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.
A stress test can determine if you have heart disease. A doctor or trained technician performs the test. Heâll learn how much your heart can manage before an abnormal rhythm starts or blood flow to your heart muscle drops. There are different types of these. The exercise stress test -- also known as an exercise electrocardiogram, treadmill test, graded exercise test, or stress EKG -- is used most often. It lets your doctor know how your heart responds to being pushed. Youâll walk on a treadmill or pedal a stationary bike. Itâll get more difficult as you go.