1. Catheterization has evolved over thousands of years from early bladder catheterizations in ancient Egypt to modern cardiac catheterization techniques.
2. Key developments included the first intravenous injections in animals in the 1600s, the first cardiac catheterization using a horse in 1711, and measuring intracardiac pressures in dogs in 1847.
3. The 20th century saw major advances like the first human cardiac catheterization in 1929, development of angiography using contrast agents in the 1910s-1920s, and the Nobel prize-winning work of Cournand, Richards, and Forssmann in catheterizing the right heart in the 1940s-1950s.