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.
What EKG Results Reveal About Your Heart Health. Electrocardiogram (EKG) tests help doctors identify and diagnose present or past heart abnormalities. For those with a history of heart disease or anyone over 40, they are an important part of any doctor visit. Electrodes attached to strategic locations on the patientâs body measure the heartâs electrical impulses which are displayed on a computer monitor and then printed.