blood tests and a chest X-ray, tests to diagnose heart disease can include:1  Electrocardiogram (ECG). 2  An ECG records these electrical signals and can help your doctor detect irregularities in your heart's rhythm and structure. This test is often used to check for heart problems. 2  In a cardiac CT scan, you lie on a table inside a doughnut-shaped machine. 3  An X-ray tube inside the machine rotates around your body and collects images of your heart and chest. 4  Cardiac magnetic resonance imaging (MRI).