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.
Vascular laboratory testing is used to diagnose: 1  Peripheral Arterial Disease (PAD): Blockages in the circulation to the arms or legs due to atherosclerosis or other disease which may threaten the limbs.  Cerebrovascular Disease: Blockages in the arteries to the brain that may increase risk of stroke.