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 , Internal Medicine, answered. There are a number of options to test for coronary artery blockages. The gold standard is coronary angiography. But since it is invasive, requiring that a catheter be inserted into the heart, imaging tests are often used first to see if a coronary angiogram is needed. The most common imaging tests are the nuclear stress test and the stress echocardiogram.